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        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>3514623.68000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>5865.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
          <custodian>
            <custodianName>BofA Securities, Inc.</custodianName>
            <custodianLei>549300HN4UKV1E2R3U73</custodianLei>
            <custodianStateCountry custodianState="US-NY" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
            <principalFileNo>8-69787</principalFileNo>
            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>125250245.63000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BNY Mellon Capital Markets, LLC</principalName>
            <principalFileNo>8-35255</principalFileNo>
            <principalCrdNo>000017454</principalCrdNo>
            <principalLei>VJW2DOOHGDT6PR0ZRO63</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>170736291.06000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Deutsche Bank Securities Inc.</principalName>
            <principalFileNo>8-17822</principalFileNo>
            <principalCrdNo>000002525</principalCrdNo>
            <principalLei>9J6MBOOO7BECTDTUZW19</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>185782847.27000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Natwest Markets Securities Inc.</principalName>
            <principalFileNo>8-37135</principalFileNo>
            <principalCrdNo>000011707</principalCrdNo>
            <principalLei>ZE2ZWJ5BTIQJ8M0C6K34</principalLei>
            <principalStateCountry principalState="US-CT" principalCountry="US"/>
            <principalTotalPurchaseSale>136781322.50000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
            <principalFileNo>8-8177</principalFileNo>
            <principalCrdNo>000007059</principalCrdNo>
            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>170643433.08000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
            <principalFileNo>8-41342</principalFileNo>
            <principalCrdNo>000019714</principalCrdNo>
            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>591828713.92000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
            <principalFileNo>8-15869</principalFileNo>
            <principalCrdNo>000008209</principalCrdNo>
            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>320644560.30000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
            <principalFileNo>N/A</principalFileNo>
            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>1054900000.00000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Wells Fargo Securities, LLC</principalName>
            <principalFileNo>8-65876</principalFileNo>
            <principalCrdNo>000126292</principalCrdNo>
            <principalLei>VYVVCKR63DVZZN70PB21</principalLei>
            <principalStateCountry principalState="US-NC" principalCountry="US"/>
            <principalTotalPurchaseSale>240098856.66000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
            <principalFileNo>8-35008</principalFileNo>
            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>545138815.51000000</principalTotalPurchaseSale>
          </principalTransaction>
        </principalTransactions>
        <principalAggregatePurchase>4233555835.94000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>790103887.49846153</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares 1-5 Year Investment Grade Corporate Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000013697</mgmtInvSeriesId>
        <mgmtInvLei>549300T14S5IX7V5T008</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares 1-5 Year Investment Grade Corporate Bond ETF" sharesOutstandingClassId="C000037539" sharesOutstandingTickerSymbol="IGSB"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>0.01000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.05000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.31000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.31000000</indexFundReturnDailyStdevAfterExpense>
          </indexFundInfo>
          <masterFeederFundInfo fundType="Master-Feeder Fund">
            <feederFunds feederFundName="iShares 1-5 Year U.S. IG Corporate Bond Index ETF (CAD-Hedged)" regFeederFundFileNo="N/A" regFeederFundSeriesIdNo="N/A" regFeederFundLei="N/A" unregFeederFileNo="N/A" unregFeederFundLei="549300C2OIXPIGE0WM76"/>
            <feederFunds feederFundName="iShares 1-5 Year U.S. IG Corporate Bond Index ETF" regFeederFundFileNo="N/A" regFeederFundSeriesIdNo="N/A" regFeederFundLei="N/A" unregFeederFileNo="N/A" unregFeederFundLei="549300L3FWVGXNDQQB47"/>
          </masterFeederFundInfo>
        </fundTypes>
        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>1105395775.16000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>1941340.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
          <custodian>
            <custodianName>SG Americas Securities, LLC</custodianName>
            <custodianLei>549300F35UE0BOM1WJ55</custodianLei>
            <custodianStateCountry custodianState="US-NY" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
          <custodian>
            <custodianName>Euroclear Bank</custodianName>
            <custodianLei>549300OZ46BRLZ8Y6F65</custodianLei>
            <custodianCountry>BE</custodianCountry>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7)</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>National Securities Clearing Corporation</principalName>
            <principalFileNo>8-164</principalFileNo>
            <principalCrdNo>000007569</principalCrdNo>
            <principalLei>549300RYC9NELN2ICA34</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>5836877545.55000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>RBC Capital Markets, LLC</principalName>
            <principalFileNo>8-45411</principalFileNo>
            <principalCrdNo>000031194</principalCrdNo>
            <principalLei>549300LCO2FLSSVFFR64</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>468019950.62000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
            <principalFileNo>8-8177</principalFileNo>
            <principalCrdNo>000007059</principalCrdNo>
            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>1773359751.84000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
            <principalFileNo>8-41342</principalFileNo>
            <principalCrdNo>000019714</principalCrdNo>
            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>2254301010.45000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Pershing LLC</principalName>
            <principalFileNo>8-17574</principalFileNo>
            <principalCrdNo>000007560</principalCrdNo>
            <principalLei>ZI8Q1A8EI8LQFJNM0D94</principalLei>
            <principalStateCountry principalState="US-NJ" principalCountry="US"/>
            <principalTotalPurchaseSale>1025575662.68000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
            <principalFileNo>N/A</principalFileNo>
            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>6662540000.00000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
            <principalFileNo>8-129</principalFileNo>
            <principalCrdNo>000000361</principalCrdNo>
            <principalLei>FOR8UP27PHTHYVLBNG30</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>2847783356.75000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
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            <principalCrdNo>000008209</principalCrdNo>
            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>965538167.80000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
            <principalFileNo>8-35008</principalFileNo>
            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>5334213229.57000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
            <principalFileNo>8-69787</principalFileNo>
            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>5779404520.05000000</principalTotalPurchaseSale>
          </principalTransaction>
        </principalTransactions>
        <principalAggregatePurchase>37035562609.90000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>24322117637.27846153</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares 10-20 Year Treasury Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000013696</mgmtInvSeriesId>
        <mgmtInvLei>549300MH5J7BUV0VS287</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares 10-20 Year Treasury Bond ETF" sharesOutstandingClassId="C000037538" sharesOutstandingTickerSymbol="TLH"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>-0.89000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-1.04000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>2.12000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>2.12000000</indexFundReturnDailyStdevAfterExpense>
          </indexFundInfo>
        </fundTypes>
        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>51552583.04000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>33732.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
          <custodian>
            <custodianName>Wells Fargo Securities, LLC</custodianName>
            <custodianLei>VYVVCKR63DVZZN70PB21</custodianLei>
            <custodianStateCountry custodianState="US-NC" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
            <principalFileNo>8-129</principalFileNo>
            <principalCrdNo>000000361</principalCrdNo>
            <principalLei>FOR8UP27PHTHYVLBNG30</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>748764806.99000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Natwest Markets Securities Inc.</principalName>
            <principalFileNo>8-37135</principalFileNo>
            <principalCrdNo>000011707</principalCrdNo>
            <principalLei>ZE2ZWJ5BTIQJ8M0C6K34</principalLei>
            <principalStateCountry principalState="US-CT" principalCountry="US"/>
            <principalTotalPurchaseSale>148411980.06000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
            <principalFileNo>N/A</principalFileNo>
            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>475527000.00000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
            <principalFileNo>8-8177</principalFileNo>
            <principalCrdNo>000007059</principalCrdNo>
            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>227212102.18000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
            <principalFileNo>8-69787</principalFileNo>
            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>1071147607.75000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Wells Fargo Securities, LLC</principalName>
            <principalFileNo>8-65876</principalFileNo>
            <principalCrdNo>000126292</principalCrdNo>
            <principalLei>VYVVCKR63DVZZN70PB21</principalLei>
            <principalStateCountry principalState="US-NC" principalCountry="US"/>
            <principalTotalPurchaseSale>306556256.29000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
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            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
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          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
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            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>138752364.29000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>BNY Mellon Capital Markets, LLC</principalName>
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            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>382046601.79000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
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        <principalAggregatePurchase>5947524268.15000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>1434642025.44384615</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares Intermediate Government/Credit Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000013700</mgmtInvSeriesId>
        <mgmtInvLei>549300USOBX01WS0GK74</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares Intermediate Government/Credit Bond ETF" sharesOutstandingClassId="C000037542" sharesOutstandingTickerSymbol="GVI"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
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            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>0.05000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.15000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.59000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.59000000</indexFundReturnDailyStdevAfterExpense>
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        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
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        <securityLendings>
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            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
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                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
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        <collateralManagers>
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        <paymentToAgentManagers>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>83154594.78000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>107000.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-6 (17 CFR 270.17a-6)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
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        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
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            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
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            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
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        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
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          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
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          <principalTransaction>
            <principalName>Commerz Markets LLC</principalName>
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          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
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          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
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          <principalTransaction>
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        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>2458869045.88153846</mnthlyAvgNetAssets>
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      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares BBB Rated Corporate Bond ETF</mgmtInvFundName>
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            <indexFundReturnDiffAfterExpense>0.09000000</indexFundReturnDiffAfterExpense>
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            <indexFundReturnDailyStdevAfterExpense>0.87000000</indexFundReturnDailyStdevAfterExpense>
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        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
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          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
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        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
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                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
