OMB APPROVAL OMB Number: 3235-0570 Expires: August 31, 2013 Estimated average burden hours per response.....18.9 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSR CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES 		Investment Company Act file number 811-21569 Pioneer Ibbotson Asset Allocation Series (Exact name of registrant as specified in charter) 60 State Street, Boston, MA 02109 (Address of principal executive offices) (ZIP code) Terrence J. Cullen, Pioneer Investment Management, Inc., 60 State Street, Boston, MA 02109 (Name and address of agent for service) Registrant's telephone number, including area code: (617) 742-7825 Date of fiscal year end: July 31 Date of reporting period: August 1, 2011 through July 31, 2012 Form N-CSR is to be used by management investment companies to file reports with the Commission not later than 10 days after the transmission to stockholders of any report that is required to be transmitted to stockholders under Rule 30e-1 under the Investment Company Act of 1940 (17 CFR 270.30e-1). The Commission may use the information provided on Form N-CSR in its regulatory, disclosure review, inspection, and policymaking roles. A registrant is required to disclose the information specified by Form N-CSR, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-CSR unless the Form displays a currently valid Office of Management and Budget ("OMB") control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. ss. 3507. ITEM 1. REPORTS TO SHAREOWNERS. Pioneer Ibbotson Asset Allocation Series -------------------------------------------------------------------------------- Annual Report | July 31, 2012 -------------------------------------------------------------------------------- Ticker Symbols: Conservative Moderate Growth Aggressive Allocation Allocation Allocation Allocation Class Fund Fund Fund Fund ----- ---- ---- ---- ---- A PIAVX PIALX GRAAX PIAAX B PIBVX PIBLX GRABX IALBX C PICVX PIDCX GRACX IALCX Y IBBCX IMOYX IBGYX IBAYX [LOGO] PIONEER Investments(R) visit us: us.pioneerinvestments.com Table of Contents Letter to Shareowners 2 Portfolio Management Discussion 4 Fund Reviews 8 Comparing Ongoing Fund Expenses 10 Prices and Distributions 18 Portfolio Summary & Performance Update 21 Schedule of Investments 41 Financial Statements 49 Notes to Financial Statements 71 Report of Independent Registered Public Accounting Firm 82 Trustees, Officers and Service Providers 83 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 1 President's Letter Dear Shareowner, The U.S. economy showed signs of an economic slowdown in the second quarter, reflecting higher savings by consumers and reduced spending by corporations, in large part due to concerns about both the U.S. outlook and the deteriorating situation in Europe. Some 40% - 45% of U.S. corporate earnings come from overseas, with a large portion of that from Europe. While large U.S. corporations generally remain in excellent financial health -- cash, borrowing capacity, and margins are all strong -- they are holding back on hiring and investments due to concerns about Europe, China, and U.S. regulations, fiscal policies, taxes, and politics. Many investors share those concerns, and are maintaining a cautious approach to the markets. Despite this tough backdrop, the markets had a surprisingly strong first half of 2012. The Standard & Poor's 500 Index returned 9.5% over the six months ended June 30, 2012. In the U.S. bond markets, interest rates generally declined, with riskier sectors faring the best. The broad bond market, as measured by the Barclays Capital Aggregate Bond Index, returned 2.4% during the same six-month period, while the high-yield bond market, as measured by the Bank of America Merrill Lynch High Yield Master II Index, returned 7.1%. Given the major macroeconomic and political issues facing the markets in the second half of the year, we certainly expect continuing volatility. But we also see some positive economic data that give us hope for better news in the second half of 2012. While the unemployment rate remains unacceptably high at over 8%, employment and incomes continue to trend upward. Lower oil prices have acted like an effective tax cut for consumers. Home construction, sales, and refinancings have increased, and auto sales are holding up as well. At Pioneer, we have long advocated the benefits of staying diversified* and investing for the long term. The strategy has generally performed well for many investors. Our advice, as always, is to work closely with a trusted financial advisor to discuss your goals and work together to develop an investment strategy that meets your individual needs. There is no single best strategy that works for every investor. * Diversification does not assure a profit or protect against loss in a declining market. 2 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Pioneer's investment professionals focus on finding good opportunities in both equity and bond markets using the same disciplined investment approach we have used since 1928. Our strategy is to identify undervalued individual securities with the greatest potential for success, carefully weighing risk against reward. Our teams of investment professionals continually monitor and analyze the relative valuations of different sectors and securities globally to help build portfolios that we believe can help you achieve your investment goals. We invite you to learn more about Pioneer and our time-tested approach to investing by consulting with your financial advisor or visiting us online at us.pioneerinvestments.com. We greatly appreciate your trust in us, and we thank you for investing with Pioneer. Sincerely, /s/ Daniel K. Kingsbury Daniel K. Kingsbury President and CEO Pioneer Investment Management USA, Inc. Any information in this shareowner report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of opinion as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 3 Portfolio Management Discussion | 7/31/12 In the following interview, portfolio manager Brian Huckstep, CFA, Ibbotson Associates, Inc., the funds' sub-adviser, discusses the market environment and investment strategies that applied to the funds in the Pioneer Ibbotson Allocation Series during the 12-month period ended July 31, 2012. Q How would you characterize the economic and market backdrop during the 12 months ended July 31, 2012? A As the period opened in August of 2011, markets were digesting the effects of rancorous negotiations over raising the U.S. debt ceiling that increased the possibility of a default on the U.S. government's debt. While the stalemate was resolved in early August of 2011, short of default, the failure of politicians to agree on any sort of sustainable glide path for the budget disheartened the markets. In addition, the raising of the debt ceiling was followed almost immediately by an historic downgrade of the United States' credit rating by Standard and Poor's. On the heels of the U.S. credit downgrade came fears that European leaders would not be able to take action commensurate with the scope of the sovereign-debt crisis plaguing the Continent. That, along with disappointing macroeconomic data, kindled heightened investor uncertainty and an abandonment of riskier assets in September 2011. At the same time, the overall U.S. bond market benefited from flows into Treasuries from rattled investors seeking a safe haven, which led to a decline in interest rates. As 2011 drew to a close, however, investors became encouraged by better- than-expected U.S. economic data, which eased concerns over a potential return to recession in 2012. In addition, the European Central Bank's (ECB's) unanticipated plan to make credit available to the region's troubled banks was viewed as a significant backstop to conditions in the euro zone. In combination, the factors led to a substantial recovery in investor sentiment and fueled a strong rebound in stocks late in 2011, a rebound which extended through March of 2012. In April and May of 2012, however, investor sentiment was again undercut by a steady flow of negative headlines. In particular, there were renewed concerns about the sovereign-debt crisis and the potential for a contraction of economic activity in Europe. Concerns about the potential for Greece to lead an exodus from the European Union (E.U.) were ongoing, and borrowing costs for the governments of larger and also heavily indebted countries, such as Spain and Italy, rose significantly. In the United States, while the housing market showed signs of firming, most other economic indicators, including employment data, softened during the spring of 2012, and the consensus growth outlook was 4 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 trimmed. In aggregate, the developments led to a decline in investor sentiment and yet another shift into sectors viewed as defensive. Despite the seemingly endless roller-coaster ride, U.S. stocks still finished the 12-month period ended July 31, 2012, on a positive note, supported in part by reasonable corporate earnings. For the full 12-month period, the U.S. equity market, as measured by the Standard & Poor's 500 Index (the S&P 500), returned 9.11%. International equities, on the other hand, were down significantly, returning -10.99%, as measured by the Morgan Stanley Capital International (MSCI) Europe, Australasia, Far East Index. Within the U.S. market, large-cap equities significantly outperformed their smaller-cap counterparts. Large caps, as measured by the Russell 1000 Index, returned 7.96% during the 12-month period, while small caps, as measured by the Russell 2000 Index, were nearly flat, returning 0.19% during the 12 months ended July 31, 2012. As for fixed income, the Barclays Capital Aggregate Bond Index, the most popular measure of the performance of the U.S. bond market, returned 7.25% for the 12 months ended July 31, 2012, led by solid performance from U.S. government-backed issues. Q What strategic considerations did you apply to the funds in allocating assets during the 12 months ended July 31, 2012, and how did your allocation decisions affect the funds' performance? A Within the U.S. equity portions of the funds, we have been favoring larger- cap stocks, while at the same time maintaining somewhat reduced exposure to smaller-cap stocks and real estate investment trusts (REITs). The current allocations reflect our view that large caps, overall, are not only better positioned to weather an uncertain economic and market climate, but also display the most attractive valuations within the U.S. equity market. While large caps notably outperformed small caps during the full 12-month period, REITs continued to outperform the broader equity market. We continue to believe, however, that U.S. property stocks are trading at valuations that may be difficult to sustain and that are hard to justify by fundamentals. For much of the 12-month period, we maintained an underweight to equities and an overweight to short-term bonds in the funds. The positioning decisions have been driven by our concerns over the subpar U.S. economic recovery as well as the continuing difficulties in Europe. The tilt to bonds in the funds acted as a slight constraint on returns during the 12-month period. Overall, our tactical allocations within the funds detracted from their performance during the 12-month period. In particular, in January of 2012 we implemented a tilt within the funds' overall equity sleeve in favor of international stocks over domestic stocks, given that we have viewed U.S. