0000795422 fas3:S000005133Member fas3:AtbcMember 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:AtbcMember 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:AtbcMember fas3:C000014042Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:AtbcMember fas3:C000014045Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:AtbcMember fas3:C000014043Member 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:AtbcMember 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:AtbcMember fas3:C000014044Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:AtbcMember fas3:C000014032Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:AtbcMember fas3:C000014035Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:AtbcMember fas3:C000014033Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:AtbcMember fas3:C000014034Member 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:AtbcMember fas3:C000014052Member 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:AtbcMember fas3:C000014055Member 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:AtbcMember fas3:C000014053Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:RetailMember fas3:C000014129Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:InstitutuionalMember fas3:C000014046Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:InstitutuionalMember 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:InstitutuionalMember fas3:C000014056Member 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:InstitutuionalMember 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:AtbcMember fas3:C000014054Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:RetailMember 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:InstitutuionalMember fas3:C000014036Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:InstitutuionalMember 2011-10-31 2012-10-30 0000795422 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:AtbcMember fas3:ReturnBeforeTaxesMember fas3:C000014053Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:InstitutuionalMember fas3:ReturnBeforeTaxesMember fas3:C000014046Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:InstitutuionalMember rr:AfterTaxesOnDistributionsMember fas3:C000014046Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:InstitutuionalMember rr:AfterTaxesOnDistributionsAndSalesMember fas3:C000014046Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:InstitutuionalMember fas3:BarclaysUsMbsIndexMember 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:AtbcMember fas3:ReturnBeforeTaxesMember fas3:C000014042Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:AtbcMember rr:AfterTaxesOnDistributionsMember fas3:C000014042Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:AtbcMember rr:AfterTaxesOnDistributionsAndSalesMember fas3:C000014042Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:AtbcMember fas3:ReturnBeforeTaxesMember fas3:C000014045Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:AtbcMember fas3:ReturnBeforeTaxesMember fas3:C000014043Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:AtbcMember fas3:ReturnBeforeTaxesMember fas3:C000014044Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:AtbcMember fas3:BarclaysUsMbsIndexMember 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:InstitutuionalMember fas3:ReturnBeforeTaxesMember fas3:C000014056Member 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:InstitutuionalMember rr:AfterTaxesOnDistributionsMember fas3:C000014056Member 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:InstitutuionalMember rr:AfterTaxesOnDistributionsAndSalesMember fas3:C000014056Member 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:InstitutuionalMember fas3:BarclaysUsOneToThreeYearGovernmentAndCreditBondIndexMember 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:AtbcMember fas3:ReturnBeforeTaxesMember fas3:C000014032Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:AtbcMember rr:AfterTaxesOnDistributionsMember fas3:C000014032Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:AtbcMember rr:AfterTaxesOnDistributionsAndSalesMember fas3:C000014032Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:AtbcMember fas3:ReturnBeforeTaxesMember fas3:C000014035Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:AtbcMember fas3:ReturnBeforeTaxesMember fas3:C000014033Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:AtbcMember fas3:ReturnBeforeTaxesMember fas3:C000014034Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:AtbcMember fas3:BarclaysUsIntermediateGovernmentCreditBondIndexMember 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:AtbcMember fas3:ReturnBeforeTaxesMember fas3:C000014052Member 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:AtbcMember rr:AfterTaxesOnDistributionsMember fas3:C000014052Member 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:AtbcMember fas3:ReturnBeforeTaxesMember fas3:C000014055Member 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:AtbcMember rr:AfterTaxesOnDistributionsAndSalesMember fas3:C000014052Member 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:AtbcMember fas3:ReturnBeforeTaxesMember fas3:C000014054Member 2011-10-31 2012-10-30 0000795422 fas3:S000005135Member fas3:AtbcMember fas3:BarclaysUsOneToThreeYearGovernmentAndCreditBondIndexMember 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:InstitutuionalMember fas3:ReturnBeforeTaxesMember fas3:C000014036Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:InstitutuionalMember rr:AfterTaxesOnDistributionsMember fas3:C000014036Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:InstitutuionalMember rr:AfterTaxesOnDistributionsAndSalesMember fas3:C000014036Member 