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          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
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          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
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        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
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        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
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          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
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          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
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          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
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          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
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            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
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        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
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          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
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        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
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          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
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          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
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            <principalName>MarketAxess Corporation</principalName>
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          <principalTransaction>
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      <managementInvestmentQuestion>
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          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
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        <avgPortfolioSecuritiesValue>N/A</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>N/A</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
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          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
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        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
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        <pricingServices>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
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          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
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          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
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          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
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            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
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            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>BlackRock Liquidity Funds - MuniCash</principalName>
            <principalFileNo>N/A</principalFileNo>
            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>549300RWBJ885673DL84</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>3819854791.26000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Hilltop Securities Inc.</principalName>
            <principalFileNo>8-45123</principalFileNo>
            <principalCrdNo>000006220</principalCrdNo>
            <principalLei>549300IXU82PMU6XZT45</principalLei>
            <principalStateCountry principalState="US-TX" principalCountry="US"/>
            <principalTotalPurchaseSale>83084900.95000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
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            <principalCrdNo>000019714</principalCrdNo>
            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>256062794.50000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
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            <principalCrdNo>000007059</principalCrdNo>
            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>247804579.05000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>National Financial Services LLC</principalName>
            <principalFileNo>8-26740</principalFileNo>
            <principalCrdNo>000013041</principalCrdNo>
            <principalLei>549300JRHF1MHHWUAW04</principalLei>
            <principalStateCountry principalState="US-MA" principalCountry="US"/>
            <principalTotalPurchaseSale>83468680.25000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
            <principalFileNo>8-69787</principalFileNo>
            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>1701395908.20000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
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            <principalCrdNo>000008209</principalCrdNo>
            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>1499142573.75000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Ice Securities Execution &amp; Clearing, LLC</principalName>
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            <principalCrdNo>000299634</principalCrdNo>
            <principalLei>549300Q54HHOIVWCEN57</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>67802651.70000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
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            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>577785246.55000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Wells Fargo Securities, LLC</principalName>
            <principalFileNo>8-65876</principalFileNo>
            <principalCrdNo>000126292</principalCrdNo>
            <principalLei>VYVVCKR63DVZZN70PB21</principalLei>
            <principalStateCountry principalState="US-NC" principalCountry="US"/>
            <principalTotalPurchaseSale>180199669.90000000</principalTotalPurchaseSale>
          </principalTransaction>
        </principalTransactions>
        <principalAggregatePurchase>8645076937.51000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>5774107198.04615384</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares 1-3 Year Treasury Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000004357</mgmtInvSeriesId>
        <mgmtInvLei>549300W0WX9TL4G6HM56</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares 1-3 Year Treasury Bond ETF" sharesOutstandingClassId="C000012087" sharesOutstandingTickerSymbol="SHY"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>0.01000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.14000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.23000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.23000000</indexFundReturnDailyStdevAfterExpense>
          </indexFundInfo>
        </fundTypes>
        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>992283402.83000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>1307313.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>SG Americas Securities, LLC</custodianName>
            <custodianLei>549300F35UE0BOM1WJ55</custodianLei>
            <custodianStateCountry custodianState="US-NY" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
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          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
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          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
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            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
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        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
            <principalFileNo>N/A</principalFileNo>
            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>18209058000.00000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
            <principalFileNo>8-41342</principalFileNo>
            <principalCrdNo>000019714</principalCrdNo>
            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
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          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
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            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
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            <principalTotalPurchaseSale>5727713608.74000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Daiwa Capital Markets America Inc.</principalName>
            <principalFileNo>8-12242</principalFileNo>
            <principalCrdNo>000001576</principalCrdNo>
            <principalLei>M67H5PRC0NQKM73ZAS82</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>3279842843.24000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
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            <principalCrdNo>000007059</principalCrdNo>
            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>8602271462.72000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Natwest Markets Securities Inc.</principalName>
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            <principalCrdNo>000011707</principalCrdNo>
            <principalLei>ZE2ZWJ5BTIQJ8M0C6K34</principalLei>
            <principalStateCountry principalState="US-CT" principalCountry="US"/>
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          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
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            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>9840739474.60000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>BNY Mellon Capital Markets, LLC</principalName>
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            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>3710064482.26000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>HSBC Securities (USA) Inc.</principalName>
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            <principalCrdNo>000019585</principalCrdNo>
            <principalLei>CYYGQCGNHMHPSMRL3R97</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>2340658969.15000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Wells Fargo Securities, LLC</principalName>
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            <principalCrdNo>000126292</principalCrdNo>
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            <principalStateCountry principalState="US-NC" principalCountry="US"/>
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        <principalAggregatePurchase>92370536052.95000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>19966708324.61076923</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares 20+ Year Treasury Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000004360</mgmtInvSeriesId>
        <mgmtInvLei>549300WWURKS1JGBZU59</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares 20+ Year Treasury Bond ETF" sharesOutstandingClassId="C000012090" sharesOutstandingTickerSymbol="TLT"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>-1.22000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-1.37000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>2.78000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>2.78000000</indexFundReturnDailyStdevAfterExpense>
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        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
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        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>370342287.99000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>486321.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>Wells Fargo Securities, LLC</custodianName>
            <custodianLei>VYVVCKR63DVZZN70PB21</custodianLei>
            <custodianStateCountry custodianState="US-NC" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
            <principalFileNo>8-8177</principalFileNo>
            <principalCrdNo>000007059</principalCrdNo>
            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>3029494236.98000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
            <principalFileNo>8-35008</principalFileNo>
            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>14544937204.47000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
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            <principalCrdNo>000019714</principalCrdNo>
            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>4036109515.81000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
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            <principalCrdNo>000008209</principalCrdNo>
            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>3473720726.58000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BNP Paribas Securities Corp.</principalName>
            <principalFileNo>8-32682</principalFileNo>
            <principalCrdNo>000015794</principalCrdNo>
            <principalLei>RCNB6OTYUAMMP879YW96</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>1515723059.67000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>SG Americas Securities, LLC</principalName>
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            <principalCrdNo>000128351</principalCrdNo>
            <principalLei>549300F35UE0BOM1WJ55</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>4365193678.66000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
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            <principalCrdNo>000000361</principalCrdNo>
            <principalLei>FOR8UP27PHTHYVLBNG30</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>3580556002.87000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
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            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>38961477109.81000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Deutsche Bank Securities Inc.</principalName>
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            <principalCrdNo>000002525</principalCrdNo>
            <principalLei>9J6MBOOO7BECTDTUZW19</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>4544193619.11000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
            <principalFileNo>N/A</principalFileNo>
            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>2088368000.00000000</principalTotalPurchaseSale>
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        <principalAggregatePurchase>82319778777.27000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>15569330450.58538461</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares ESG Advanced Investment Grade Corporate Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000074168</mgmtInvSeriesId>
        <mgmtInvLei>5493009S7WQUPRT4T556</mgmtInvLei>
        <isFirstFilingByFund>Y</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares ESG Advanced Investment Grade Corporate Bond ETF" sharesOutstandingClassId="C000231752" sharesOutstandingTickerSymbol="ELQD"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>0.22000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>0.03000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.95000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.95000000</indexFundReturnDailyStdevAfterExpense>
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        <isNonDiversifiedCompany>Y</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>69161.27000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>38.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