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 5 stock valuations as overstretched. The shift held back the funds' returns during the period, however, as investors became increasingly anxious about events in the euro zone in the second quarter of 2012 and inflows favored U.S. equity markets. Q What factors are you watching most closely as you determine your investment strategy for the funds going forward, and how were the funds positioned as of July 31, 2012? A On balance, within the overall strategic guidelines that apply to each fund's portfolio, positioning remains defensive and more focused on preserving capital. In that vein, we have been maintaining the moderate underweight to stocks overall. Within the equity portion of the funds, we believe that valuations of international stocks remain more attractive, and we have maintained the funds' overweights to international equities over U.S. equities. U.S. REITs continue to offer little medium-term upside in our view, and we believe there is significant downside risk in REITs based on current valuation levels. Bond yields have fallen significantly over the last year and investors, in aggregate, are already heavily allocated toward the asset class. That has led us to favor short-term bond vehicles as defensive assets in the funds' portfolios. Our reading of the most recent economic indicators does not lead us to anticipate a U.S. recession, despite unsatisfactory data in some areas, and we believe there is the potential for the data to surprise on the upside as the year progresses. That said, there are significant risks to our global economic outlook. The risks include a potential dissolution of the euro zone as well as slowing economic growth levels in China, and uncertainty over how the Chinese government will seek to manage the country's banking issues. At home, there is the looming package of tax increases and spending cuts (the so-called "fiscal cliff") scheduled to take place by default at the end of 2012, absent an end to the U.S. political stalemate on budgetary matters. In short, we believe that the environment remains exceptionally uncertain, and we are comfortable with our continued bias toward reducing risk in the funds. The immediate economic backdrop continues to reinforce our belief in the importance of maintaining a diversified* investment portfolio that is consistent with one's long-term objectives. We will continue to closely monitor the economic backdrop as we manage the portfolios within their strategic asset allocation guidelines. * Diversification does not assure a profit or protect against loss in a declining market. Please refer to the Schedule of Investments on pages 41-48 for a full listing of fund securities. 6 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 A fund's performance depends on the adviser's skill in determining the strategic asset class allocations, the mix of underlying Pioneer funds, as well as the performance of those underlying funds. The underlying funds' performance may be lower than the performance of the asset class that they were selected to represent. Stocks and bonds can decline due to adverse issuer, market, regulatory, or economic developments. International markets may be less liquid and can be more volatile than U.S. markets. These risk factors, including those associated with currency exchange rates, also apply to investments in international markets, all of which make investments in international markets more volatile and less liquid than investments in domestic markets. Some of the underlying funds can invest in either high-yield securities or small/emerging growth companies. Investments in these types of securities generally are subject to greater volatility than either higher-grade securities or more-established companies, respectively. These risks may increase share price volatility. Before making an investment in any fund, you should consider all the risks associated with it. Please see the Fund Reviews beginning on page 8 for information on specific weightings and performance for each of the four funds in the Pioneer Ibbotson Asset Allocation Series. Any information in this shareowner report regarding market or economic trends or the factors influencing each fund's historical or future performance are statements of opinion as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 7 Fund Reviews | 7/31/12 Pioneer Ibbotson Conservative Allocation Fund The Fund's Class A shares returned 1.85% at net asset value during the 12 months ended July 31, 2012, while the Standard & Poor's 500 Index (the S&P 500) returned 9.11% and the Barclays Capital Aggregate Bond Index (the Barclays Index) returned 7.25%. During the same period, the average return of the 320 mutual funds in Lipper's Mixed-Asset Target Allocation Conservative Funds category was 4.10%. As of July 31, 2012, the Fund was targeting an asset allocation of 29.0% equities and 71.0% fixed income, compared with the neutral allocation target of 30% equities and 70% fixed income. Within the fixed-income portion of the Fund, the largest holding at the end of the period was in Pioneer Short Term Income Fund, at 21.4% of assets, followed by Pioneer Bond Fund, at 20.0%. The Fund's next two largest positions were also in fixed-income funds, Pioneer Strategic Income Fund and Pioneer Global High Yield Fund, at 8.2% and 6.2% of assets, respectively. The Fund's largest equity position as of July 31, 2012, was in Pioneer International Value Fund, at 5.9% of assets. Pioneer Ibbotson Moderate Allocation Fund The Fund's Class A shares returned -0.27% at net asset value during the 12 months ended July 31, 2012, while the S&P 500 returned 9.11% and the Barclays Index returned 7.25%. During the same period, the average return of the 479 mutual funds in Lipper's Mixed-Asset Target Allocation Moderate Funds category was 3.19%. As of July 31, 2012, the Fund was targeting an asset allocation of 57.5% equities and 42.5% fixed income, compared with the neutral allocation target of 60% equities, 40% fixed income. Within the fixed-income portion of the Fund, the largest holding at the end of the period was in Pioneer Short Term Income Fund, at 12.4% of assets, followed by Pioneer Bond Fund, at 12.2%. Within the equity portion of the Fund, Pioneer International Value Fund was the largest holding, at 8.4% of assets on July 31, 2012. Pioneer Global Equity Fund was the Fund's next-largest equity holding, at 7.5% of assets, followed by Pioneer Mid Cap Value Fund, at 6.0%. Pioneer Ibbotson Growth Allocation Fund The Fund's Class A shares returned -1.31% at net asset value during the 12 months ended July 31, 2012, while the S&P 500 returned 9.11% and the Barclays Index returned 7.25%. During the same period, the average return of the 567 mutual funds in Lipper's Mixed-Target Allocation Growth Funds category was 2.30%. 8 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 As of July 31, 2012, the Fund was targeting an asset allocation of 70.5% equities and 29.5% fixed income, compared with the neutral allocation target of 75% equities and 25% fixed income. Within the equity portion of the Fund, Pioneer International Value Fund was the largest holding, at 11.1% of assets on July 31, 2012. Pioneer Global Equity Fund was the Fund's next-largest equity holding, at 8.1% of assets, followed by Pioneer Mid Cap Value Fund, at 6.8%. Within the fixed-income portion of the Fund, the largest holding as of July 31, 2012, was in Pioneer Bond Fund, at 9.8% of assets, followed by Pioneer Short Term Income Fund, at 8.3%. Pioneer Ibbotson Aggressive Allocation Fund The Fund's Class A shares returned -3.06% at net asset value during the 12 months ended July 31, 2012, while the S&P 500 returned 9.11% and the Barclays Index returned 7.25%. During the same period, the average return of the 814 mutual funds in Lipper's Multi-Cap Core Funds category was 1.61%. As of July 31, 2012, the Fund was targeting an asset allocation of 84.5% equities and 15.5% fixed income, compared with the neutral allocation target of 90% equities and 10% fixed income. Within the equity portion of the Fund, Pioneer International Value Fund was the largest holding, at 15.7% of assets on July 31, 2012. Pioneer Mid Cap Value Fund was the Fund's next-largest equity holding, at 10.3% of assets, followed by Pioneer Global Equity Fund, at 9.6%. The Fund's largest fixed-income position as of July 31, 2012, was in Pioneer Bond Fund, at 6.4% of assets. Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Any information in this shareowner report regarding market or economic trends or the factors influencing each fund's historical or future performance are statements of opinion as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 9 Comparing Ongoing Fund Expenses Pioneer Ibbotson Conservative Allocation Fund As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value [divided by] $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer Ibbotson Conservative Allocation Fund Based on actual returns from February 1, 2012 through July 31, 2012. -------------------------------------------------------------------------------- Share Class A B C Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 $1,000.00 Value on 2/1/12 -------------------------------------------------------------------------------- Ending Account Value $1,019.93 $1,016.40 $1,016.58 $1,009.96 (after expenses) on 7/31/12 -------------------------------------------------------------------------------- Expenses Paid $7.43 $11.93 $11.33 $14.79 During Period* -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. These combined totals were 1.48%, 2.38%, 2.26% and 2.96% for Class A, Class B, Class C and Class Y shares, respectively. These combined ratios were multiplied by the average account value over the period, and then multiplied by 182/366 (to reflect the one-half year period) to calculate the "Expenses Paid During Period" in the table above. 10 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Ibbotson Conservative Allocation Fund Based on a hypothetical 5% per year return before expenses, reflecting the period from February 1, 2012 through July 31, 2012. -------------------------------------------------------------------------------- Share Class A B C Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 $1,000.00 Value on 2/1/12 -------------------------------------------------------------------------------- Ending Account Value $1,017.50 $1,013.03 $1,013.63 $1,010.14 (after expenses) on 7/31/12 -------------------------------------------------------------------------------- Expenses Paid $7.42 $11.91 $11.31 $14.79 During Period* -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. These combined totals were 1.48%, 2.38%, 2.26% and 2.96% for Class A, Class B, Class C and Class Y shares, respectively. These combined ratios were multiplied by the average account value over the period, and then multiplied by 182/366 (to reflect the one-half year period) to calculate the "Expenses Paid During Period" in the table above. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 11 Comparing Ongoing Fund Expenses Pioneer Ibbotson Moderate Allocation Fund As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value [divided by] $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer Ibbotson Moderate Allocation Fund Based on actual returns from February 1, 2012 through July 31, 2012. -------------------------------------------------------------------------------- Share Class A B C Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 $1,000.00 Value on 2/1/12 -------------------------------------------------------------------------------- Ending Account Value $1,010.64 $1,008.04 $1,007.13 $1,012.45 (after expenses) on 7/31/12 -------------------------------------------------------------------------------- Expenses Paid $7.50 $11.48 $10.93 $5.80 During Period* -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. These combined totals were 1.50%, 2.30%, 2.19% and 1.16% for Class A, Class B, Class C and Class Y shares, respectively. These combined ratios were multiplied by the average account value over the period, and then multiplied by 182/366 (to reflect the one-half year period) to calculate the "Expenses Paid During Period" in the table above. 12 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Ibbotson Moderate Allocation Fund Based on a hypothetical 5% per year return before expenses, reflecting the period from February 1, 2012 through July 31, 2012. -------------------------------------------------------------------------------- Share Class A B C Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 $1,000.00 Value on 2/1/12 -------------------------------------------------------------------------------- Ending Account Value $1,017.40 $1,013.43 $1,013.97 $1,019.10 (after expenses) on 7/31/12 -------------------------------------------------------------------------------- Expenses Paid $7.52 $11.51 $10.97 $5.82 During Period* -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. These combined totals were 1.50%, 2.30%, 2.19% and 1.16% for Class A, Class B, Class C and Class Y shares, respectively. These combined ratios were multiplied by the average account value over the period, and then multiplied by 182/366 (to reflect the one-half year period) to calculate the "Expenses Paid During Period" in the table above. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 13 Comparing Ongoing Fund Expenses Pioneer Ibbotson Growth Allocation Fund As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value [divided by] $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer Ibbotson Growth Allocation Fund Based on actual returns from February 1, 2012 through July 31, 2012. -------------------------------------------------------------------------------- Share Class A B C Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 $1,000.00 Value on 2/1/12 -------------------------------------------------------------------------------- Ending Account Value $1,007.45 $1,004.20 $1,004.92 $1,008.25 (after expenses) on 7/31/12 -------------------------------------------------------------------------------- Expenses Paid $7.89 $11.91 $11.37 $6.59 During Period* -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. These combined totals were 1.58%, 2.39%, 2.28% and 1.32% for Class A, Class B, Class C and Class Y shares, respectively. These combined ratios were multiplied by the average account value over the period, and then multiplied by 182/366 (to reflect the one-half year period) to calculate the "Expenses Paid During Period" in the table above. 14 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Ibbotson Growth Allocation Fund Based on a hypothetical 5% per year return before expenses, reflecting the period from February 1, 2012 through July 31, 2012. -------------------------------------------------------------------------------- Share Class A B C Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 $1,000.00 Value on 2/1/12 -------------------------------------------------------------------------------- Ending Account Value $1,017.01 $1,012.98 $1,013.53 $1,018.30 (after expenses) on 7/31/12 -------------------------------------------------------------------------------- Expenses Paid $7.92 $11.96 $11.41 $6.62 During Period* -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. These combined totals were 1.58%, 2.39%, 2.28% and 1.32% for Class A, Class B, Class C and Class Y shares, respectively. These combined ratios were multiplied by the average account value over the period, and then multiplied by 182/366 (to reflect the one-half year period) to calculate the "Expenses Paid During Period" in the table above. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 15 Comparing Ongoing Fund Expenses Pioneer Ibbotson Aggressive Allocation Fund As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value [divided by] $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer Ibbotson Aggressive Allocation Fund Based on actual returns from February 1, 2012 through July 31, 2012. -------------------------------------------------------------------------------- Share Class A B C Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 $1,000.00 Value on 2/1/12 -------------------------------------------------------------------------------- Ending Account Value $999.07 $996.07 $996.07 $1,000.94 (after expenses) on 7/31/12 -------------------------------------------------------------------------------- Expenses Paid $8.45 $12.36 $11.96 $6.97 During Period* -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. These combined totals were 1.70%, 2.49%, 2.41% and 1.40% for Class A, Class B, Class C and Class Y shares, respectively. These combined ratios were multiplied by the average account value over the period, and then multiplied by 182/366 (to reflect the one-half year period) to calculate the "Expenses Paid During Period" in the table above. 16 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Ibbotson Aggressive Allocation Fund Based on a hypothetical 5% per year return before expenses, reflecting the period from February 1, 2012 through July 31, 2012. -------------------------------------------------------------------------------- Share Class A B C Y -------------------------------------------------------------------------------- Beginning Account $1,000.00 $1,000.00 $1,000.00 $1,000.00 Value on 2/1/12 -------------------------------------------------------------------------------- Ending Account Value $1,016.41 $1,012.48 $1,012.88 $1,017.90 (after expenses) on 7/31/12 -------------------------------------------------------------------------------- Expenses Paid $8.52 $12.46 $12.06 $7.02 During Period* -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. These combined totals were 1.70%, 2.49%, 2.41% and 1.40% for Class A, Class B, Class C and Class Y shares, respectively. These combined ratios were multiplied by the average account value over the period, and then multiplied by 182/366 (to reflect the one-half year period) to calculate the "Expenses Paid During Period" in the table above. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 17 Prices and Distributions | 7/31/12 Net Asset Value per Share -------------------------------------------------------------------------------- Conservative Allocation Fund --------------------------------------------- Class 7/31/12 7/31/11 --------------------------------------------- A $10.73 $10.85 --------------------------------------------- B $10.51 $10.61 --------------------------------------------- C $10.44 $10.56 --------------------------------------------- Y $10.21 $10.41 --------------------------------------------- Moderate Allocation Fund --------------------------------------------- Class 7/31/12 7/31/11 --------------------------------------------- A $10.46 $10.74 --------------------------------------------- B $10.04 $10.26 --------------------------------------------- C $9.77 $10.07 --------------------------------------------- Y $10.58 $10.88 --------------------------------------------- Growth Allocation Fund --------------------------------------------- Class 7/31/12 7/31/11 --------------------------------------------- A $10.75 $11.09 --------------------------------------------- B $9.52 $9.80 --------------------------------------------- C $10.18 $10.50 --------------------------------------------- Y $10.95 $11.45 --------------------------------------------- Aggressive Allocation Fund --------------------------------------------- Class 7/31/12 7/31/11 --------------------------------------------- A $10.60 $11.07 --------------------------------------------- B $9.95 $10.35 --------------------------------------------- C $10.07 $10.50 --------------------------------------------- Y $10.65 $11.24 --------------------------------------------- 18 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Distributions per Share: 8/1/11-7/31/12 -------------------------------------------------------------------------------- Conservative Allocation Fund ------------------------------------------------------------------------ Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains ------------------------------------------------------------------------ A $0.3065 $-- $-- ------------------------------------------------------------------------ B $0.2021 $-- $-- ------------------------------------------------------------------------ C $0.2320 $-- $-- ------------------------------------------------------------------------ Y $0.2267 $-- $-- ------------------------------------------------------------------------ Moderate Allocation Fund ------------------------------------------------------------------------ Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains ------------------------------------------------------------------------ A $0.2388 $-- $-- ------------------------------------------------------------------------ B $0.1132 $-- $-- ------------------------------------------------------------------------ C $0.1834 $-- $-- ------------------------------------------------------------------------ Y $0.2851 $-- $-- ------------------------------------------------------------------------ Growth Allocation Fund ------------------------------------------------------------------------ Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains ------------------------------------------------------------------------ A $0.1853 $-- $-- ------------------------------------------------------------------------ B $0.0795 $-- $-- ------------------------------------------------------------------------ C $0.1142 $-- $-- ------------------------------------------------------------------------ Y $0.2272 $-- $-- ------------------------------------------------------------------------ Aggressive Allocation Fund ------------------------------------------------------------------------ Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains ------------------------------------------------------------------------ A $0.1251 $-- $-- ------------------------------------------------------------------------ B $0.0140 $-- $-- ------------------------------------------------------------------------ C $0.0483 $-- $-- ------------------------------------------------------------------------ Y $0.1598 $-- $-- ------------------------------------------------------------------------ Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 19 Prices and Distributions | 7/31/12 (continued) The Standard & Poor's 500 Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Barclays Capital Aggregate Bond Index is a measure of the U.S. bond market. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. It is not possible to invest directly in an index. The indices defined here pertain to the "Value of $10,000 Investment" and "Value of $5 Million Investment" charts on pages 22-25, 27-30, 32-35 and 37-40. 20 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Portfolio Summary | 7/31/12 Pioneer Ibbotson Conservative Allocation Fund Target Asset Allocations -------------------------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A PIE CHART IN THE PRINTED MATERIAL] Fixed Income 70% Equity 30% Short Term Bonds 27.00% ----------------------------------------- Domestic Corporate Bonds 17.00 ----------------------------------------- Cash & Cash Equivalents 13.00 ----------------------------------------- High-Yield Corporate Bonds 13.00 ----------------------------------------- Large Cap Growth 9.00 ----------------------------------------- Large Cap Value 9.00 ----------------------------------------- International Equities 8.00 ----------------------------------------- Mid/Small Cap Growth 2.00 ----------------------------------------- Mid/Small Cap Value 2.00 ----------------------------------------- Actual Portfolio Holdings (based on total portfolio) -------------------------------------------------------------------------------- U.S. Stocks International Stocks --------------------------------------------------------------------------------------------------------------- Pioneer Absolute Return Credit Fund Class Y 4.23% Pioneer International Value Fund Class Y 5.89% --------------------------------------------------------------------------------------------------------------- Pioneer Fund Class Y 3.45 Pioneer Global Equity Fund Class Y 3.94 --------------------------------------------------------------------------------------------------------------- Pioneer Disciplined Value Fund Class Y 2.46 Pioneer Emerging Markets Fund Class Y 1.03 --------------------------------------------------------------------------------------------------------------- Pioneer Fundamental Growth Fund Class Y 2.15 Bonds --------------------------------------------------------------------------------------------------------------- Pioneer Disciplined Growth Fund Class Y 2.14 Pioneer Short Term Income Fund Class Y 21.41% --------------------------------------------------------------------------------------------------------------- Pioneer Research Fund Class Y 2.14 Pioneer Bond Fund Class Y 20.01 --------------------------------------------------------------------------------------------------------------- Pioneer Fundamental Value Fund Class Y 2.14 Pioneer Strategic Income Fund Class Y 8.17 --------------------------------------------------------------------------------------------------------------- Pioneer Mid Cap Value Fund Class Y 2.09 Pioneer Global High Yield Fund Class Y 6.24 --------------------------------------------------------------------------------------------------------------- Pioneer Equity Income Fund Class Y 1.35 Pioneer High Yield Fund Class Y 4.10 --------------------------------------------------------------------------------------------------------------- Pioneer Select Mid Cap Growth Fund Class Y 1.05 Pioneer Global Aggregate Bond Fund 2.11 Class Y --------------------------------------------------------------------------------------------------------------- Pioneer Multi-Asset Ultrashort Income Fund 1.04 Pioneer Floating Rate Fund Class Y 1.05 Class Y --------------------------------------------------------------------------------------------------------------- Pioneer Growth Opportunities Fund Class Y 1.04 --------------------------------------------------------------------------------------------------------------- Pioneer Real Estate Shares Class Y 0.77 --------------------------------------------------------------------------------------------------------------- This list excludes temporary cash investments and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 21 Performance Update | 7/31/12 Class A Shares Pioneer Ibbotson Conservative Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Ibbotson Conservative Allocation Fund at public offering price, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ------------------------------------------------------------------------- Public Net Asset Offering Period Value (NAV) Price (POP) ------------------------------------------------------------------------- Life-of-Class (5/12/05) 4.09% 3.24% 5 Years 2.89 1.68 1 Year 1.85 -4.07 ------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ------------------------------------------------------------------------- Gross Net ------------------------------------------------------------------------- 1.46% 1.44% ------------------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Ibbotson Barclays Capital Conservative Allocation Standard & Poor's 500 Aggregate Bond Fund Index Index 5/05 $ 9,425 $10,000 $10,000 9,599 10,387 9,963 7/06 9,919 10,945 10,108 10,800 12,710 10,672 7/08 10,490 11,300 11,329 10,024 9,046 12,217 7/10 11,215 10,298 13,306 12,230 12,322 13,896 7/12 12,456 13,444 14,904 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 5.75% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects contractual expense limitations currently in effect through December 1, 2013, for Class A shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 22 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Performance Update | 7/31/12 Class B Shares Pioneer Ibbotson Conservative Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Ibbotson Conservative Allocation Fund, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ----------------------------------------------------------------- If If Period Held Redeemed ----------------------------------------------------------------- Life-of-Class (5/12/05) 3.19% 3.19% 5 Years 2.00 2.00 1 Year 1.04 -2.92 ----------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ----------------------------------------------------------------- Gross ----------------------------------------------------------------- 2.30% ----------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Ibbotson Barclays Capital Conservative Allocation Standard & Poor's 500 Aggregate Bond Fund Index Index 5/05 $10,000 $10,000 $10,000 10,178 10,387 9,963 7/06 10,409 10,945 10,108 11,250 12,710 10,672 7/08 10,832 11,300 11,329 10,257 9,046 12,217 7/10 11,364 10,298 13,306 12,290 12,322 13,896 7/12 12,419 13,444 14,904 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. "If Redeemed" returns reflect the deduction of applicable contingent deferred sales charge (CDSC). The maximum CDSC for Class B shares is 4% and declines over five years. For more complete information, please see the prospectus. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 23 Performance Update | 7/31/12 Class C Shares Pioneer Ibbotson Conservative Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Ibbotson Conservative Allocation Fund, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ----------------------------------------------------------------- If If Period Held Redeemed ----------------------------------------------------------------- Life-of-Class (5/12/05) 3.19% 3.19% 5 Years 2.02 2.02 1 Year 1.16 1.16 ----------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ----------------------------------------------------------------- Gross ----------------------------------------------------------------- 2.21% ----------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Ibbotson Barclays Capital Conservative Allocation Standard & Poor's 500 Aggregate Bond Fund Index Index 5/05 $10,000 $10,000 $10,000 10,168 10,387 9,963 7/06 10,419 10,945 10,108 11,253 12,710 10,672 7/08 10,844 11,300 11,329 10,244 9,046 12,217 7/10 11,362 10,298 13,306 12,291 12,322 13,896 7/12 12,433 13,444 14,904 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 24 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Performance Update | 7/31/12 Class Y Shares Pioneer Ibbotson Conservative Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Pioneer Ibbotson Conservative Allocation Fund, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ----------------------------------------------------------------- If If Period Held Redeemed ----------------------------------------------------------------- Life-of-Class (5/12/05)* 2.86% 2.86% 5 Years 1.12 1.12 1 Year 0.34 0.34 ----------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ----------------------------------------------------------------- Gross ----------------------------------------------------------------- 1.48% ----------------------------------------------------------------- * Inception date of Class A shares. [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Ibbotson Barclays Capital Conservative Allocation Standard & Poor's 500 Aggregate Bond Fund Index Index 5/05 $5,000,000 $5,000,000 $5,000,000 5,094,059 5,193,293 4,981,499 7/06 5,268,849 5,472,488 5,054,204 5,738,328 6,354,929 5,336,140 7/08 5,541,848 5,650,115 5,664,329 4,950,847 4,522,973 6,108,716 7/10 5,539,507 5,149,147 6,652,993 6,047,788 6,160,851 6,948,116 7/12 6,068,113 6,721,856 7,452,144 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Performance shown for periods prior to the inception of the Fund's Class Y shares on October 5, 2005, reflects the NAV performance of the Fund's Class A shares. The performance does not reflect differences in expenses, including the Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares are generally higher than those of Class Y shares, the performance for Class Y shares prior to their inception would have been higher than the performance shown. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 25 Portfolio Summary | 7/31/12 Pioneer Ibbotson Moderate Allocation Fund Target Asset Allocations -------------------------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A PIE CHART IN THE PRINTED MATERIAL] Equity 60% Fixed Income 40% Short Term Bonds 17.00% -------------------------------------------------- Large Cap Growth 15.50 -------------------------------------------------- Large Cap Value 15.50 -------------------------------------------------- International Equities 12.00 -------------------------------------------------- Domestic Corporate Bonds 9.00 -------------------------------------------------- High-Yield Corporate Bonds 8.00 -------------------------------------------------- Mid/Small Cap Growth 6.00 -------------------------------------------------- Cash & Cash Equivalents 6.00 -------------------------------------------------- Mid/Small Cap Value 6.00 -------------------------------------------------- Real Estate Investment Trust (REIT) 3.00 -------------------------------------------------- Emerging Markets 2.00 -------------------------------------------------- Actual Portfolio Holdings (based on total portfolio) -------------------------------------------------------------------------------- U.S. Stocks International Stocks --------------------------------------------------------------------------------------------------------------- Pioneer Mid Cap Value Fund Class Y 5.95% Pioneer International Value Fund Class Y 8.37% --------------------------------------------------------------------------------------------------------------- Pioneer Fund Class Y 5.24 Pioneer Global Equity Fund Class Y 7.47 --------------------------------------------------------------------------------------------------------------- Pioneer Fundamental Growth Fund Class Y 4.09 Pioneer Emerging Markets Fund Class Y 3.80 --------------------------------------------------------------------------------------------------------------- Pioneer Disciplined Value Fund Class Y 4.06 Bonds --------------------------------------------------------------------------------------------------------------- Pioneer Disciplined Growth Fund Class Y 3.97 Pioneer Short Term Income Fund Class Y 12.42% --------------------------------------------------------------------------------------------------------------- Pioneer Fundamental Value Fund Class Y 3.91 Pioneer Bond Fund Class Y 12.20 --------------------------------------------------------------------------------------------------------------- Pioneer Growth Opportunities Fund Class Y 3.19 Pioneer Global High Yield Fund Class Y 3.99 --------------------------------------------------------------------------------------------------------------- Pioneer Oak Ridge Small Cap Growth Fund 3.05 Pioneer Strategic Income Fund Class Y 2.39 Class Y --------------------------------------------------------------------------------------------------------------- Pioneer Absolute Return Credit Fund Class Y 2.69 Pioneer High Yield Fund Class Y 2.21 --------------------------------------------------------------------------------------------------------------- Pioneer Equity Income Fund Class Y 2.55 Pioneer Global Aggregate Bond Fund 1.61 Class Y --------------------------------------------------------------------------------------------------------------- Pioneer Research Fund Class Y 2.22 --------------------------------------------------------------------------------------------------------------- Pioneer Select Mid Cap Growth Fund Class Y 2.17 --------------------------------------------------------------------------------------------------------------- Pioneer Real Estate Shares Class Y 1.68 --------------------------------------------------------------------------------------------------------------- Pioneer Multi-Asset Ultrashort Income Fund 0.76 Class Y --------------------------------------------------------------------------------------------------------------- This list excludes temporary cash investments and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 26 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Performance Update | 7/31/12 Class A Shares Pioneer Ibbotson Moderate Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Ibbotson Moderate Allocation Fund at public offering price, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ------------------------------------------------------------------------- Public Net Asset Offering Period Value (NAV) Price (POP) ------------------------------------------------------------------------- Life-of-Class (8/9/04) 4.46% 3.69% 5 Years 0.94 -0.24 1 Year -0.27 -6.05 ------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ------------------------------------------------------------------------- Gross ------------------------------------------------------------------------- 1.47% ------------------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Barclays Capital Pioneer Ibbotson Standard & Poor's 500 Aggregate Bond Moderate Allocation Fund Index Index 8/04 $ 9,425 $10,000 $10,000 10,570 11,359 10,283 7/06 11,097 11,970 10,433 12,493 13,900 11,015 7/08 11,560 12,358 11,692 10,266 9,893 12,610 7/10 11,627 11,262 13,733 13,128 13,475 14,342 7/12 13,092 14,702 15,383 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of the maximum 5.75% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 27 Performance Update | 7/31/12 Class B Shares Pioneer Ibbotson Moderate Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Ibbotson Moderate Allocation Fund, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ----------------------------------------------------------------- If If Period Held Redeemed ----------------------------------------------------------------- Life-of-Class (8/9/04) 3.22% 3.22% 5 Years 0.13 0.13 1 Year -0.99 -4.90 ----------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ----------------------------------------------------------------- Gross Net ----------------------------------------------------------------- 2.29% 2.28% ----------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Barclays Capital Pioneer Ibbotson Standard & Poor's 500 Aggregate Bond Moderate Allocation Fund Index Index 8/04 $10,000 $10,000 $10,000 10,978 11,359 10,283 7/06 11,417 11,970 10,433 12,753 13,900 11,015 7/08 11,691 12,358 11,692 10,311 9,893 12,610 7/10 11,588 11,262 13,733 12,967 13,475 14,342 7/12 12,838 14,702 15,383 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. "If Redeemed" returns reflect the deduction of applicable contingent deferred sales charge (CDSC). The maximum CDSC for Class B shares is 4% and declines over five years. For more complete information, please see the prospectus. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects contractual expense limitations currently in effect through December 1, 2013, for Class B shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 28 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Performance Update | 7/31/12 Class C Shares Pioneer Ibbotson Moderate Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Ibbotson Moderate Allocation Fund, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ----------------------------------------------------------------- If If Period Held Redeemed ----------------------------------------------------------------- Life-of-Class (8/9/04) 3.18% 3.18% 5 Years 0.18 0.18 1 Year -1.08 -1.08 ----------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ----------------------------------------------------------------- Gross ----------------------------------------------------------------- 2.16% ----------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Barclays Capital Pioneer Ibbotson Standard & Poor's 500 Aggregate Bond Moderate Allocation Fund Index Index 8/04 $10,000 $10,000 $10,000 11,122 11,359 10,283 7/06 11,573 11,970 10,433 12,941 13,900 11,015 7/08 11,882 12,358 11,692 10,474 9,893 12,610 7/10 11,776 11,262 13,733 13,203 13,475 14,342 7/12 13,061 14,702 15,383 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 29 Performance Update | 7/31/12 Class Y Shares Pioneer Ibbotson Moderate Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Pioneer Ibbotson Moderate Allocation Fund, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ----------------------------------------------------------------- If If Period Held Redeemed ----------------------------------------------------------------- Life-of-Class (8/9/04)* 4.93% 4.93% 5 Years 1.50 1.50 1 Year 0.00 0.00 ----------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ----------------------------------------------------------------- Gross ----------------------------------------------------------------- 1.08% ----------------------------------------------------------------- * Inception date of Class A shares. [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Barclays Capital Pioneer Ibbotson Standard & Poor's 500 Aggregate Bond Moderate Allocation Fund Index Index 8/04 $5,000,000 $5,000,000 $5,000,000 5,606,494 5,679,459 5,141,454 7/06 5,913,111 5,984,789 5,216,493 6,680,624 6,949,838 5,507,482 7/08 6,206,468 6,179,044 5,846,209 5,580,029 4,946,386 6,304,865 7/10 6,347,323 5,631,178 6,866,618 7,195,925 6,737,592 7,171,216 7/12 7,195,817 7,351,114 7,691,429 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Performance shown for periods prior to the inception of the Fund's Class Y shares on September 23, 2005, reflects the NAV performance of the Fund's Class A shares. The performance does not reflect differences in expenses, including the Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares are generally higher than those of Class Y shares, the performance for Class Y shares prior to their inception would have been higher than the performance shown. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 30 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Portfolio Summary | 7/31/12 Pioneer Ibbotson Growth Allocation Fund Target Asset Allocations -------------------------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A PIE CHART IN THE PRINTED MATERIAL] Equity 75% Fixed Income 25% Large Cap Value 17.50% -------------------------------------------------- Large Cap Growth 16.50 -------------------------------------------------- International Equities 16.00 -------------------------------------------------- Short Term Bonds 12.50 -------------------------------------------------- Mid/Small Cap Growth 8.50 -------------------------------------------------- Mid/Small Cap Value 8.50 -------------------------------------------------- Domestic Corporate Bonds 7.50 -------------------------------------------------- High-Yield Corporate Bonds 5.00 -------------------------------------------------- Emerging Markets 4.00 -------------------------------------------------- Real Estate Investment Trust (REIT) 4.00 -------------------------------------------------- Actual Portfolio Holdings (based on total portfolio) -------------------------------------------------------------------------------- U.S. Stocks International Stocks --------------------------------------------------------------------------------------------------------------- Pioneer Mid Cap Value Fund Class Y 6.82% Pioneer International Value Fund Class Y 11.06% --------------------------------------------------------------------------------------------------------------- Pioneer Fundamental Growth Fund Class Y 5.55 Pioneer Global Equity Fund Class Y 8.07 --------------------------------------------------------------------------------------------------------------- Pioneer Fund Class Y 4.97 Pioneer Emerging Markets Fund Class Y 5.22 --------------------------------------------------------------------------------------------------------------- Pioneer Disciplined Value Fund Class Y 4.89 Bonds --------------------------------------------------------------------------------------------------------------- Pioneer Disciplined Growth Fund Class Y 4.74 Pioneer Bond Fund Class Y 9.76% --------------------------------------------------------------------------------------------------------------- Pioneer Fundamental Value Fund Class Y 4.17 Pioneer Short Term Income Fund Class Y 8.29 --------------------------------------------------------------------------------------------------------------- Pioneer Growth Opportunities Fund Class Y 4.06 Pioneer Strategic Income Fund Class Y 2.20 --------------------------------------------------------------------------------------------------------------- Pioneer Equity Income Fund Class Y 3.79 Pioneer Global High Yield Fund Class Y 2.08 --------------------------------------------------------------------------------------------------------------- Pioneer Research Fund Class Y 3.29 Pioneer Global Aggregate Bond Fund 1.70 Class Y --------------------------------------------------------------------------------------------------------------- Pioneer Oak Ridge Small Cap Growth Fund 2.94 Pioneer High Yield Fund Class Y 0.85 Class Y --------------------------------------------------------------------------------------------------------------- Pioneer Real Estate Shares Class Y 2.81 --------------------------------------------------------------------------------------------------------------- Pioneer Select Mid Cap Growth Fund Class Y 2.72 --------------------------------------------------------------------------------------------------------------- Pioneer Independence Fund Class Y 0.00* --------------------------------------------------------------------------------------------------------------- Pioneer Oak Ridge Large Cap Growth Fund 0.00* Class Y --------------------------------------------------------------------------------------------------------------- Pioneer Value Fund Class Y 0.00* --------------------------------------------------------------------------------------------------------------- This list excludes temporary cash investments and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. * Rounds to less than 0.01%. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 31 Performance Update | 7/31/12 Class A Shares Pioneer Ibbotson Growth Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Ibbotson Growth Allocation Fund at public offering price, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ------------------------------------------------------------------------- Public Net Asset Offering Period Value (NAV) Price (POP) ------------------------------------------------------------------------- Life-of-Class (8/9/04) 4.44% 3.67% 5 Years -0.34 -1.51 1 Year -1.31 -7.01 ------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ------------------------------------------------------------------------- Gross ------------------------------------------------------------------------- 1.57% ------------------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of 10,000 Investment Pioneer Ibbotson Growth Barclays Capital Allocation Standard & Poor's 500 Aggregate Bond Fund Index Index 8/04 $ 9,425 $10,000 $10,000 10,892 11,359 10,283 7/06 11,577 11,970 10,433 13,281 13,900 11,015 7/08 11,969 12,358 11,692 10,115 9,893 12,610 7/10 11,520 11,262 13,733 13,231 13,475 14,342 7/12 13,058 14,702 15,383 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of the maximum 5.75% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 32 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Performance Update | 7/31/12 Class B Shares Pioneer Ibbotson Growth Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Ibbotson Growth Allocation Fund, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ----------------------------------------------------------------- If If Period Held Redeemed ----------------------------------------------------------------- Life-of-Class (8/9/04) 2.54% 2.54% 5 Years -1.10 -1.10 1 Year -2.01 -5.89 ----------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ----------------------------------------------------------------- Gross Net ----------------------------------------------------------------- 2.42% 2.38% ----------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of 10,000 Investment Pioneer Ibbotson Growth Barclays Capital Allocation Standard & Poor's 500 Aggregate Bond Fund Index Index 8/04 $10,000 $10,000 $10,000 11,046 11,359 10,283 7/06 11,657 11,970 10,433 13,250 13,900 11,015 7/08 11,838 12,358 11,692 9,938 9,893 12,610 7/10 11,233 11,262 13,733 12,795 13,475 14,342 7/12 12,538 14,702 15,383 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. "If Redeemed" returns reflect the deduction of applicable contingent deferred sales charge (CDSC). The maximum CDSC for Class B shares is 4% and declines over five years. For more complete information, please see the prospectus. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects contractual expense limitations currently in effect through December 1, 2013, for Class B shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 33 Performance Update | 7/31/12 Class C Shares Pioneer Ibbotson Growth Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Ibbotson Growth Allocation Fund, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ----------------------------------------------------------------- If If Period Held Redeemed ----------------------------------------------------------------- Life-of-Class (8/9/04) 3.32% 3.32% 5 Years -1.00 -1.00 1 Year -1.91 -1.91 ----------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ----------------------------------------------------------------- Gross ----------------------------------------------------------------- 2.27% ----------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of 10,000 Investment Pioneer Ibbotson Growth Barclays Capital Allocation Standard & Poor's 500 Aggregate Bond Fund Index Index 8/04 $10,000 $10,000 $10,000 11,310 11,359 10,283 7/06 11,933 11,970 10,433 13,575 13,900 11,015 7/08 12,158 12,358 11,692 10,203 9,893 12,610 7/10 11,537 11,262 13,733 13,164 13,475 14,342 7/12 12,913 14,702 15,383 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 34 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Performance Update | 7/31/12 Class Y Shares Pioneer Ibbotson Growth Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Pioneer Ibbotson Growth Allocation Fund, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ----------------------------------------------------------------- If If Period Held Redeemed ----------------------------------------------------------------- Life-of-Class (8/9/04)* 4.95% 4.95% 5 Years 0.24 0.24 1 Year -2.28 -2.28 ----------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ----------------------------------------------------------------- Gross ----------------------------------------------------------------- 1.17% ----------------------------------------------------------------- * Inception date of Class A shares. [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Ibbotson Growth Barclays Capital Allocation Standard & Poor's 500 Aggregate Bond Fund Index Index 8/04 $5,000,000 $5,000,000 $5,000,000 5,776,725 5,679,459 5,141,454 7/06 6,193,377 5,984,789 5,216,493 7,114,596 6,949,838 5,507,482 7/08 6,470,796 6,179,044 5,846,209 5,585,334 4,946,386 6,304,865 7/10 6,385,461 5,631,178 6,866,618 7,368,224 6,737,592 7,171,216 7/12 7,200,258 7,351,114 7,691,429 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Performance shown for periods prior to the inception of the Fund's Class Y shares on September 26, 2005, reflects the NAV performance of the Fund's Class A shares. The performance does not reflect differences in expenses, including the Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares are generally higher than those of Class Y shares, the performance for Class Y shares prior to their inception would have been higher than the performance shown. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 35 Portfolio Summary | 7/31/12 Pioneer Ibbotson Aggressive Allocation Fund Target Asset Allocations -------------------------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A PIE CHART IN THE PRINTED MATERIAL] Equity 90% Fixed Income 10% International Equities 21.00% -------------------------------------------------- Large Cap Growth 19.00 -------------------------------------------------- Large Cap Value 19.00 -------------------------------------------------- Mid/Small Cap Growth 10.50 -------------------------------------------------- Mid/Small Cap Value 10.50 -------------------------------------------------- Domestic Corporate Bonds 7.00 -------------------------------------------------- Real Estate Investment Trust (REIT) 5.00 -------------------------------------------------- Emerging Markets 5.00 -------------------------------------------------- Short Term Bond 3.00 -------------------------------------------------- Actual Portfolio Holdings (based on total portfolio) -------------------------------------------------------------------------------- U.S. Stocks International Stocks ---------------------------------------------------------------------------------------------------------------- Pioneer Mid Cap Value Fund Class Y 10.27% Pioneer International Value Fund Class Y 15.65% ---------------------------------------------------------------------------------------------------------------- Pioneer Fundamental Growth Fund Class Y 5.40 Pioneer Global Equity Fund Class Y 9.55 ---------------------------------------------------------------------------------------------------------------- Pioneer Fund Class Y 5.39 Pioneer Emerging Markets Fund Class Y 6.98 ---------------------------------------------------------------------------------------------------------------- Pioneer Disciplined Value Fund Class Y 4.89 Bonds ---------------------------------------------------------------------------------------------------------------- Pioneer Growth Opportunities Fund Class Y 4.40 Pioneer Bond Fund Class Y 6.40% ---------------------------------------------------------------------------------------------------------------- Pioneer Disciplined Growth Fund Class Y 4.27 Pioneer Strategic Income Fund Class Y 2.13 ---------------------------------------------------------------------------------------------------------------- Pioneer Fundamental Value Fund Class Y 4.11 Pioneer Short Term Income Fund Class Y 1.93 ---------------------------------------------------------------------------------------------------------------- Pioneer