2011-10-31 2012-10-30 0000795422 fas3:S000005131Member fas3:InstitutuionalMember fas3:BarclaysUsIntermediateGovernmentCreditBondIndexMember 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:RetailMember fas3:ReturnBeforeTaxesMember fas3:C000014129Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:RetailMember rr:AfterTaxesOnDistributionsMember fas3:C000014129Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:RetailMember rr:AfterTaxesOnDistributionsAndSalesMember fas3:C000014129Member 2011-10-31 2012-10-30 0000795422 fas3:S000005133Member fas3:RetailMember fas3:BarclaysUsMbsIndexMember 2011-10-31 2012-10-30 pure iso4217:USD Sell All Shares Sell All Shares 832 816 818 Sell All Shares 834 723 707 761 855 534 534 725 252 2012-09-30 2012-09-30 <div style="display:none">~ http://www.fidelity.com/role/ScheduleShareholderFeesFidelityAdvisorMortgageSecuritiesFundInstitutional column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleShareholderFeesFidelityAdvisorMortgageSecuritiesFundClassATBC column period compact * ~</div> 2012-09-30 2012-09-30 <div style="display:none">~ http://www.fidelity.com/role/ScheduleShareholderFeesFidelityAdvisorIntermediateBondFund column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleShareholderFeesFidelityAdvisorShortFixed-IncomeFundInstitutional column period compact * ~</div> 839 2012-09-30 <div style="display:none">~ http://www.fidelity.com/role/ScheduleShareholderFeesFidelityAdvisorMortgageSecuritiesFund column period compact * ~</div> 2012-09-30 2012-09-30 <div style="display:none">~ http://www.fidelity.com/role/ScheduleShareholderFeesFidelityAdvisorIntermediateBondFundInstitutional column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleShareholderFeesFidelityAdvisorShortFixed-IncomeFund column period compact * ~</div> The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 451% of the average value of its portfolio. 832 816 1018 834 The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 451% of the average value of its portfolio. 280 The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 451% of the average value of its portfolio. www.advisor.fidelity.com 0.0354 www.advisor.fidelity.com 0.0334 723 707 761 855 www.advisor.fidelity.com 0.0463 291 0.0335 www.advisor.fidelity.com 534 534 725 839 www.advisor.fidelity.com 0.0327 324 0.0355 www.fidelity.com www.advisor.fidelity.com 0.0477 Fund Summary Fund/Class: Fidelity Advisor® Mortgage Securities Fund/A, T, B, C Fund Summary Fund/Class: Fidelity Advisor® Mortgage Securities Fund/Fidelity® Mortgage Securities Fund You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. 50000 Annual class operating expenses (expenses that you pay each year as a % of the value of your investment) Shareholder fees (fees paid directly from your investment) 0 0 0.04 0.04 Annual class operating expenses (expenses that you pay each year as a % of the value of your investment) Fund Summary Fund/Class: Fidelity Advisor® Mortgage Securities Fund/Institutional Shareholder fees (fees paid directly from your investment) Annual class operating expenses (expenses that you pay each year as a % of the value of your investment) The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. 0.0418 The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. 0.0394 Fund Summary Fund/Class: Fidelity Advisor® Intermediate Bond Fund/A, T, B, C You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. 50000 Shareholder fees (fees paid directly from your investment) <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualClassOperatingExpensesFidelityAdvisorMortgageSecuritiesFundInstitutional column period compact * ~</div> Annual class operating expenses (expenses that you pay each year as a % of the value of your investment) The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 129% of the average value of its portfolio. <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualClassOperatingExpensesFidelityAdvisorMortgageSecuritiesFundClassATBC column period compact * ~</div> The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. 0.0415 Fund Summary Fund/Class: Fidelity Advisor® Short Fixed-Income Fund/Institutional Shareholder fees (fees paid directly from your investment) The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 75% of the average value of its portfolio. 0.0204 The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. Fund Summary Fund/Class: Fidelity Advisor® Short Fixed-Income Fund/A, T, B, C You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $250,000 in the fund or certain other Fidelity funds. <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualClassOperatingExpensesFidelityAdvisorIntermediateBondFund column period compact * ~</div> 250000 Shareholder fees (fees paid directly from your investment) 0.015 0.015 0 0 Annual class operating expenses (expenses that you pay each year as a % of the value of your investment) The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 75% of the average value of its portfolio. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. Fund Summary Fund/Class: Fidelity Advisor® Intermediate Bond Fund/Institutional Shareholder fees (fees paid directly from your investment) Annual class operating expenses (expenses that you pay each year as a % of the value of your investment) 0.0191 <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualClassOperatingExpensesFidelityAdvisorMortgageSecuritiesFund column period compact * ~</div> The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 129% of the average value of its portfolio. 0.042 The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. 