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        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
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            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
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        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>RBC Capital Markets, LLC</principalName>
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            <principalCrdNo>000031194</principalCrdNo>
            <principalLei>549300LCO2FLSSVFFR64</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>500692.05000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
            <principalFileNo>8-15869</principalFileNo>
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            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>2484513.00000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
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            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
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          <principalTransaction>
            <principalName>National Financial Services LLC</principalName>
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            <principalLei>549300JRHF1MHHWUAW04</principalLei>
            <principalStateCountry principalState="US-MA" principalCountry="US"/>
            <principalTotalPurchaseSale>680823.00000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Deutsche Bank Securities Inc.</principalName>
            <principalFileNo>8-17822</principalFileNo>
            <principalCrdNo>000002525</principalCrdNo>
            <principalLei>9J6MBOOO7BECTDTUZW19</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>2089034.75000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
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            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>880000.00000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
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            <principalStateCountry principalState="US-NY" principalCountry="US"/>
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          <principalTransaction>
            <principalName>Pershing LLC</principalName>
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            <principalLei>ZI8Q1A8EI8LQFJNM0D94</principalLei>
            <principalStateCountry principalState="US-NJ" principalCountry="US"/>
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          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
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            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>3661622.70000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
            <principalFileNo>8-8177</principalFileNo>
            <principalCrdNo>000007059</principalCrdNo>
            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>1253876.20000000</principalTotalPurchaseSale>
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        </principalTransactions>
        <principalAggregatePurchase>23148212.40000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>19306441.06500000</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares iBoxx $ Investment Grade Corporate Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000004361</mgmtInvSeriesId>
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        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares iBoxx $ Investment Grade Corporate Bond ETF" sharesOutstandingClassId="C000012091" sharesOutstandingTickerSymbol="LQD"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>-0.37000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.51000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>1.06000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>1.06000000</indexFundReturnDailyStdevAfterExpense>
          </indexFundInfo>
          <masterFeederFundInfo fundType="Master-Feeder Fund">
            <feederFunds feederFundName="iShares U.S. IG Corporate Bond Index ETF (CAD-Hedged)" regFeederFundFileNo="N/A" regFeederFundSeriesIdNo="N/A" regFeederFundLei="N/A" unregFeederFileNo="N/A" unregFeederFundLei="GTOHDQTL64Z202HQYF91"/>
            <feederFunds feederFundName="iShares USD Investment Grade Corporate Bond JPY Hedged ETF" regFeederFundFileNo="N/A" regFeederFundSeriesIdNo="N/A" regFeederFundLei="N/A" unregFeederFileNo="N/A" unregFeederFundLei="3538009W6RXDDKB43Y23"/>
            <feederFunds feederFundName="iShares U.S. IG Corporate Bond Index ETF" regFeederFundFileNo="N/A" regFeederFundSeriesIdNo="N/A" regFeederFundLei="N/A" unregFeederFileNo="N/A" unregFeederFundLei="549300D6X6BFDA8J5E77"/>
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        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
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        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
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            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
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        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
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        <paymentToAgentManagers>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
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        <netIncomeSecuritiesLending>3801364.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
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          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
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            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
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            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
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            <pricingServiceCountry>GB</pricingServiceCountry>
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          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
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            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
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          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
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            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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        </pricingServices>
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        <custodians>
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          <custodian>
            <custodianName>Wells Fargo Securities, LLC</custodianName>
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            <isCustodianAffiliated>N</isCustodianAffiliated>
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            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
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        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
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          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
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        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
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          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
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        <aggregateCommission>0.00000000</aggregateCommission>
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          <principalTransaction>
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            <principalName>Deutsche Bank Securities Inc.</principalName>
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          <principalTransaction>
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          <principalTransaction>
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        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
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      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares California Muni Bond ETF</mgmtInvFundName>
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          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
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            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
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          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
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            <adminName>State Street Bank and Trust Company</adminName>
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        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
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          <brokerDealer>
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            <principalName>Citigroup Global Markets Inc.</principalName>
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            <principalLei>ZI8Q1A8EI8LQFJNM0D94</principalLei>
            <principalStateCountry principalState="US-NJ" principalCountry="US"/>
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          </principalTransaction>
          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
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          </principalTransaction>
          <principalTransaction>
            <principalName>Jefferies LLC</principalName>
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          </principalTransaction>
          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
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          </principalTransaction>
          <principalTransaction>
            <principalName>Jane Street Capital, LLC</principalName>
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            <principalTotalPurchaseSale>13577818.68000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BlackRock Liquidity Funds - California Money Fund</principalName>
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            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>549300E5GIHTAGOVRB65</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
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          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
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        <principalAggregatePurchase>1176540258.95000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>1846111316.96769230</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares Core 5-10 Year USD Bond ETF</mgmtInvFundName>
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        <mgmtInvLei>549300E5GUSCE00FIQ17</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares Core 5-10 Year USD Bond ETF" sharesOutstandingClassId="C000174365" sharesOutstandingTickerSymbol="IMTB"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>-0.11000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.16000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.59000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.59000000</indexFundReturnDailyStdevAfterExpense>
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        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>2158628.26000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>3902.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-6 (17 CFR 270.17a-6)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>Y</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>Y</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
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            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
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            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
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            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>J.P. Morgan Securities LLC</custodianName>
            <custodianLei>ZBUT11V806EZRVTWT807</custodianLei>
            <custodianStateCountry custodianState="US-NY" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
          <custodian>
            <custodianName>Euroclear Bank</custodianName>
            <custodianLei>549300OZ46BRLZ8Y6F65</custodianLei>
            <custodianCountry>BE</custodianCountry>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7)</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
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            <isAdminSubAdmin>N</isAdminSubAdmin>
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        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
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            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
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            <brokerDealerCommission>0.00000000</brokerDealerCommission>
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          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
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            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
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        <brokers>
          <broker>
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          <broker>
            <brokerName>Pershing LLC</brokerName>
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            <grossCommission>2.06000000</grossCommission>
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          <broker>
            <brokerName>Raymond James &amp; Associates, Inc.</brokerName>
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            <grossCommission>1.19000000</grossCommission>
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          <broker>
            <brokerName>National Financial Services LLC</brokerName>
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            <brokerLei>549300JRHF1MHHWUAW04</brokerLei>
            <brokerStateCountry brokerState="US-MA" brokerCountry="US"/>
            <grossCommission>0.18000000</grossCommission>
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          <broker>
            <brokerName>Wells Fargo Securities, LLC</brokerName>
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            <brokerStateCountry brokerState="US-NC" brokerCountry="US"/>
            <grossCommission>0.24000000</grossCommission>
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        <aggregateCommission>4.61000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
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          <principalTransaction>
            <principalName>Nomura Securities International, Inc.</principalName>
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            <principalLei>OXTKY6Q8X53C9ILVV871</principalLei>
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            <principalTotalPurchaseSale>30095880.68000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Credit Suisse Securities (USA) LLC</principalName>
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          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
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            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
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          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
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          <principalTransaction>
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          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
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          <principalTransaction>
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          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