Real Estate Shares Class Y 4.06 ---------------------------------------------------------------------------------------------------------------- Pioneer Oak Ridge Small Cap Growth Fund 3.94 Class Y ---------------------------------------------------------------------------------------------------------------- Pioneer Equity Income Fund Class Y 3.90 ---------------------------------------------------------------------------------------------------------------- Pioneer Select Mid Cap Growth Fund Class Y 3.88 ---------------------------------------------------------------------------------------------------------------- Pioneer Research Fund Class Y 2.85 ---------------------------------------------------------------------------------------------------------------- This list excludes temporary cash investments and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 36 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Performance Update | 7/31/12 Class A Shares Pioneer Ibbotson Aggressive Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Ibbotson Aggressive Allocation Fund at public offering price, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ------------------------------------------------------------------------- Public Net Asset Offering Period Value (NAV) Price (POP) ------------------------------------------------------------------------- Life-of-Class (8/9/04) 4.24% 3.47% 5 Years -1.71 -2.87 1 Year -3.06 -8.67 ------------------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ------------------------------------------------------------------------- Gross ------------------------------------------------------------------------- 1.74% ------------------------------------------------------------------------ [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of 10,000 Investment Pioneer Ibbotson Barclays Capital Aggressive Allocation Standard & Poor's 500 Aggregate Bond Fund Index Index 8/04 $9,425 $10,000 $10,000 11,173 11,359 10,283 7/06 11,989 11,970 10,433 13,956 13,900 11,015 7/08 12,276 12,358 11,692 9,938 9,893 12,610 7/10 11,345 11,262 13,733 13,208 13,475 14,342 7/12 12,804 14,702 15,383 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of the maximum 5.75% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 37 Performance Update | 7/31/12 Class B Shares Pioneer Ibbotson Aggressive Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Ibbotson Aggressive Allocation Fund, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ----------------------------------------------------------------- If If Period Held Redeemed ----------------------------------------------------------------- Life-of-Class (8/9/04) 3.03% 3.03% 5 Years -2.47 -2.47 1 Year -3.72 -7.57 ----------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ----------------------------------------------------------------- Gross Net ----------------------------------------------------------------- 2.60% 2.53% ----------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of 10,000 Investment Pioneer Ibbotson Barclays Capital Aggressive Allocation Standard & Poor's 500 Aggregate Bond Fund Index Index 8/04 $10,000 $10,000 $10,000 11,690 11,359 10,283 7/06 12,434 11,970 10,433 14,361 13,900 11,015 7/08 12,534 12,358 11,692 10,066 9,893 12,610 7/10 11,397 11,262 13,733 13,165 13,475 14,342 7/12 12,675 14,702 15,383 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. "If Redeemed" returns reflect the deduction of applicable contingent deferred sales charge (CDSC). The maximum CDSC for Class B shares is 4% and declines over five years. For more complete information, please see the prospectus. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects contractual expense limitations currently in effect through December 1, 2013, for Class B shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 38 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Performance Update | 7/31/12 Class C Shares Pioneer Ibbotson Aggressive Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Ibbotson Aggressive Allocation Fund, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ----------------------------------------------------------------- If If Period Held Redeemed ----------------------------------------------------------------- Life-of-Class (8/9/04) 3.26% 3.26% 5 Years -2.40 -2.40 1 Year -3.61 -3.61 ----------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ----------------------------------------------------------------- Gross ----------------------------------------------------------------- 2.44% ----------------------------------------------------------------- [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of 10,000 Investment Pioneer Ibbotson Barclays Capital Aggressive Allocation Standard & Poor's 500 Aggregate Bond Fund Index Index 8/04 $10,000 $10,000 $10,000 11,563 11,359 10,283 7/06 12,299 11,970 10,433 14,221 13,900 11,015 7/08 12,429 12,358 11,692 9,979 9,893 12,610 7/10 11,302 11,262 13,733 13,069 13,475 14,342 7/12 12,597 14,702 15,383 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 39 Performance Update | 7/31/12 Class Y Shares Pioneer Ibbotson Aggressive Allocation Fund Investment Returns -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $5 million investment made in Pioneer Ibbotson Aggressive Allocation Fund, compared to that of the Standard & Poor's 500 Index and the Barclays Capital Aggregate Bond Index. Average Annual Total Returns (As of July 31, 2012) ----------------------------------------------------------------- If If Period Held Redeemed ----------------------------------------------------------------- Life-of-Class (8/9/04)* 4.53% 4.53% 5 Years -1.45 -1.45 1 Year -3.76 -3.76 ----------------------------------------------------------------- Expense Ratio (Per prospectus dated December 1, 2011) ----------------------------------------------------------------- Gross ----------------------------------------------------------------- 1.35% ----------------------------------------------------------------- * Inception date of Class A shares. [THE DATA BELOW IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $5 Million Investment Pioneer Ibbotson Barclays Capital Aggressive Allocation Standard & Poor's 500 Aggregate Bond Fund Index Index 8/04 $5,000,000 $5,000,000 $5,000,000 5,929,998 5,679,459 5,141,454 7/06 6,379,347 5,984,789 5,216,493 7,470,251 6,949,838 5,507,482 7/08 6,661,413 6,179,044 5,846,209 5,372,710 4,946,386 6,304,865 7/10 6,151,437 5,631,178 6,866,618 7,216,848 6,737,592 7,171,216 7/12 6,945,791 7,351,114 7,691,429 Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Performance shown for periods prior to the inception of the Fund's Class Y shares on September 23, 2005, reflects the NAV performance of the Fund's Class A shares. The performance does not reflect differences in expenses, including the Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares are generally higher than those of Class Y shares, the performance for Class Y shares prior to their inception would have been higher than the performance shown. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results shown reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 40 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Schedule of Investments | 7/31/12 Pioneer Ibbotson Conservative Allocation Fund ---------------------------------------------------------------------------------------- Shares Value ---------------------------------------------------------------------------------------- MUTUAL FUNDS -- 94.8% PIONEER FUNDS* -- 94.8% 260,971 Pioneer Absolute Return Credit Fund Class Y $ 2,539,244 1,232,963 Pioneer Bond Fund Class Y 12,021,392 69,949 Pioneer Cullen Value Fund Class Y 1,282,856 127,353 Pioneer Disciplined Growth Fund Class Y 1,287,542 171,527 Pioneer Disciplined Value Fund Class Y 1,476,849 25,329 Pioneer Emerging Markets Fund Class Y 617,019 29,515 Pioneer Equity Income Fund Class Y 811,970 91,392 Pioneer Floating Rate Fund Class Y 629,691 51,083 Pioneer Fund Class Y 2,072,958 98,410 Pioneer Fundamental Growth Fund Class Y 1,294,087 111,467 Pioneer Global Aggregate Bond Fund Class Y 1,268,494 249,168 Pioneer Global Equity Fund Class Y 2,364,603 389,879 Pioneer Global High Yield Fund Class Y 3,750,636 21,501 Pioneer Growth Opportunities Fund Class Y 624,186 248,164 Pioneer High Yield Fund Class Y 2,464,265 205,544 Pioneer International Value Fund Class Y 3,539,474 58,110 Pioneer Mid Cap Value Fund Class Y 1,258,092 62,498 Pioneer Multi-Asset Ultrashort Income Fund Class Y 627,476 18,643 Pioneer Real Estate Shares Class Y 464,386 122,519 Pioneer Research Fund Class Y 1,285,228 32,519 Pioneer Select Mid Cap Growth Fund Class Y 628,913 1,331,421 Pioneer Short Term Income Fund Class Y 12,861,529 443,966 Pioneer Strategic Income Fund Class Y 4,910,259 ---------------------------------------------------------------------------------------- TOTAL MUTUAL FUNDS (Cost $54,277,349) $60,081,149 ---------------------------------------------------------------------------------------- Principal Amount ---------------------------------------------------------------------------------------- TEMPORARY CASH INVESTMENT -- 4.9% TIME DEPOSIT -- 4.9% $ 3,122,846 HSBC Bank Grand Cayman, 0.03%, 8/1/12 $ 3,122,846 ---------------------------------------------------------------------------------------- TOTAL TIME DEPOSIT (Cost $3,122,846) $ 3,122,846 ---------------------------------------------------------------------------------------- TOTAL INVESTMENTS IN SECURITIES -- 99.7% (Cost $57,400,195) (a) $63,203,995 ---------------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- 0.3% $ 159,659 ---------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $63,363,654 ======================================================================================== * Affiliated funds managed by Pioneer Investment Management, Inc. The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 41 Schedule of Investments | 7/31/12 Pioneer Ibbotson Conservative Allocation Fund (continued) (a) At July 31, 2012, the net unrealized gain on investments based on cost for federal tax purposes of $58,375,558 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $ 5,846,799 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (1,018,362) ----------- Net unrealized gain $ 4,828,437 =========== Purchases and sales of securities (excluding temporary cash investments) for the year ended July 31, 2012 aggregated $12,123,076 and $11,717,729, respectively. Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels below. Highest priority is given to Level 1 inputs and lowest priority is given to Level 3. Level 1 -- quoted prices in active markets for identical securities Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.) Level 3 -- significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) The following is a summary of the inputs used as of July 31, 2012, in valuing the Fund's assets: ----------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total ----------------------------------------------------------------------------------------- Mutual Funds $60,081,149 $ -- $-- $60,081,149 Temporary Cash Investment -- 3,122,846 -- 3,122,846 ----------------------------------------------------------------------------------------- Total $60,081,149 $3,122,846 $-- $63,203,995 ========================================================================================= The accompanying notes are an integral part of these financial statements. 