<informationTable xmlns="http://www.sec.gov/edgar/document/thirteenf/informationtable" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <infoTable>
       <nameOfIssuer>ISHARES TR</nameOfIssuer>
       <titleOfClass>S&amp;P 100 ETF</titleOfClass>
       <cusip>464287101</cusip>
       <value>5053</value>
       <shrsOrPrnAmt>
           <sshPrnamt>55300</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>OTR</investmentDiscretion>
       <otherManager>1</otherManager>
       <votingAuthority>
           <Sole>0</Sole>
           <Shared>55300</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>ISHARES TR</nameOfIssuer>
       <titleOfClass>CORE US AGGBD ET</titleOfClass>
       <cusip>464287226</cusip>
       <value>702</value>
       <shrsOrPrnAmt>
           <sshPrnamt>6331</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>SOLE</investmentDiscretion>
       <votingAuthority>
           <Sole>6331</Sole>
           <Shared>0</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>ISHARES TR</nameOfIssuer>
       <titleOfClass>IBOXX INV CP ETF</titleOfClass>
       <cusip>464287242</cusip>
       <value>129</value>
       <shrsOrPrnAmt>
           <sshPrnamt>1085</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>SOLE</investmentDiscretion>
       <votingAuthority>
           <Sole>1085</Sole>
           <Shared>0</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>ISHARES TR</nameOfIssuer>
       <titleOfClass>7-10 Y TR BD ETF</titleOfClass>
       <cusip>464287440</cusip>
       <value>129</value>
       <shrsOrPrnAmt>
           <sshPrnamt>1172</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>SOLE</investmentDiscretion>
       <votingAuthority>
           <Sole>1172</Sole>
           <Shared>0</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>ISHARES TR</nameOfIssuer>
       <titleOfClass>IBOXX HI YD ETF</titleOfClass>
       <cusip>464288513</cusip>
       <value>319</value>
       <shrsOrPrnAmt>
           <sshPrnamt>3903</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>SOLE</investmentDiscretion>
       <votingAuthority>
           <Sole>3903</Sole>
           <Shared>0</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>POWERSHARES ETF TR II</nameOfIssuer>
       <titleOfClass>S&amp;P500 LOW VOL</titleOfClass>
       <cusip>73937B779</cusip>
       <value>54053</value>
       <shrsOrPrnAmt>
           <sshPrnamt>1340277</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>OTR</investmentDiscretion>
       <otherManager>1</otherManager>
       <votingAuthority>
           <Sole>0</Sole>
           <Shared>1340277</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>POWERSHARES ETF TR II</nameOfIssuer>
       <titleOfClass>S&amp;P500 LOW VOL</titleOfClass>
       <cusip>73937B779</cusip>
       <value>741</value>
       <shrsOrPrnAmt>
           <sshPrnamt>18373</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>SOLE</investmentDiscretion>
       <votingAuthority>
           <Sole>18373</Sole>
           <Shared>0</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>SPDR S&amp;P 500 ETF TR</nameOfIssuer>
       <titleOfClass>TR UNIT</titleOfClass>
       <cusip>78462F103</cusip>
       <value>28940</value>
       <shrsOrPrnAmt>
           <sshPrnamt>140815</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>SOLE</investmentDiscretion>
       <votingAuthority>
           <Sole>140815</Sole>
           <Shared>0</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>SELECT SECTOR SPDR TR</nameOfIssuer>
       <titleOfClass>SBI MATERIALS</titleOfClass>
       <cusip>81369Y100</cusip>
       <value>12011</value>
       <shrsOrPrnAmt>
           <sshPrnamt>268041</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>OTR</investmentDiscretion>
       <otherManager>1</otherManager>
       <votingAuthority>
           <Sole>0</Sole>
           <Shared>268041</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>SELECT SECTOR SPDR TR</nameOfIssuer>
       <titleOfClass>SBI MATERIALS</titleOfClass>
       <cusip>81369Y100</cusip>
       <value>164</value>
       <shrsOrPrnAmt>
           <sshPrnamt>3674</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>SOLE</investmentDiscretion>
       <votingAuthority>
           <Sole>3674</Sole>
           <Shared>0</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>SELECT SECTOR SPDR TR</nameOfIssuer>
       <titleOfClass>SBI CONS STPLS</titleOfClass>
       <cusip>81369Y308</cusip>
       <value>12557</value>
       <shrsOrPrnAmt>
           <sshPrnamt>236651</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>OTR</investmentDiscretion>
       <otherManager>1</otherManager>
       <votingAuthority>
           <Sole>0</Sole>
           <Shared>236651</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>SELECT SECTOR SPDR TR</nameOfIssuer>