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            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
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            <principalTotalPurchaseSale>95219738.45000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Institutional</principalName>
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            <principalCrdNo>N/A</principalCrdNo>
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        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>126470223.86846153</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares ESG Advanced Total USD Bond Market ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000068817</mgmtInvSeriesId>
        <mgmtInvLei>5493003MW3304SOSOX56</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
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        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
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        <fundTypes>
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          <indexFundInfo fundType="Index Fund">
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            <indexFundReturnDiffAfterExpense>-0.16000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.70000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.70000000</indexFundReturnDailyStdevAfterExpense>
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        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
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        <securityLendings>
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            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
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                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
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              <didIndemnificationRights>N</didIndemnificationRights>
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        <collateralManagers>
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        <paymentToAgentManagers>
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          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
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        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>6352805.03000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>11264.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-6 (17 CFR 270.17a-6)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>Y</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>Y</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
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            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>Euroclear Bank</custodianName>
            <custodianLei>549300OZ46BRLZ8Y6F65</custodianLei>
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            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7)</custodyType>
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          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
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            <isCustodianAffiliated>N</isCustodianAffiliated>
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            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
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          <custodian>
            <custodianName>Wells Fargo Securities, LLC</custodianName>
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            <isCustodianAffiliated>N</isCustodianAffiliated>
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            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
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        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
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            <adminName>State Street Bank and Trust Company</adminName>
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        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
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          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
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        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Institutional</principalName>
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            <principalLei>549300JDHS1T46VWOG19</principalLei>
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          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
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            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
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          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
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          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
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          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
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          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
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          <principalTransaction>
            <principalName>Nomura Securities International, Inc.</principalName>
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          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
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            <principalLei>AC28XWWI3WIBK2824319</principalLei>
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          <principalTransaction>
            <principalName>Credit Suisse Securities (USA) LLC</principalName>
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          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
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        <principalAggregatePurchase>2934312507.07000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>426920161.21461538</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares Core U.S. Aggregate Bond ETF</mgmtInvFundName>
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        <mgmtInvLei>549300F7VSXTKBGHJE47</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
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        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares Core U.S. Aggregate Bond ETF" sharesOutstandingClassId="C000012092" sharesOutstandingTickerSymbol="AGG"/>
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        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>-0.01000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.04000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.83000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.83000000</indexFundReturnDailyStdevAfterExpense>
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        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
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          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
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            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
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            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
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                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
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              <didIndemnificationRights>N</didIndemnificationRights>
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          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
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        <netIncomeSecuritiesLending>2339235.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-6 (17 CFR 270.17a-6)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
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        <isExpenseLimitationInPlace>Y</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>Y</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
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          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
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            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
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            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
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        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
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            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
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            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
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          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
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            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
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            <principalTotalPurchaseSale>50765330685.05000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Credit Suisse Securities (USA) LLC</principalName>
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            <principalCrdNo>000000816</principalCrdNo>
            <principalLei>1V8Y6QCX6YMJ2OELII46</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>26776011610.95000000</principalTotalPurchaseSale>
          </principalTransaction>
        </principalTransactions>
        <principalAggregatePurchase>324234124326.22000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>88636127969.38153846</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares USD Bond Factor ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000073477</mgmtInvSeriesId>
        <mgmtInvLei>5493009197CZ48IFJQ17</mgmtInvLei>
        <isFirstFilingByFund>Y</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares USD Bond Factor ETF" sharesOutstandingClassId="C000230412" sharesOutstandingTickerSymbol="USBF"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>Y</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>0.24000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>0.07000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.63000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.63000000</indexFundReturnDailyStdevAfterExpense>
          </indexFundInfo>
        </fundTypes>
        <isNonDiversifiedCompany>Y</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>62531.62000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>14.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>Y</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>Y</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
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            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
          <custodian>
            <custodianName>SG Americas Securities, LLC</custodianName>
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            <custodianStateCountry custodianState="US-NY" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
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            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
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          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
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            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <brokers>
          <broker>
            <brokerName>SG Americas Securities, LLC</brokerName>
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            <brokerCrdNo>000128351</brokerCrdNo>
            <brokerLei>549300F35UE0BOM1WJ55</brokerLei>
            <brokerStateCountry brokerState="US-NY" brokerCountry="US"/>
            <grossCommission>40.69000000</grossCommission>
          </broker>
        </brokers>
        <aggregateCommission>40.69000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
            <principalFileNo>8-69787</principalFileNo>
            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>17103584.23000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Credit Suisse Securities (USA) LLC</principalName>
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            <principalCrdNo>000000816</principalCrdNo>
            <principalLei>1V8Y6QCX6YMJ2OELII46</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>10247115.62000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
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            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>3521238.27000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
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            <principalCrdNo>000008209</principalCrdNo>
            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>19372373.67000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Jane Street Capital, LLC</principalName>
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            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>2693642.65000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
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          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Institutional</principalName>
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            <principalCrdNo>N/A</principalCrdNo>
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            <principalStateCountry principalState="US-CA" principalCountry="US"/>
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          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
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          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
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          <principalTransaction>
            <principalName>BNP Paribas Securities Corp.</principalName>
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            <principalLei>RCNB6OTYUAMMP879YW96</principalLei>
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        <principalAggregatePurchase>128965909.66000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>19740552.83800000</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares 10+ Year Investment Grade Corporate Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000026651</mgmtInvSeriesId>
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        <isFirstFilingByFund>N</isFirstFilingByFund>
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        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
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        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
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            <indexFundReturnDiffAfterExpense>-0.96000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>1.05000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>1.05000000</indexFundReturnDailyStdevAfterExpense>
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        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
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        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
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            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
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                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
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              <didIndemnificationRights>N</didIndemnificationRights>
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          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