0.0433 <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualClassOperatingExpensesFidelityAdvisorIntermediateBondFundInstitutional column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualClassOperatingExpensesFidelityAdvisorShortFixedIncomeFund column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualClassOperatingExpensesFidelityAdvisorShortFixedIncomeFundInstitutional column period compact * ~</div> Annual class operating expenses (expenses that you pay each year as a % of the value of your investment) Shareholder fees (fees paid directly from your investment) 0.0275 0.0275 0 0 FIDELITY ADVISOR SERIES II The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus. The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund. 0.01 0.05 0 0 This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 46 Principal Investment Strategies On Class C shares redeemed less than one year after purchase. Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 0.75% or 0.25%, respectively. Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 0.75% or 0.25%, respectively. Declines over 6 years from 5.00% to 0%. This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated and if you hold your shares: 479 476 653 256 479 476 153 156 1824 1516 1327 1362 Principal Investment Strategies The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund. This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 51 Principal Investment Strategies 0.0892 <table border="1" width="95%"><tr><td><div align="left">During the periods shown in the chart: </div></td><td valign="bottom" align="center"><div align="center">Returns </div></td><td valign="bottom" align="center"><div align="center">Quarter ended</div></td></tr><tr><td><div align="left">Highest Quarter Return </div></td><td><div align="right">3.49% </div></td><td><div align="left">June 30, 2002</div></td></tr><tr><td><div align="left">Lowest Quarter Return </div></td><td><div align="right">-1.49% </div></td><td><div align="left">June 30, 2007</div></td></tr><tr><td><div align="left">Year-to-Date Return </div></td><td><div align="right">4.18% </div></td><td><div align="left">September 30, 2012</div></td></tr></table> The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. For the periods ended December 31, 2011 0.0881 <table border="1" width="95%"><tr><td><div align="left">During the periods shown in the chart for Class A: </div></td><td valign="bottom" align="center"><div align="center">Returns </div></td><td valign="bottom" align="center"><div align="center">Quarter ended</div></td></tr><tr><td><div align="left">Highest Quarter Return </div></td><td><div align="right">3.41% </div></td><td><div align="left">September 30, 2006</div></td></tr><tr><td><div align="left">Lowest Quarter Return </div></td><td><div align="right">-1.56% </div></td><td><div align="left">June 30, 2007</div></td></tr><tr><td><div align="left">Year-to-Date Return </div></td><td><div align="right">3.94% </div></td><td><div align="left">September 30, 2012</div></td></tr></table> Average Annual Returns Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. For the periods ended December 31, 2011 Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualTotalReturnsFidelityAdvisorMortgageSecuritiesFundInstitutionalBarChart column period compact * ~</div> The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus. On Class C shares redeemed less than one year after purchase. Declines over 3 years from 3.00% to 0%. Purchases of $250,000 or more will not be subject to a front-end sales charge but may be subject to a 0.25% CDSC if a finder's fee is paid at the time the shares are purchased. Purchases of $250,000 or more will not be subject to a front-end sales charge, but may be subject to a 0.50% contingent deferred sales charge (CDSC) if the intermediary has elected an upfront finder's fee at the time the shares are purchased, or a 0.75% CDSC if the shares purchased are recordkept in a Fidelity Advisor 401(k) Retirement Plan. This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated and if you hold your shares: 357 354 458 260 357 354 158 160 1272 1238 1311 1867 <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualTotalReturnsFidelityAdvisorMortgageSecuritiesFundClassATBCBarChart column period compact * ~</div> Average Annual Returns Principal Investment Strategies <table border="1" width="95%"><tr><td><div align="left">During the periods shown in the chart for Class A: </div></td><td valign="bottom" align="center"><div align="center">Returns </div></td><td valign="bottom" align="center"><div align="center">Quarter ended</div></td></tr><tr><td><div align="left">Highest Quarter Return </div></td><td><div align="right">6.93% </div></td><td><div align="left">June 30, 2009</div></td></tr><tr><td><div align="left">Lowest Quarter Return </div></td><td><div align="right">-3.66% </div></td><td><div align="left">December 31, 2008</div></td></tr><tr><td><div align="left">Year-to-Date Return </div></td><td><div align="right">4.15% </div></td><td><div align="left">September 30, 2012</div></td></tr></table> 0.1006 Average Annual Returns Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. For the periods ended December 31, 2011 The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund. Principal Investment Strategies Average Annual Returns <table border="1" width="95%"><tr><td><div align="left">During the periods shown in the chart: </div></td><td valign="bottom" align="center"><div align="center">Returns </div></td><td valign="bottom" align="center"><div align="center">Quarter ended</div></td></tr><tr><td><div align="left">Highest Quarter Return </div></td><td><div align="right">2.86% </div></td><td><div align="left">September 30, 2009</div></td></tr><tr><td><div align="left">Lowest Quarter Return </div></td><td><div align="right">-1.42% </div></td><td><div align="left">December 31, 2008</div></td></tr><tr><td><div align="left">Year-to-Date Return </div></td><td><div align="right">2.04% </div></td><td><div align="left">September 30, 2012</div></td></tr></table> This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 53 0.0647 After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. For the periods ended December 31, 2011 Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $250,000 in the fund or certain other Fidelity funds. More information about these and other discounts is available from your investment professional and in the Fund Distribution section beginning on page (Click Here) of the prospectus. 