       <titleOfClass>SBI CONS STPLS</titleOfClass>
       <cusip>81369Y308</cusip>
       <value>167</value>
       <shrsOrPrnAmt>
           <sshPrnamt>3130</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>SOLE</investmentDiscretion>
       <votingAuthority>
           <Sole>3130</Sole>
           <Shared>0</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>SELECT SECTOR SPDR TR</nameOfIssuer>
       <titleOfClass>SBI INT-ENERGY</titleOfClass>
       <cusip>81369Y506</cusip>
       <value>11644</value>
       <shrsOrPrnAmt>
           <sshPrnamt>188134</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>OTR</investmentDiscretion>
       <otherManager>1</otherManager>
       <votingAuthority>
           <Sole>0</Sole>
           <Shared>188134</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>SELECT SECTOR SPDR TR</nameOfIssuer>
       <titleOfClass>SBI INT-ENERGY</titleOfClass>
       <cusip>81369Y506</cusip>
       <value>161</value>
       <shrsOrPrnAmt>
           <sshPrnamt>2594</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>SOLE</investmentDiscretion>
       <votingAuthority>
           <Sole>2594</Sole>
           <Shared>0</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>SELECT SECTOR SPDR TR</nameOfIssuer>
       <titleOfClass>SBI INT-INDS</titleOfClass>
       <cusip>81369Y704</cusip>
       <value>11861</value>
       <shrsOrPrnAmt>
           <sshPrnamt>213836</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>OTR</investmentDiscretion>
       <otherManager>1</otherManager>
       <votingAuthority>
           <Sole>0</Sole>
           <Shared>213836</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>SELECT SECTOR SPDR TR</nameOfIssuer>
       <titleOfClass>SBI INT-INDS</titleOfClass>
       <cusip>81369Y704</cusip>
       <value>164</value>
       <shrsOrPrnAmt>
           <sshPrnamt>2961</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>SOLE</investmentDiscretion>
       <votingAuthority>
           <Sole>2961</Sole>
           <Shared>0</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>SELECT SECTOR SPDR TR</nameOfIssuer>
       <titleOfClass>TECHNOLOGY</titleOfClass>
       <cusip>81369Y803</cusip>
       <value>12285</value>
       <shrsOrPrnAmt>
           <sshPrnamt>276947</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>OTR</investmentDiscretion>
       <otherManager>1</otherManager>
       <votingAuthority>
           <Sole>0</Sole>
           <Shared>276947</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>SELECT SECTOR SPDR TR</nameOfIssuer>
       <titleOfClass>TECHNOLOGY</titleOfClass>
       <cusip>81369Y803</cusip>
       <value>165</value>
       <shrsOrPrnAmt>
           <sshPrnamt>3720</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>SOLE</investmentDiscretion>
       <votingAuthority>
           <Sole>3720</Sole>
           <Shared>0</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>SELECT SECTOR SPDR TR</nameOfIssuer>
       <titleOfClass>SBI INT-UTILS</titleOfClass>
       <cusip>81369Y886</cusip>
       <value>12824</value>
       <shrsOrPrnAmt>
           <sshPrnamt>258449</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>OTR</investmentDiscretion>
       <otherManager>1</otherManager>
       <votingAuthority>
           <Sole>0</Sole>
           <Shared>258449</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>SELECT SECTOR SPDR TR</nameOfIssuer>
       <titleOfClass>SBI INT-UTILS</titleOfClass>
       <cusip>81369Y886</cusip>
       <value>171</value>
       <shrsOrPrnAmt>
           <sshPrnamt>3430</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>SOLE</investmentDiscretion>
       <votingAuthority>
           <Sole>3430</Sole>
           <Shared>0</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>VANGUARD INDEX FDS</nameOfIssuer>
       <titleOfClass>S&amp;P 500 ETF SHS</titleOfClass>
       <cusip>922908363</cusip>
       <value>20580</value>
       <shrsOrPrnAmt>
           <sshPrnamt>109143</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>OTR</investmentDiscretion>
       <otherManager>1</otherManager>
       <votingAuthority>
           <Sole>0</Sole>
           <Shared>109143</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
   <infoTable>
       <nameOfIssuer>VANGUARD INDEX FDS</nameOfIssuer>
       <titleOfClass>S&amp;P 500 ETF SHS</titleOfClass>
       <cusip>922908363</cusip>
       <value>315</value>
       <shrsOrPrnAmt>
           <sshPrnamt>1671</sshPrnamt>
           <sshPrnamtType>SH</sshPrnamtType>
       </shrsOrPrnAmt>
       <investmentDiscretion>SOLE</investmentDiscretion>
       <votingAuthority>
           <Sole>1671</Sole>
           <Shared>0</Shared>
           <None>0</None>
       </votingAuthority>
   </infoTable>
</informationTable>