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        <avgPortfolioSecuritiesValue>161425141.15000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>306141.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
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        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
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        <transferAgents>
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            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
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            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
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        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
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          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
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            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>Wells Fargo Securities, LLC</custodianName>
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            <custodianStateCountry custodianState="US-NC" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
            <principalFileNo>8-8177</principalFileNo>
            <principalCrdNo>000007059</principalCrdNo>
            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>293397908.82000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Pershing LLC</principalName>
            <principalFileNo>8-17574</principalFileNo>
            <principalCrdNo>000007560</principalCrdNo>
            <principalLei>ZI8Q1A8EI8LQFJNM0D94</principalLei>
            <principalStateCountry principalState="US-NJ" principalCountry="US"/>
            <principalTotalPurchaseSale>38193343.71000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
            <principalFileNo>8-129</principalFileNo>
            <principalCrdNo>000000361</principalCrdNo>
            <principalLei>FOR8UP27PHTHYVLBNG30</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>729880219.22000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
            <principalFileNo>8-15869</principalFileNo>
            <principalCrdNo>000008209</principalCrdNo>
            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>72371351.24000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
            <principalFileNo>8-35008</principalFileNo>
            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>1424032941.42000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>National Securities Clearing Corporation</principalName>
            <principalFileNo>8-164</principalFileNo>
            <principalCrdNo>000007569</principalCrdNo>
            <principalLei>549300RYC9NELN2ICA34</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>2337011062.55000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
            <principalFileNo>N/A</principalFileNo>
            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>400320000.00000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
            <principalFileNo>8-41342</principalFileNo>
            <principalCrdNo>000019714</principalCrdNo>
            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>85868380.94000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Wells Fargo Securities, LLC</principalName>
            <principalFileNo>8-65876</principalFileNo>
            <principalCrdNo>000126292</principalCrdNo>
            <principalLei>VYVVCKR63DVZZN70PB21</principalLei>
            <principalStateCountry principalState="US-NC" principalCountry="US"/>
            <principalTotalPurchaseSale>17654257.35000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
            <principalFileNo>8-69787</principalFileNo>
            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>558694158.93000000</principalTotalPurchaseSale>
          </principalTransaction>
        </principalTransactions>
        <principalAggregatePurchase>6158055668.65000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>2472584987.02384615</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares High Yield Bond Factor ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000057341</mgmtInvSeriesId>
        <mgmtInvLei>54930005IQ49IXN46616</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares High Yield Bond Factor ETF" sharesOutstandingClassId="C000182992" sharesOutstandingTickerSymbol="HYDB"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>Y</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>0.09000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.26000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.57000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.57000000</indexFundReturnDailyStdevAfterExpense>
          </indexFundInfo>
        </fundTypes>
        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>15995788.12000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>51688.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
          <custodian>
            <custodianName>BofA Securities, Inc.</custodianName>
            <custodianLei>549300HN4UKV1E2R3U73</custodianLei>
            <custodianStateCountry custodianState="US-NY" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
          <custodian>
            <custodianName>Euroclear Bank</custodianName>
            <custodianLei>549300OZ46BRLZ8Y6F65</custodianLei>
            <custodianCountry>BE</custodianCountry>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7)</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
            <principalFileNo>8-8177</principalFileNo>
            <principalCrdNo>000007059</principalCrdNo>
            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>26169771.27000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
            <principalFileNo>8-15869</principalFileNo>
            <principalCrdNo>000008209</principalCrdNo>
            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>19004768.05000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
            <principalFileNo>8-41342</principalFileNo>
            <principalCrdNo>000019714</principalCrdNo>
            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>12218422.58000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
            <principalFileNo>8-129</principalFileNo>
            <principalCrdNo>000000361</principalCrdNo>
            <principalLei>FOR8UP27PHTHYVLBNG30</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>30488379.47000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Credit Suisse Securities (USA) LLC</principalName>
            <principalFileNo>8-422</principalFileNo>
            <principalCrdNo>000000816</principalCrdNo>
            <principalLei>1V8Y6QCX6YMJ2OELII46</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>11258737.00000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
            <principalFileNo>N/A</principalFileNo>
            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>80741000.00000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
            <principalFileNo>8-69787</principalFileNo>
            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>37908094.09000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Jane Street Capital, LLC</principalName>
            <principalFileNo>8-52275</principalFileNo>
            <principalCrdNo>000103782</principalCrdNo>
            <principalLei>549300ZM16HMPEPNV857</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>56787171.24000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Jefferies LLC</principalName>
            <principalFileNo>8-15074</principalFileNo>
            <principalCrdNo>000002347</principalCrdNo>
            <principalLei>58PU97L1C0WSRCWADL48</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>16169343.30000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
            <principalFileNo>8-35008</principalFileNo>
            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>31284959.25000000</principalTotalPurchaseSale>
          </principalTransaction>
        </principalTransactions>
        <principalAggregatePurchase>355059574.17000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>146234726.44923076</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares 3-7 Year Treasury Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000013695</mgmtInvSeriesId>
        <mgmtInvLei>549300BUGBHWMFPSNL42</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares 3-7 Year Treasury Bond ETF" sharesOutstandingClassId="C000037537" sharesOutstandingTickerSymbol="IEI"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>-0.21000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.36000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.77000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.77000000</indexFundReturnDailyStdevAfterExpense>
          </indexFundInfo>
        </fundTypes>
        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>161901658.56000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>152643.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
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          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
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          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
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      <managementInvestmentQuestion>
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          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
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          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
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            <indexFundReturnDiffAfterExpense>-0.19000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.89000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.89000000</indexFundReturnDailyStdevAfterExpense>
          </indexFundInfo>
        </fundTypes>
        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>43268770.23000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>76213.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
          <custodian>
            <custodianName>BofA Securities, Inc.</custodianName>
            <custodianLei>549300HN4UKV1E2R3U73</custodianLei>
            <custodianStateCountry custodianState="US-NY" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
            <principalFileNo>N/A</principalFileNo>
            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>152260000.00000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
            <principalFileNo>8-8177</principalFileNo>
            <principalCrdNo>000007059</principalCrdNo>
            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>40233287.43000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
            <principalFileNo>8-129</principalFileNo>
            <principalCrdNo>000000361</principalCrdNo>
            <principalLei>FOR8UP27PHTHYVLBNG30</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>44261365.55000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Jane Street Capital, LLC</principalName>
            <principalFileNo>8-52275</principalFileNo>
            <principalCrdNo>000103782</principalCrdNo>
            <principalLei>549300ZM16HMPEPNV857</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>43739054.20000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
            <principalFileNo>8-15869</principalFileNo>
            <principalCrdNo>000008209</principalCrdNo>
            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>40594555.46000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Pershing LLC</principalName>
            <principalFileNo>8-17574</principalFileNo>
            <principalCrdNo>000007560</principalCrdNo>
            <principalLei>ZI8Q1A8EI8LQFJNM0D94</principalLei>
            <principalStateCountry principalState="US-NJ" principalCountry="US"/>
            <principalTotalPurchaseSale>17311520.22000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
            <principalFileNo>8-35008</principalFileNo>
            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>154801712.96000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>National Securities Clearing Corporation</principalName>
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            <principalCrdNo>000007569</principalCrdNo>
            <principalLei>549300RYC9NELN2ICA34</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>225276901.99000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BNY Mellon Capital Markets, LLC</principalName>
            <principalFileNo>8-35255</principalFileNo>
            <principalCrdNo>000017454</principalCrdNo>
            <principalLei>VJW2DOOHGDT6PR0ZRO63</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>10984634.55000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
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            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>103012490.95000000</principalTotalPurchaseSale>
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        </principalTransactions>
        <principalAggregatePurchase>926085621.82000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>843972484.12769230</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares Investment Grade Bond Factor ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000057342</mgmtInvSeriesId>
        <mgmtInvLei>549300QBLHV9U0KL0M22</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares Investment Grade Bond Factor ETF" sharesOutstandingClassId="C000182993" sharesOutstandingTickerSymbol="IGEB"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>Y</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>-0.41000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.59000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.75000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.75000000</indexFundReturnDailyStdevAfterExpense>
          </indexFundInfo>
        </fundTypes>
        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>4898191.40000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>7576.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>BofA Securities, Inc.</custodianName>
            <custodianLei>549300HN4UKV1E2R3U73</custodianLei>
            <custodianStateCountry custodianState="US-NY" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>Jane Street Capital, LLC</principalName>
            <principalFileNo>8-52275</principalFileNo>
            <principalCrdNo>000103782</principalCrdNo>
            <principalLei>549300ZM16HMPEPNV857</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>23424405.83000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>MarketAxess Corporation</principalName>
            <principalFileNo>8-50727</principalFileNo>
            <principalCrdNo>000044542</principalCrdNo>
            <principalLei>GPSMMRI21JE7ZCVYF972</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>10962981.13000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Pershing LLC</principalName>
            <principalFileNo>8-17574</principalFileNo>
            <principalCrdNo>000007560</principalCrdNo>
            <principalLei>ZI8Q1A8EI8LQFJNM0D94</principalLei>
            <principalStateCountry principalState="US-NJ" principalCountry="US"/>
            <principalTotalPurchaseSale>18024568.56000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
            <principalFileNo>N/A</principalFileNo>
            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>36970000.00000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
            <principalFileNo>8-129</principalFileNo>
            <principalCrdNo>000000361</principalCrdNo>