0 0 0.03 0.01 <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualTotalReturnsFidelityAdvisorIntermediateBondFundBarChart column period compact * ~</div> 0 0 0.03 0.01 <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualTotalReturnsFidelityAdvisorShortFixed-IncomeFundInstitutionalBarChart column period compact * ~</div> Purchases of $250,000 or more will not be subject to a front-end sales charge, but may be subject to a 0.50% contingent deferred sales charge (CDSC) if the intermediary has elected an upfront finder's fee at the time the shares are purchased, or a 0.75% CDSC if the shares purchased are recordkept in a Fidelity Advisor 401(k) Retirement Plan. Purchases of $250,000 or more will not be subject to a front-end sales charge but may be subject to a 0.25% CDSC if a finder's fee is paid at the time the shares are purchased. Declines over 3 years from 3.00% to 0%. On Class C shares redeemed less than one year after purchase. This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated and if you hold your shares: 220 220 453 257 220 220 153 157 1834 1192 1007 1007 Principal Investment Strategies The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund. 0.0629 <table border="1" width="95%"><tr><td><div align="left">During the periods shown in the chart for Class A: </div></td><td valign="bottom" align="center"><div align="center">Returns </div></td><td valign="bottom" align="center"><div align="center">Quarter ended</div></td></tr><tr><td><div align="left">Highest Quarter Return </div></td><td><div align="right">2.70% </div></td><td><div align="left">September 30, 2009</div></td></tr><tr><td><div align="left">Lowest Quarter Return </div></td><td><div align="right">-1.37% </div></td><td><div align="left">December 31, 2008</div></td></tr><tr><td><div align="left">Year-to-Date Return </div></td><td><div align="right">1.91% </div></td><td><div align="left">September 30, 2012</div></td></tr></table> This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 59 Average Annual Returns Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. For the periods ended December 31, 2011 Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares. Principal Investment Strategies <table border="1" width="95%"><tr><td><div align="left">During the periods shown in the chart: </div></td><td valign="bottom" align="center"><div align="center">Returns </div></td><td valign="bottom" align="center"><div align="center">Quarter ended</div></td></tr><tr><td><div align="left">Highest Quarter Return </div></td><td><div align="right">3.48% </div></td><td><div align="left">September 30, 2006</div></td></tr><tr><td><div align="left">Lowest Quarter Return </div></td><td><div align="right">-1.46% </div></td><td><div align="left">June 30, 2007</div></td></tr><tr><td><div align="left">Year-to-Date Return </div></td><td><div align="right">4.20% </div></td><td><div align="left">September 30, 2012</div></td></tr></table> 0.0912 <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualTotalReturnsFidelityAdvisorMortgageSecuritiesFundBarChart column period compact * ~</div> 2002-10-09 After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. For the periods ended December 31, 2011 Average Annual Returns <table border="1" width="95%"><tr><td><div align="left">During the periods shown in the chart: </div></td><td valign="bottom" align="center"><div align="center">Returns </div></td><td valign="bottom" align="center"><div align="center">Quarter ended</div></td></tr><tr><td><div align="left">Highest Quarter Return </div></td><td><div align="right">7.02% </div></td><td><div align="left">June 30, 2009</div></td></tr><tr><td><div align="left">Lowest Quarter Return </div></td><td><div align="right">-3.57% </div></td><td><div align="left">December 31, 2008</div></td></tr><tr><td><div align="left">Year-to-Date Return </div></td><td><div align="right">4.33% </div></td><td><div align="left">September 30, 2012</div></td></tr></table> 0.1031 Average Annual Returns After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. For the periods ended December 31, 2011 2012-10-29 485BPOS <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualTotalReturnsFidelityAdvisorIntermediateBondFundInstitutionalBarChart column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleAnnualTotalReturnsFidelityAdvisorShortFixed-IncomeFundBarChart column period compact * ~</div> false 2012-08-31 Investment Objective Fee Table Investment Objective Fee Table 0 0.0045 144 Portfolio Turnover <ul><li>Normally investing at least 80% of assets in investment-grade mortgage-related securities (those of medium and high quality) and repurchase agreements for those securities.</li><li>Investing in U.S. Government securities and instruments related to U.S. Government securities.</li><li>Investing in U.S. Government securities issued by entities that are chartered or sponsored by Congress but whose securities are neither issued nor guaranteed by the U.S. Treasury.</li><li>Managing the fund to have similar overall interest rate risk to the Barclays® U.S. MBS Index.</li><li>Allocating assets across different market sectors and maturities.</li><li>Analyzing the credit quality of the issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments.</li><li>Engaging in transactions that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest rate, total return, and credit default), options, and futures contracts - and forward-settling securities, to adjust the fund's risk exposure.</li><li>Investing in Fidelity's central funds (specialized investment vehicles used by Fidelity funds to invest in particular security types or investment disciplines).</li></ul> 0.0153 0.015 0.0078 0.0081 Hold Shares 648 639 774 483 483 474 639 648 Portfolio Turnover Investment Objective Fee Table 0 0.005 <ul><li>Normally investing at least 80% of assets in investment-grade mortgage-related securities (those of medium and high quality) and repurchase agreements for those securities.</li><li>Investing in U.S. Government securities and instruments related to U.S. Government securities.</li><li>Investing in U.S. Government securities issued by entities that are chartered or sponsored by Congress but whose securities are neither issued nor guaranteed by the U.S. Treasury.</li><li>Managing the fund to have similar overall interest rate risk to the Barclays® U.S. MBS Index.</li><li>Allocating assets across different market sectors and maturities.</li><li>Analyzing the credit quality of the issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments.</li><li>Engaging in transactions that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest rate, total return, and credit default), options, and futures contracts - and forward-settling securities, to adjust the fund's risk exposure.</li><li>Investing in Fidelity's central funds (specialized investment vehicles used by Fidelity funds to invest in particular security types or investment disciplines).</li></ul> 160 Portfolio Turnover <ul><li>Normally investing at least 80% of assets in investment-grade mortgage-related securities (those of medium and high quality) and repurchase agreements for those securities.</li><li>Investing in U.S. Government securities and instruments related to U.S. Government securities.</li><li>Investing in U.S. Government securities issued by entities that are chartered or sponsored by Congress but whose securities are neither issued nor guaranteed by the U.S. Treasury.</li><li>Managing the fund to have similar overall interest rate risk to the Barclays® U.S. MBS Index.</li><li>Allocating assets across different market sectors and maturities.</li><li>Analyzing the credit quality of the issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments.</li><li>Engaging in transactions that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest rate, total return, and credit default), options, and futures contracts - and forward-settling securities, to adjust the fund's risk exposure.</li><li>Investing in Fidelity's central funds (specialized investment vehicles used by Fidelity funds to invest in particular security types or investment disciplines). </li></ul> <ul><li>Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease. </li><li>Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.</li><li>Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease.</li><li>Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.</li></ul>An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. You could lose money by investing in the fund. Year-by-Year Returns Calendar Years 0.0244 0.0121 0.0637 <ul><li>Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease.</li><li> Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.</li><li>Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease.</li><li>Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.</li></ul>An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. 2002-06-30 0.0349 Lowest Quarter Return 2007-06-30 After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. 0.0637 0.052 0.0412 0.0623 0.0475 0.0313 0.0309 0.0569 Return Before Taxes Return After Taxes on Distributions Return After Taxes on Distributions and Sale of Fund Shares You could lose money by investing in the fund. Barclays® U.S. MBS Index Year-by-Year Returns 0.0221 0.009 0.0604 2006-09-30 0.0341 Lowest Quarter Return 2007-06-30 Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. 0.018 0.0079 0.0115 0.0182 0.0032 0.043 0.0623 0.0406 0.0255 0.0256 0.0402 0.0396 0.0368 0.0569 Class A - Return Before Taxes Class A - Return After Taxes on Distributions Class A - Return After Taxes on Distributions and Sale of Fund Shares Class T - Return Before Taxes <div style="display:none">~ http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedFidelityAdvisorMortgageSecuritiesFundInstitutional column period compact * ~</div> Investment Objective Fee Table 0.0083 0.008 0.0155 0.0157 Hold Shares 533 523 590 496 533 523 490 496 Portfolio Turnover <div style="display:none">~ http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedFidelityAdvisorMortgageSecuritiesFundClassATBC column period compact * ~</div> <ul><li>Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease.</li><li>Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.</li><li>Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.</li><li>Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease.</li><li>Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.