            <principalLei>FOR8UP27PHTHYVLBNG30</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>32199967.24000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
            <principalFileNo>8-35008</principalFileNo>
            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
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            <principalTotalPurchaseSale>43711750.79000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Deutsche Bank Securities Inc.</principalName>
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            <principalCrdNo>000002525</principalCrdNo>
            <principalLei>9J6MBOOO7BECTDTUZW19</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>8516813.91000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
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            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>22640196.36000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
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            <principalCrdNo>000007059</principalCrdNo>
            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>11961037.77000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
            <principalFileNo>8-69787</principalFileNo>
            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>42582844.33000000</principalTotalPurchaseSale>
          </principalTransaction>
        </principalTransactions>
        <principalAggregatePurchase>291885384.70000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>162134955.79153846</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares National Muni Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000018861</mgmtInvSeriesId>
        <mgmtInvLei>549300H21FUYFQW9N157</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares National Muni Bond ETF" sharesOutstandingClassId="C000052220" sharesOutstandingTickerSymbol="MUB"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>-0.01000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.08000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.19000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.18000000</indexFundReturnDailyStdevAfterExpense>
          </indexFundInfo>
        </fundTypes>
        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <didFundLendSecurities>N</didFundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>N/A</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>N/A</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>Y</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
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            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
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            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
            <principalFileNo>8-15869</principalFileNo>
            <principalCrdNo>000008209</principalCrdNo>
            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>1712978815.40000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Hilltop Securities Inc.</principalName>
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            <principalLei>549300IXU82PMU6XZT45</principalLei>
            <principalStateCountry principalState="US-TX" principalCountry="US"/>
            <principalTotalPurchaseSale>130930401.00000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Pershing LLC</principalName>
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            <principalLei>ZI8Q1A8EI8LQFJNM0D94</principalLei>
            <principalStateCountry principalState="US-NJ" principalCountry="US"/>
            <principalTotalPurchaseSale>89309877.90000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
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            <principalCrdNo>000019714</principalCrdNo>
            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>655583230.60000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>BlackRock Liquidity Funds - MuniCash</principalName>
            <principalFileNo>N/A</principalFileNo>
            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>549300RWBJ885673DL84</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>8458057027.56000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
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            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>3411664560.63000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
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          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
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          <principalTransaction>
            <principalName>Wells Fargo Securities, LLC</principalName>
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            <principalLei>VYVVCKR63DVZZN70PB21</principalLei>
            <principalStateCountry principalState="US-NC" principalCountry="US"/>
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          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
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            <principalLei>FOR8UP27PHTHYVLBNG30</principalLei>
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        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>23137058291.80692307</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares MBS ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000013702</mgmtInvSeriesId>
        <mgmtInvLei>549300M0TH0IE2E6RP07</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
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        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares MBS ETF" sharesOutstandingClassId="C000037544" sharesOutstandingTickerSymbol="MBB"/>
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        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
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            <indexFundReturnDiffBeforeExpense>-0.23000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.27000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.58000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.58000000</indexFundReturnDailyStdevAfterExpense>
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        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <didFundLendSecurities>N</didFundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
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            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
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                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
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              <didIndemnificationRights>N</didIndemnificationRights>
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        <collateralManagers>
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          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>N/A</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>N/A</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
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        <isExpenseLimitationInPlace>Y</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>Y</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
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            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
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            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
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        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
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        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
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            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
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            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
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            <adminStateCountry adminState="US-MA" adminCountry="US"/>
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        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
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            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
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            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>Credit Suisse Securities (USA) LLC</principalName>
            <principalFileNo>8-422</principalFileNo>
            <principalCrdNo>000000816</principalCrdNo>
            <principalLei>1V8Y6QCX6YMJ2OELII46</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>17565693303.21000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
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            <principalTotalPurchaseSale>17583040392.73000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Wells Fargo Securities, LLC</principalName>
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          </principalTransaction>
          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Institutional</principalName>
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            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>549300JDHS1T46VWOG19</principalLei>
            <principalStateCountry principalState="US-CA" principalCountry="US"/>
            <principalTotalPurchaseSale>16418589231.81000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
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            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
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            <principalTotalPurchaseSale>25478087183.69000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
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            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>52149415502.56000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Nomura Securities International, Inc.</principalName>
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            <principalLei>OXTKY6Q8X53C9ILVV871</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>8349850227.65000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
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            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>28336707825.06000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
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            <principalLei>FOR8UP27PHTHYVLBNG30</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>18153019788.83000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
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            <principalCrdNo>000019714</principalCrdNo>
            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>4722989847.50000000</principalTotalPurchaseSale>
          </principalTransaction>
        </principalTransactions>
        <principalAggregatePurchase>191405689035.00000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>25492939823.36307692</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares ESG Aware 1-5 Year USD Corporate Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000058036</mgmtInvSeriesId>
        <mgmtInvLei>549300A3SLEQ53E2BD05</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares ESG Aware 1-5 Year USD Corporate Bond ETF" sharesOutstandingClassId="C000189864" sharesOutstandingTickerSymbol="SUSB"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>-0.08000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.20000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.43000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.43000000</indexFundReturnDailyStdevAfterExpense>
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        </fundTypes>
        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>32630761.33000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>54530.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
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            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>BofA Securities, Inc.</custodianName>
            <custodianLei>549300HN4UKV1E2R3U73</custodianLei>
            <custodianStateCountry custodianState="US-NY" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
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            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
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            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
            <principalFileNo>8-129</principalFileNo>
            <principalCrdNo>000000361</principalCrdNo>
            <principalLei>FOR8UP27PHTHYVLBNG30</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>192536600.17000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
            <principalFileNo>8-41342</principalFileNo>
            <principalCrdNo>000019714</principalCrdNo>
            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>23485801.42000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Jane Street Capital, LLC</principalName>
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            <principalLei>549300ZM16HMPEPNV857</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>79362203.52000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>National Securities Clearing Corporation</principalName>
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            <principalCrdNo>000007569</principalCrdNo>
            <principalLei>549300RYC9NELN2ICA34</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>140977272.34000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
            <principalFileNo>8-35008</principalFileNo>
            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
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          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
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            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>296396000.00000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
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            <principalStateCountry principalState="US-NY" principalCountry="US"/>
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          <principalTransaction>
            <principalName>Pershing LLC</principalName>
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            <principalLei>ZI8Q1A8EI8LQFJNM0D94</principalLei>
            <principalStateCountry principalState="US-NJ" principalCountry="US"/>
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          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
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            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>265450383.94000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
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        <principalAggregatePurchase>1606472298.43000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>954222377.11153846</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares Government/Credit Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000013701</mgmtInvSeriesId>
        <mgmtInvLei>5493005N2TW2082UOF16</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
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        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares Government/Credit Bond ETF" sharesOutstandingClassId="C000037543" sharesOutstandingTickerSymbol="GBF"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
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            <indexFundReturnDiffAfterExpense>-0.20000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.93000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.93000000</indexFundReturnDailyStdevAfterExpense>