</li></ul>An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. <ul><li>Normally investing at least 80% of assets in investment-grade debt securities (those of medium and high quality) of all types and repurchase agreements for those securities.</li><li>Managing the fund to have similar overall interest rate risk to the Barclays® U.S. Intermediate Government/Credit Bond Index.</li><li>Normally maintaining a dollar-weighted average maturity between three and 10 years.</li><li>Allocating assets across different market sectors and maturities.</li><li>Investing in domestic and foreign issuers.</li><li>Analyzing the credit quality of the issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments.</li><li>Engaging in transactions that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest rate, total return, and credit default), options, and futures contracts - and forward-settling securities, to adjust the fund's risk exposure.</li><li>Investing in Fidelity's central funds (specialized investment vehicles used by Fidelity funds to invest in particular security types or investment disciplines).</li></ul> You could lose money by investing in the fund. Year-by-Year Returns 2009-06-30 0.0693 Lowest Quarter Return 2008-12-31 0.0151 -0.0731 0.0582 Investment Objective Fee Table Portfolio Turnover Year-by-Year Returns Calendar Years <ul><li>Normally investing at least 80% of assets in investment-grade debt securities (those of medium and high quality) of all types and repurchase agreements for those securities.</li><li>Managing the fund to have similar overall interest rate risk to the Barclays® U.S. 1-3 Year Government/Credit Bond Index. </li><li>Normally maintaining a dollar-weighted average maturity of three years or less. </li><li>Allocating assets across different market sectors and maturities. </li><li>Investing in domestic and foreign issuers. </li><li>Analyzing the credit quality of the issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments. </li><li>Engaging in transactions that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest rate, total return, and credit default), options, and futures contracts - and forward-settling securities, to adjust the fund's risk exposure. </li><li>Investing in Fidelity's central funds (specialized investment vehicles used by Fidelity funds to invest in particular security types or investment disciplines). </li></ul> <ul><li>Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease.</li><li>Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. </li><li>Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change. </li><li>Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. </li><li>Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly. </li></ul>An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. 0 167 0.0183 -0.0249 0.0193 0.0286 Lowest Quarter Return 2008-12-31 After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. You could lose money by investing in the fund. 0.0193 0.0141 0.0125 0.0159 0.0307 0.0194 0.0195 0.0363 0.0291 0.0197 0.0188 0.0303 0.0218 0.0407 0.058 0.0457 0.0311 0.0305 0.0454 0.0454 0.0404 0.052 2009-09-30 Investment Objective Fee Table <div style="display:none">~ http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedFidelityAdvisorIntermediateBondFund column period compact * ~</div> 0.0052 0.007 0.007 0.015 0.0154 Hold Shares 486 574 371 371 486 474 371 371 <ul><li>Normally investing at least 80% of assets in investment-grade debt securities (those of medium and high quality) of all types and repurchase agreements for those securities. </li><li>Managing the fund to have similar overall interest rate risk to the Barclays® U.S. 1-3 Year Government/Credit Bond Index.</li><li>Normally maintaining a dollar-weighted average maturity of three years or less. </li><li>Allocating assets across different market sectors and maturities.</li><li>Investing in domestic and foreign issuers. </li><li>Analyzing the credit quality of the issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments.</li><li>Engaging in transactions that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest rate, total return, and credit default), options, and futures contracts - and forward-settling securities, to adjust the fund's risk exposure.</li><li>Investing in Fidelity's central funds (specialized investment vehicles used by Fidelity funds to invest in particular security types or investment disciplines).</li></ul> <ul><li>Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease.</li><li>Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. </li><li> Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.</li><li>Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease.</li><li>Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.</li></ul>An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. You could lose money by investing in the fund. Year-by-Year Returns Investment Objective Fee Table <ul><li>Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease.</li><li>Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.</li><li>Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease.</li><li>Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.</li></ul>An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. 0.0173 -0.0273 0.0176 0 0.0058 2009-09-30 0.027 Lowest Quarter Return 2008-12-31 186 Unlike the returns in the bar chart, the returns in the table reflect the maximum applicable sales charges. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. You could lose money by investing in the fund. Portfolio Turnover Year-by-Year Returns Calendar Years 2006-09-30 0.0348 Lowest Quarter Return 2007-06-30 <ul><li>Normally investing at least 80% of assets in investment-grade debt securities (those of medium and high quality) of all types and repurchase agreements for those securities.