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        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
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        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
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                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
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              <didIndemnificationRights>N</didIndemnificationRights>
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        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
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        <paymentToAgentManagers>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
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        </paymentToAgentManagers>
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        <netIncomeSecuritiesLending>12204.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
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        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
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            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
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            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
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        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
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          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
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      <managementInvestmentQuestion>
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        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>1059090615.11000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>1898275.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 17a-6 (17 CFR 270.17a-6)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
          <custodian>
            <custodianName>Wells Fargo Securities, LLC</custodianName>
            <custodianLei>VYVVCKR63DVZZN70PB21</custodianLei>
            <custodianStateCountry custodianState="US-NC" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
          <custodian>
            <custodianName>Euroclear Bank</custodianName>
            <custodianLei>549300OZ46BRLZ8Y6F65</custodianLei>
            <custodianCountry>BE</custodianCountry>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7)</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
            <principalFileNo>8-35008</principalFileNo>
            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>2984306202.53000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
            <principalFileNo>8-69787</principalFileNo>
            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>4279656641.46000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
            <principalFileNo>8-8177</principalFileNo>
            <principalCrdNo>000007059</principalCrdNo>
            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>637784253.36000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
            <principalFileNo>8-129</principalFileNo>
            <principalCrdNo>000000361</principalCrdNo>
            <principalLei>FOR8UP27PHTHYVLBNG30</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>1296805959.17000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Pershing LLC</principalName>
            <principalFileNo>8-17574</principalFileNo>
            <principalCrdNo>000007560</principalCrdNo>
            <principalLei>ZI8Q1A8EI8LQFJNM0D94</principalLei>
            <principalStateCountry principalState="US-NJ" principalCountry="US"/>
            <principalTotalPurchaseSale>162885683.90000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
            <principalFileNo>N/A</principalFileNo>
            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>3308110000.00000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>National Securities Clearing Corporation</principalName>
            <principalFileNo>8-164</principalFileNo>
            <principalCrdNo>000007569</principalCrdNo>
            <principalLei>549300RYC9NELN2ICA34</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>5044664234.24000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Wells Fargo Securities, LLC</principalName>
            <principalFileNo>8-65876</principalFileNo>
            <principalCrdNo>000126292</principalCrdNo>
            <principalLei>VYVVCKR63DVZZN70PB21</principalLei>
            <principalStateCountry principalState="US-NC" principalCountry="US"/>
            <principalTotalPurchaseSale>305000333.34000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
            <principalFileNo>8-15869</principalFileNo>
            <principalCrdNo>000008209</principalCrdNo>
            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>477767816.64000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
            <principalFileNo>8-41342</principalFileNo>
            <principalCrdNo>000019714</principalCrdNo>
            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>1911667657.66000000</principalTotalPurchaseSale>
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        </principalTransactions>
        <principalAggregatePurchase>21756633526.17000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>11569964801.43000000</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares Core 10+ Year USD Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000026652</mgmtInvSeriesId>
        <mgmtInvLei>549300AS0BPHN7FEW779</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares Core 10+ Year USD Bond ETF" sharesOutstandingClassId="C000080010" sharesOutstandingTickerSymbol="ILTB"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>0.02000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.04000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>1.54000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>1.54000000</indexFundReturnDailyStdevAfterExpense>
          </indexFundInfo>
        </fundTypes>
        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>6994017.74000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>26221.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 17a-6 (17 CFR 270.17a-6)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>Euroclear Bank</custodianName>
            <custodianLei>549300OZ46BRLZ8Y6F65</custodianLei>
            <custodianCountry>BE</custodianCountry>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7)</custodyType>
          </custodian>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
          <custodian>
            <custodianName>J.P. Morgan Securities LLC</custodianName>
            <custodianLei>ZBUT11V806EZRVTWT807</custodianLei>
            <custodianStateCountry custodianState="US-NY" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
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            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
            <principalFileNo>8-41342</principalFileNo>
            <principalCrdNo>000019714</principalCrdNo>
            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>9740060.71000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
            <principalFileNo>8-15869</principalFileNo>
            <principalCrdNo>000008209</principalCrdNo>
            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>13269861.80000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
            <principalFileNo>8-35008</principalFileNo>
            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>68197583.10000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Commerz Markets LLC</principalName>
            <principalFileNo>8-49647</principalFileNo>
            <principalCrdNo>000041957</principalCrdNo>
            <principalLei>549300IMBXQ8SGH3HJ31</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>28515887.82000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Jane Street Capital, LLC</principalName>
            <principalFileNo>8-52275</principalFileNo>
            <principalCrdNo>000103782</principalCrdNo>
            <principalLei>549300ZM16HMPEPNV857</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>45401450.23000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>RBC Capital Markets, LLC</principalName>
            <principalFileNo>8-45411</principalFileNo>
            <principalCrdNo>000031194</principalCrdNo>
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        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>-0.03000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.28000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.21000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.21000000</indexFundReturnDailyStdevAfterExpense>
          </indexFundInfo>
        </fundTypes>
        <isNonDiversifiedCompany>Y</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <didFundLendSecurities>N</didFundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>N/A</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>N/A</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
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            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
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            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
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            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
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            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
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            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
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            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
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            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
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            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
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            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
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        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
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          <principalTransaction>
            <principalName>Pershing LLC</principalName>
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          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
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          <principalTransaction>
            <principalName>BlackRock Liquidity Funds - New York Money Fund</principalName>
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          <principalTransaction>
            <principalName>Wells Fargo Securities, LLC</principalName>
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          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
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          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
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          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
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          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
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          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
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        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>530769195.20923076</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares 25+ Year Treasury STRIPS Bond ETF</mgmtInvFundName>
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        <isFirstFilingByFund>N</isFirstFilingByFund>
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        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
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        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
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            <indexFundReturnDiffAfterExpense>-1.86000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>3.55000000</indexFundReturnDailyStdevBeforeExpense>
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        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
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        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
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            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
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              <didIndemnificationRights>N</didIndemnificationRights>
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          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
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        <avgPortfolioSecuritiesValue>0.00000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>2.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
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        <isExpenseLimitationInPlace>Y</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>Y</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
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            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
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        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
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          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
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          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
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          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
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            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
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          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
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        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
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            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
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        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
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            <adminName>State Street Bank and Trust Company</adminName>
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        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
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          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
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        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>Deutsche Bank Securities Inc.</principalName>
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          <principalTransaction>
            <principalName>BNP Paribas Securities Corp.</principalName>
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          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
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          <principalTransaction>
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          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
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          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
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            <principalStateCountry principalState="US-DE" principalCountry="US"/>
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          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
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          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
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            <principalCrdNo>000000361</principalCrdNo>
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            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>53068437.13000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Natwest Markets Securities Inc.</principalName>
            <principalFileNo>8-37135</principalFileNo>
            <principalCrdNo>000011707</principalCrdNo>
            <principalLei>ZE2ZWJ5BTIQJ8M0C6K34</principalLei>
            <principalStateCountry principalState="US-CT" principalCountry="US"/>
            <principalTotalPurchaseSale>7043670.78000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
            <principalFileNo>8-15869</principalFileNo>
            <principalCrdNo>000008209</principalCrdNo>
            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>11320580.20000000</principalTotalPurchaseSale>
          </principalTransaction>
        </principalTransactions>
        <principalAggregatePurchase>744668388.56000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>281760711.81000000</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares 7-10 Year Treasury Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000004358</mgmtInvSeriesId>
        <mgmtInvLei>549300XS1PPZG92M8L16</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares 7-10 Year Treasury Bond ETF" sharesOutstandingClassId="C000012088" sharesOutstandingTickerSymbol="IEF"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>-0.36000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.51000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>1.29000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>1.29000000</indexFundReturnDailyStdevAfterExpense>
          </indexFundInfo>
        </fundTypes>
        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
          </securityLending>
        </securityLendings>
        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>1585855441.86000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>1737581.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>N</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>N</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
          <custodian>
            <custodianName>Wells Fargo Securities, LLC</custodianName>
            <custodianLei>VYVVCKR63DVZZN70PB21</custodianLei>
            <custodianStateCountry custodianState="US-NC" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
        </brokerDealers>
        <aggregateCommission>0.00000000</aggregateCommission>
        <principalTransactions>
          <principalTransaction>
            <principalName>Barclays Capital Inc.</principalName>
            <principalFileNo>8-41342</principalFileNo>
            <principalCrdNo>000019714</principalCrdNo>
            <principalLei>AC28XWWI3WIBK2824319</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>6790158501.15000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Morgan Stanley &amp; Co. LLC</principalName>
            <principalFileNo>8-15869</principalFileNo>
            <principalCrdNo>000008209</principalCrdNo>
            <principalLei>9R7GPTSO7KV3UQJZQ078</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>3752316625.69000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>J.P. Morgan Securities LLC</principalName>
            <principalFileNo>8-35008</principalFileNo>
            <principalCrdNo>000000079</principalCrdNo>
            <principalLei>ZBUT11V806EZRVTWT807</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>19182346821.16000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Natwest Markets Securities Inc.</principalName>
            <principalFileNo>8-37135</principalFileNo>
            <principalCrdNo>000011707</principalCrdNo>
            <principalLei>ZE2ZWJ5BTIQJ8M0C6K34</principalLei>
            <principalStateCountry principalState="US-CT" principalCountry="US"/>
            <principalTotalPurchaseSale>1225567382.19000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BofA Securities, Inc.</principalName>
            <principalFileNo>8-69787</principalFileNo>
            <principalCrdNo>000283942</principalCrdNo>
            <principalLei>549300HN4UKV1E2R3U73</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>19375334973.33000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Deutsche Bank Securities Inc.</principalName>
            <principalFileNo>8-17822</principalFileNo>
            <principalCrdNo>000002525</principalCrdNo>
            <principalLei>9J6MBOOO7BECTDTUZW19</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>1717025248.22000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>HSBC Securities (USA) Inc.</principalName>
            <principalFileNo>8-41562</principalFileNo>
            <principalCrdNo>000019585</principalCrdNo>
            <principalLei>CYYGQCGNHMHPSMRL3R97</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>2122883427.23000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>Goldman Sachs &amp; Co. LLC</principalName>
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            <principalCrdNo>000000361</principalCrdNo>
            <principalLei>FOR8UP27PHTHYVLBNG30</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>4827378345.44000000</principalTotalPurchaseSale>
          </principalTransaction>
          <principalTransaction>
            <principalName>BlackRock Funds III - BlackRock Cash Funds: Treasury</principalName>
            <principalFileNo>N/A</principalFileNo>
            <principalCrdNo>N/A</principalCrdNo>
            <principalLei>5493005PQV5UQG4OSI49</principalLei>
            <principalStateCountry principalState="US-DE" principalCountry="US"/>
            <principalTotalPurchaseSale>3589890000.00000000</principalTotalPurchaseSale>
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          <principalTransaction>
            <principalName>Citigroup Global Markets Inc.</principalName>
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            <principalCrdNo>000007059</principalCrdNo>
            <principalLei>MBNUM2BPBDO7JBLYG310</principalLei>
            <principalStateCountry principalState="US-NY" principalCountry="US"/>
            <principalTotalPurchaseSale>3525331293.17000000</principalTotalPurchaseSale>
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        <principalAggregatePurchase>71159914713.50000000</principalAggregatePurchase>
        <isBrokerageResearchPayment>N</isBrokerageResearchPayment>
        <mnthlyAvgNetAssets>14838331814.04615384</mnthlyAvgNetAssets>
        <hasLineOfCredit>N</hasLineOfCredit>
        <isInterfundLending>N</isInterfundLending>
        <isInterfundBorrowing>N</isInterfundBorrowing>
      </managementInvestmentQuestion>
      <managementInvestmentQuestion>
        <mgmtInvFundName>iShares Short Treasury Bond ETF</mgmtInvFundName>
        <mgmtInvSeriesId>S000013694</mgmtInvSeriesId>
        <mgmtInvLei>549300F8ZJ4IZLOOBP30</mgmtInvLei>
        <isFirstFilingByFund>N</isFirstFilingByFund>
        <numAuthorizedClass>0</numAuthorizedClass>
        <numAddedClass>0</numAddedClass>
        <numTerminatedClass>0</numTerminatedClass>
        <sharesOutstandings>
          <sharesOutstanding sharesOutstandingClassName="iShares Short Treasury Bond ETF" sharesOutstandingClassId="C000037536" sharesOutstandingTickerSymbol="SHV"/>
        </sharesOutstandings>
        <fundTypes>
          <fundType>Exchange-Traded Fund</fundType>
          <indexFundInfo fundType="Index Fund">
            <isIndexFundAffiliated>N</isIndexFundAffiliated>
            <isIndexFundExclusive>N</isIndexFundExclusive>
            <indexFundReturnDiffBeforeExpense>-0.01000000</indexFundReturnDiffBeforeExpense>
            <indexFundReturnDiffAfterExpense>-0.16000000</indexFundReturnDiffAfterExpense>
            <indexFundReturnDailyStdevBeforeExpense>0.07000000</indexFundReturnDailyStdevBeforeExpense>
            <indexFundReturnDailyStdevAfterExpense>0.08000000</indexFundReturnDailyStdevAfterExpense>
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        </fundTypes>
        <isNonDiversifiedCompany>N</isNonDiversifiedCompany>
        <isForeignSubsidiary>N</isForeignSubsidiary>
        <isFundSecuritiesLending>Y</isFundSecuritiesLending>
        <fundLendSecurities didFundLendSecurities="Y">
          <isFundLiquidated>N</isFundLiquidated>
          <isFundAdverselyImpacted>N</isFundAdverselyImpacted>
        </fundLendSecurities>
        <securityLendings>
          <securityLending>
            <securitiesAgentName>BlackRock Institutional Trust Company, National Association</securitiesAgentName>
            <securitiesAgentLei>549300RK1FB0VMTPD087</securitiesAgentLei>
            <isSecuritiesAgentAffiliated>Y</isSecuritiesAgentAffiliated>
            <securityAgentIdemnity isSecurityAgentIdemnity="Y">
              <idemnityProviders>
                <idemnityProvider idemnityProviderName="BlackRock, Inc." idemnityProviderLei="549300LRIF3NWCU26A80"/>
              </idemnityProviders>
              <didIndemnificationRights>N</didIndemnificationRights>
            </securityAgentIdemnity>
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        <collateralManagers>
          <collateralManager collateralManagerName="BlackRock Fund Advisors" collateralManagerLei="549300YOOGP0Y1M95C20" isCollateralManagerAffliliated="Y" isCollateralManagerAffliliatedWithFund="Y"/>
        </collateralManagers>
        <paymentToAgentManagers>
          <paymentToAgentManagerType>Revenue sharing split</paymentToAgentManagerType>
          <paymentToAgentManagerType>Cash collateral reinvestment fee</paymentToAgentManagerType>
          <paymentToAgentManagerType>Other</paymentToAgentManagerType>
          <otherFeeDesc>Rebates paid to borrowers</otherFeeDesc>
        </paymentToAgentManagers>
        <avgPortfolioSecuritiesValue>166293651.61000000</avgPortfolioSecuritiesValue>
        <netIncomeSecuritiesLending>156711.00000000</netIncomeSecuritiesLending>
        <relyOnRuleTypes>
          <relyOnRuleType>Rule 32a-4 (17 CFR 270.32a-4)</relyOnRuleType>
          <relyOnRuleType>Rule 12d1-1 (17 CFR 270.12d1-1)</relyOnRuleType>
          <relyOnRuleType>Rule 6c-11 (17 CFR 270.6c-11)</relyOnRuleType>
          <relyOnRuleType>Rule 17a-7 (17 CFR 270.17a-7)</relyOnRuleType>
        </relyOnRuleTypes>
        <isExpenseLimitationInPlace>Y</isExpenseLimitationInPlace>
        <isExpenseReducedOrWaived>Y</isExpenseReducedOrWaived>
        <isFeesWaivedRecoupable>N</isFeesWaivedRecoupable>
        <isExpenseWaivedRecoupable>N</isExpenseWaivedRecoupable>
        <investmentAdvisers>
          <investmentAdviser>
            <investmentAdviserName>BlackRock Fund Advisors</investmentAdviserName>
            <investmentAdviserFileNo>801-22609</investmentAdviserFileNo>
            <investmentAdviserCrdNo>000105247</investmentAdviserCrdNo>
            <investmentAdviserLei>549300YOOGP0Y1M95C20</investmentAdviserLei>
            <investmentAdviserStateCountry investmentAdviserState="US-CA" investmentAdviserCountry="US"/>
            <isInvestmentAdviserHired>N</isInvestmentAdviserHired>
          </investmentAdviser>
        </investmentAdvisers>
        <transferAgents>
          <transferAgent>
            <transferAgentName>State Street Bank and Trust Company</transferAgentName>
            <transferAgentFileNo>85-05003</transferAgentFileNo>
            <transferAgentLei>571474TGEMMWANRLN572</transferAgentLei>
            <transferAgentStateCountry transferAgentState="US-MA" transferAgentCountry="US"/>
            <isTransferAgentAffiliated>N</isTransferAgentAffiliated>
            <isTransferAgentSubAgent>N</isTransferAgentSubAgent>
          </transferAgent>
        </transferAgents>
        <isTransferAgentHiredOrTerminated>N</isTransferAgentHiredOrTerminated>
        <pricingServices>
          <pricingService>
            <pricingServiceName>IHS Markit Ltd.</pricingServiceName>
            <pricingServiceLei>549300HLPTRASHS0E726</pricingServiceLei>
            <pricingServiceCountry>GB</pricingServiceCountry>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>ICE Data Services, Inc.</pricingServiceName>
            <pricingServiceLei>13-3668779</pricingServiceLei>
            <pricingServiceIdNumberDesc>Tax ID</pricingServiceIdNumberDesc>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Bloomberg L.P.</pricingServiceName>
            <pricingServiceLei>549300B56MD0ZC402L06</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
          <pricingService>
            <pricingServiceName>Refinitiv US Holdings Inc.</pricingServiceName>
            <pricingServiceLei>549300NF240HXJO7N016</pricingServiceLei>
            <pricingServiceStateCountry pricingServiceState="US-NY" pricingServiceCountry="US"/>
            <isPricingServiceAffiliated>N</isPricingServiceAffiliated>
          </pricingService>
        </pricingServices>
        <isPricingServiceHiredOrTerminated>N</isPricingServiceHiredOrTerminated>
        <custodians>
          <custodian>
            <custodianName>SG Americas Securities, LLC</custodianName>
            <custodianLei>549300F35UE0BOM1WJ55</custodianLei>
            <custodianStateCountry custodianState="US-NY" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>Y</isSubCustodian>
            <custodyType>Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6)</custodyType>
          </custodian>
          <custodian>
            <custodianName>State Street Bank and Trust Company</custodianName>
            <custodianLei>571474TGEMMWANRLN572</custodianLei>
            <custodianStateCountry custodianState="US-MA" custodianCountry="US"/>
            <isCustodianAffiliated>N</isCustodianAffiliated>
            <isSubCustodian>N</isSubCustodian>
            <custodyType>Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1))</custodyType>
          </custodian>
        </custodians>
        <isCustodianHiredOrTerminated>N</isCustodianHiredOrTerminated>
        <isShareholderServiceHiredTerminated>N</isShareholderServiceHiredTerminated>
        <admins>
          <admin>
            <adminName>State Street Bank and Trust Company</adminName>
            <adminLei>571474TGEMMWANRLN572</adminLei>
            <adminStateCountry adminState="US-MA" adminCountry="US"/>
            <isAdminAffiliated>N</isAdminAffiliated>
            <isAdminSubAdmin>N</isAdminSubAdmin>
          </admin>
        </admins>
        <isAdminHiredOrTerminated>N</isAdminHiredOrTerminated>
        <brokerDealers>
          <brokerDealer>
            <brokerDealerName>BlackRock Execution Services</brokerDealerName>
            <brokerDealerFileNo>8-48719</brokerDealerFileNo>
            <brokerDealerCrdNo>000039438</brokerDealerCrdNo>
            <brokerDealerLei>549300HFCRQ0NT5KY652</brokerDealerLei>
            <brokerDealerStateCountry brokerDealerState="US-NY" brokerDealerCountry="US"/>
            <brokerDealerCommission>0.00000000</brokerDealerCommission>
          </brokerDealer>
          <brokerDealer>
            <brokerDealerName>BlackRock Investments, LLC</brokerDealerName>
            <brokerDealerFileNo>8-48436</brokerDealerFileNo>
            <brokerDealerCrdNo>000038642</brokerDealerCrdNo>
            <brokerDealerLei>54930061FBHCKXL2G714</brokerDealerLei>
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    <signature registrantSignedName="iShares Trust" signedDate="2022-05-13" signature="Ann Frechette" title="Assistant Treasurer"/>
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</edgarSubmission>