</li><li>Managing the fund to have similar overall interest rate risk to the Barclays® U.S. Intermediate Government/Credit Bond Index.</li><li>Normally maintaining a dollar-weighted average maturity between three and 10 years.</li><li>Allocating assets across different market sectors and maturities.</li><li>Investing in domestic and foreign issuers.</li><li>Analyzing the credit quality of the issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments.</li><li>Engaging in transactions that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest rate, total return, and credit default), options, and futures contracts - and forward-settling securities, to adjust the fund's risk exposure.</li><li>Investing in Fidelity's central funds (specialized investment vehicles used by Fidelity funds to invest in particular security types or investment disciplines).</li></ul> 0.0248 0.0129 0.0651 <ul><li>Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease.</li><li>Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.</li><li>Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.</li><li>Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease.</li><li>Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.</li></ul>An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate. You could lose money by investing in the fund. You could lose money by investing in the fund. 0.0023 -0.0023 0.0023 0.0015 -0.0207 -0.0009 0.0159 0.0272 0.0165 0.0169 0.0273 0.0203 0.0363 After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement. <div style="display:none">~ http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedFidelityAdvisorMortgageSecuritiesFund column period compact * ~</div> Year-by-Year Returns Calendar Years 0.0168 -0.0698 0.0617 After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement.Lowest Quarter Return 2009-06-30 0.0702 2008-12-31 Portfolio Turnover 0000795422 <div style="display:none">~ http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedFidelityAdvisorIntermediateBondFundInstitutional column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedFidelityAdvisorShortFixed-IncomeFund column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedFidelityAdvisorShortFixed-IncomeFundInstitutional column period compact * ~</div> The fund seeks a high level of current income, consistent with prudent investment risk. In seeking current income, the fund may also consider the potential for capital gain. The fund seeks a high level of current income, consistent with prudent investment risk. In seeking current income, the fund may also consider the potential for capital gain. 0.0032 0 0.0013 567 4.51 0.0032 0.0032 0.0032 0.0032 0.01 0.009 0.0025 0.0025 0.0024 0.0021 0.0028 0.0021 1824 1516 1327 1362 4.51 The fund seeks a high level of current income, consistent with prudent investment risk. In seeking current income, the fund may also consider the potential for capital gain. 0.0032 0 0.0018 Principal Investment Risks 628 4.51 Principal Investment Risks Performance The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Index section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.advisor.fidelity.com for updated return information. Past performance (before and after taxes) is not an indication of future performance. An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. 0.0443 0.0477 -0.0048 0.0953 0.0721 Year-to-Date Return Highest Quarter Return -0.0149 0.047 0.031 0.0305 0.0654 Institutional Class An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Performance The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Index section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.advisor.fidelity.com for updated return information. Past performance (before and after taxes) is not an indication of future performance. The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown. Calendar Years 0.0421 0.0455 -0.0076 0.0917 0.0688 Year-to-Date Return Highest Quarter Return -0.0156 After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. 0.0353 0.0206 0.0212 0.0353 0.0333 0.0363 0.0654 Class B - Return Before Taxes Class C - Return Before Taxes Barclays® U.S. MBS Index The fund seeks to provide a high rate of income. 0.0032 0.0032 0.0032 0.0032 0.0025 0.0025 0.009 0.01 0.0026 0.0023 0.0033 0.0025 Institutional Class Institutional Class 1272 1238 1311 1867 1.29 <div style="display:none">~ http://www.fidelity.com/role/ScheduleExpenseExampleFidelityAdvisorMortgageSecuritiesFundClassATBC column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleExpenseExampleNoRedemptionFidelityAdvisorMortgageSecuritiesFundClassATBC column period compact * ~</div> Principal Investment Risks An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Index section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.advisor.fidelity.com for updated return information. Performance Past performance (before and after taxes) is not an indication of future performance. The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown. Calendar Years Highest Quarter Return -0.0366 Year-to-Date Return 0.0343 0.0405 0.0318 0.1726 0.0773 The fund seeks to obtain a high level of current income consistent with the preservation of capital. Principal Investment Risks Performance The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Index section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.advisor.fidelity.com for updated return information. After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. 653 0.0196 0.0454 0.0272 0.0704 0.0372 0.75 Year-to-Date Return Highest Quarter Return Past performance (before and after taxes) is not an indication of future performance. An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Return Before Taxes Return After Taxes on Distributions Return After Taxes on Distributions and Sale of Fund Shares Barclays® U.S. 1-3 Year Government/Credit Bond Index 0.0254 0.0151 0.0156 0.0399 Barclays® U.S. Intermediate Government/Credit Bond Index Class C - Return Before Taxes Class B - Return Before Taxes Class T - Return Before Taxes Class A - Return After Taxes on Distributions and Sale of Fund Shares Institutional Class Class A - Return After Taxes on Distributions Institutional Class Class A - Return Before Taxes Institutional Class 0.0445 0.0307 0.0297 0.045 0.0444 0.0426 0.0588 <div style="display:none">~ http://www.fidelity.com/role/ScheduleExpenseExampleFidelityAdvisorMortgageSecuritiesFundInstitutional column period compact * ~</div> -0.0142 The fund seeks to obtain a high level of current income consistent with the preservation of capital. <div style="display:none">~ http://www.fidelity.com/role/ScheduleExpenseExampleFidelityAdvisorIntermediateBondFund column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleExpenseExampleFidelityAdvisorShortFixedIncomeFundInstitutional column period compact * ~</div> 0.0032 0 0.002 0.0032 0.0032 0.0032 0.0032 0.0015 0.0015 0.009 0.01 0.0023 0.0023 0.0028 0.0022 0.75 1834 1192 1007 1007 Principal Investment Risks An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Performance The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Index section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.advisor.fidelity.com for updated return information. Past performance (before and after taxes) is not an indication of future performance. The returns in the bar chart do not reflect any applicable sales charges; if sales charges were reflected, returns would be lower than those shown. Calendar Years The fund seeks to provide a high rate of income. Principal Investment Risks 0.0162 0.0433 0.0249 Performance 0.0674 0.0354 The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Index section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.fidelity.com for updated return information. 0.0032 0 0.0026 An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Year-to-Date Return Highest Quarter Return -0.0137 After-tax returns for Class A are shown in the table below and after-tax returns for other classes will vary. 726 1.29 Year-to-Date Return Highest Quarter Return -0.0146 Principal Investment Risks 0.0445 0.0484 -0.0039 0.0957 0.0726 An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Class A - Return Before Taxes Class A - Return After Taxes on Distributions Class A - Return After Taxes on Distributions and Sale of Fund Shares Class T - Return Before Taxes Class B - Return Before Taxes Class C - Return Before Taxes Barclays® U.S. 1-3 Year Government/Credit Bond Index 0.02 0.0106 0.0115 0.0203 0.0169 0.0147 0.0399 0.0232 Past performance (before and after taxes) is not an indication of future performance.Performance Fidelity Mortgage Securities Fund Fidelity Mortgage Securities Fund Fidelity Mortgage Securities Fund The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index over various periods of time. The index description appears in the Additional Information about the Index section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.advisor.fidelity.com for updated return information. Past performance (before and after taxes) is not an indication of future performance. 0.0358 0.0422 0.0344 0.1771 0.079 0.0535 0.0385 0.0367 0.0588 0.0478 0.0316 0.0311 0.0654 Year-to-Date Return Highest Quarter Return -0.0357 Return Before Taxes Return After Taxes on Distributions Return After Taxes on Distributions and Sale of Fund Shares Barclays® U.S. MBS Index Institutional Class Institutional Class Institutional Class Return Before Taxes Return After Taxes on Distributions Return After Taxes on Distributions and Sale of Fund Shares Barclays® U.S. Intermediate Government/Credit Bond Index 2012-10-30 2012-10-30 <div style="display:none">~ http://www.fidelity.com/role/ScheduleExpenseExampleFidelityAdvisorIntermediateBondFundInstitutional column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleExpenseExampleNoRedemptionFidelityAdvisorIntermediateBondFund column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleExpenseExampleFidelityAdvisorShortFixedIncomeFund column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleExpenseExampleNoRedemptionFidelityAdvisorShortFixedIncomeFund column period compact * ~</div> <div style="display:none">~ http://www.fidelity.com/role/ScheduleExpenseExampleFidelityAdvisorMortgageSecuritiesFund column period compact * ~</div> Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 0.75% or 0.25%, respectively. Declines over 6 years from 5.00% to 0%. On Class C shares redeemed less than one year after purchase. Purchases of $250,000 or more will not be subject to a front-end sales charge, but may be subject to a 0.50% contingent deferred sales charge (CDSC) if the intermediary has elected an upfront finder's fee at the time the shares are purchased, or a 0.75% CDSC if the shares purchased are recordkept in a Fidelity Advisor 401(k) Retirement Plan. Purchases of $250,000 or more will not be subject to a front-end sales charge but may be subject to a 0.25% CDSC if a finder's fee is paid at the time the shares are purchased. Declines over 3 years from 3.00% to 0%. On Class C shares redeemed less than one year after purchase. From October 9, 2002.