42 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Schedule of Investments | 7/31/12 Pioneer Ibbotson Moderate Allocation Fund ----------------------------------------------------------------------------------------- Shares Value ----------------------------------------------------------------------------------------- MUTUAL FUNDS -- 97.1% PIONEER FUNDS* -- 97.1% 520,922 Pioneer Absolute Return Credit Fund Class Y $ 5,068,569 2,354,173 Pioneer Bond Fund Class Y 22,953,183 400,536 Pioneer Cullen Value Fund Class Y 7,345,839 739,321 Pioneer Disciplined Growth Fund Class Y 7,474,535 885,956 Pioneer Disciplined Value Fund Class Y 7,628,084 293,382 Pioneer Emerging Markets Fund Class Y 7,146,796 174,594 Pioneer Equity Income Fund Class Y 4,803,072 243,002 Pioneer Fund Class Y 9,861,025 585,548 Pioneer Fundamental Growth Fund Class Y 7,699,957 266,852 Pioneer Global Aggregate Bond Fund Class Y 3,036,776 1,479,826 Pioneer Global Equity Fund Class Y 14,043,546 779,217 Pioneer Global High Yield Fund Class Y 7,496,068 206,619 Pioneer Growth Opportunities Fund Class Y 5,998,155 419,072 Pioneer High Yield Fund Class Y 4,161,382 914,157 Pioneer International Value Fund Class Y 15,741,777 517,071 Pioneer Mid Cap Value Fund Class Y 11,194,578 141,624 Pioneer Multi-Asset Ultrashort Income Fund Class Y 1,421,903 202,273 Pioneer Oak Ridge Small Cap Growth Fund Class Y 5,736,467 126,821 Pioneer Real Estate Shares Class Y 3,159,109 398,069 Pioneer Research Fund Class Y 4,175,741 211,321 Pioneer Select Mid Cap Growth Fund Class Y 4,086,953 2,419,243 Pioneer Short Term Income Fund Class Y 23,369,888 405,682 Pioneer Strategic Income Fund Class Y 4,486,847 ----------------------------------------------------------------------------------------- TOTAL MUTUAL FUNDS (Cost $163,818,337) $188,090,250 ----------------------------------------------------------------------------------------- Principal Amount ----------------------------------------------------------------------------------------- TEMPORARY CASH INVESTMENT -- 2.9% TIME DEPOSIT -- 2.9% $ 1,967,982 Bank Of New York Mellon Grand Cayman, 0.03%, 8/1/12 $ 1,967,982 3,613,968 Citibank London, 0.03%, 8/1/12 3,613,968 ----------------------------------------------------------------------------------------- TOTAL TIME DEPOSIT (Cost $5,581,950) $ 5,581,950 ----------------------------------------------------------------------------------------- TOTAL INVESTMENTS IN SECURITIES -- 100.0% (Cost $169,400,287) (a) $193,672,200 ----------------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- 0.0% $ 33,970 ----------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $193,706,170 ========================================================================================= * Affiliated funds managed by Pioneer Investment Management, Inc. The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 43 Schedule of Investments | 7/31/12 Pioneer Ibbotson Moderate Allocation Fund (continued) (a) At July 31, 2012, the net unrealized gain on investments based on cost for federal tax purposes of $172,377,923 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $21,294,277 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value -- ----------- Net unrealized gain $21,294,277 =========== Purchases and sales of securities (excluding temporary cash investments) for the year ended July 31, 2012 aggregated $18,208,951 and $36,472,433, respectively. Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels below. Highest priority is given to Level 1 inputs and lowest priority is given to Level 3. Level 1 -- quoted prices in active markets for identical securities Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.) Level 3 -- significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) The following is a summary of the inputs used as of July 31, 2012, in valuing the Fund's assets: ------------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total ------------------------------------------------------------------------------------------- Mutual Funds $188,090,250 $ -- $-- $188,090,250 Temporary Cash Investment -- 5,581,950 -- 5,581,950 ------------------------------------------------------------------------------------------- Total $188,090,250 $5,581,950 $-- $193,672,200 =========================================================================================== The accompanying notes are an integral part of these financial statements. 44 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Schedule of Investments | 7/31/12 Pioneer Ibbotson Growth Allocation Fund ----------------------------------------------------------------------------------------- Shares Value ----------------------------------------------------------------------------------------- MUTUAL FUNDS -- 99.3% PIONEER FUNDS* -- 99.3% 2,062,995 Pioneer Bond Fund Class Y $ 20,114,197 468,235 Pioneer Cullen Value Fund Class Y 8,587,436 967,261 Pioneer Disciplined Growth Fund Class Y 9,779,013 1,171,488 Pioneer Disciplined Value Fund Class Y 10,086,516 442,066 Pioneer Emerging Markets Fund Class Y 10,768,733 283,723 Pioneer Equity Income Fund Class Y 7,805,230 252,530 Pioneer Fund Class Y 10,247,651 869,642 Pioneer Fundamental Growth Fund Class Y 11,435,787 307,375 Pioneer Global Aggregate Bond Fund Class Y 3,497,922 1,752,987 Pioneer Global Equity Fund Class Y 16,635,846 444,668 Pioneer Global High Yield Fund Class Y 4,277,707 288,455 Pioneer Growth Opportunities Fund Class Y 8,373,856 177,204 Pioneer High Yield Fund Class Y 1,759,632 660 Pioneer Independence Fund Class Y 7,971 1,323,293 Pioneer International Value Fund Class Y 22,787,111 649,261 Pioneer Mid Cap Value Fund Class Y 14,056,492 597 Pioneer Oak Ridge Large Cap Growth Fund Class Y 7,903 213,778 Pioneer Oak Ridge Small Cap Growth Fund Class Y 6,062,755 232,851 Pioneer Real Estate Shares Class Y 5,800,317 646,578 Pioneer Research Fund Class Y 6,782,602 290,204 Pioneer Select Mid Cap Growth Fund Class Y 5,612,554 1,768,363 Pioneer Short Term Income Fund Class Y 17,082,391 409,289 Pioneer Strategic Income Fund Class Y 4,526,734 641 Pioneer Value Fund Class Y 7,528 ----------------------------------------------------------------------------------------- TOTAL MUTUAL FUNDS (Cost $177,438,514) $206,103,884 ----------------------------------------------------------------------------------------- Principal Amount ----------------------------------------------------------------------------------------- TEMPORARY CASH INVESTMENT -- 0.6% TIME DEPOSIT -- 0.6% $ 1,239,223 Bank Of New York Mellon Grand Cayman, 0.03%, 8/1/12 $ 1,239,223 ----------------------------------------------------------------------------------------- TOTAL TIME DEPOSIT (Cost $1,239,223) $ 1,239,223 ----------------------------------------------------------------------------------------- TOTAL INVESTMENTS IN SECURITIES -- 99.9% (Cost $178,677,737) (a) $207,343,107 ----------------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- 0.1% $ 168,083 ----------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $207,511,190 ========================================================================================= * Affiliated funds managed by Pioneer Investment Management, Inc. The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 45 Schedule of Investments | 7/31/12 Pioneer Ibbotson Growth Allocation Fund (continued) (a) At July 31, 2012, the net unrealized gain on investments based on cost for federal tax purposes of $180,418,049 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $28,714,994 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (1,789,936) ----------- Net unrealized gain $26,925,058 =========== Purchases and sales of securities (excluding temporary cash investments) for the year ended July 31, 2012 aggregated $15,190,282 and $27,160,533, respectively. Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels below. Highest priority is given to Level 1 inputs and lowest priority is given to Level 3. Level 1 -- quoted prices in active markets for identical securities Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.) Level 3 -- significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) The following is a summary of the inputs used as of July 31, 2012, in valuing the Fund's assets: ------------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total ------------------------------------------------------------------------------------------- Mutual Funds $206,103,884 $ -- $-- $206,103,884 Temporary Cash Investment -- 1,239,223 -- 1,239,223 ------------------------------------------------------------------------------------------- Total $206,103,884 $1,239,223 $-- $207,343,107 =========================================================================================== The accompanying notes are an integral part of these financial statements. 46 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Schedule of Investments | 7/31/12 Pioneer Ibbotson Aggressive Allocation Fund ----------------------------------------------------------------------------------------- Shares Value ----------------------------------------------------------------------------------------- MUTUAL FUNDS -- 99.5% PIONEER FUNDS* -- 99.5% 741,519 Pioneer Bond Fund Class Y $ 7,229,807 253,376 Pioneer Cullen Value Fund Class Y 4,646,910 477,390 Pioneer Disciplined Growth Fund Class Y 4,826,413 641,397 Pioneer Disciplined Value Fund Class Y 5,522,426 323,695 Pioneer Emerging Markets Fund Class Y 7,885,216 160,219 Pioneer Equity Income Fund Class Y 4,407,638 150,102 Pioneer Fund Class Y 6,091,137 464,276 Pioneer Fundamental Growth Fund Class Y 6,105,226 1,137,125 Pioneer Global Equity Fund Class Y 10,791,318 171,235 Pioneer Growth Opportunities Fund Class Y 4,970,965 1,026,973 Pioneer International Value Fund Class Y 17,684,476 536,100 Pioneer Mid Cap Value Fund Class Y 11,606,562 157,040 Pioneer Oak Ridge Small Cap Growth Fund Class Y 4,453,662 184,210 Pioneer Real Estate Shares Class Y 4,588,681 307,413 Pioneer Research Fund Class Y 3,224,762 226,550 Pioneer Select Mid Cap Growth Fund Class Y 4,381,471 225,815 Pioneer Short Term Income Fund Class Y 2,181,377 217,619 Pioneer Strategic Income Fund Class Y 2,406,871 ----------------------------------------------------------------------------------------- TOTAL MUTUAL FUNDS (Cost $94,516,201) $113,004,918 ----------------------------------------------------------------------------------------- Principal Amount ----------------------------------------------------------------------------------------- TEMPORARY CASH INVESTMENT -- 0.5% TIME DEPOSIT -- 0.5% $ 511,726 Bank Of New York Mellon Grand Cayman, 0.03%, 8/1/12 $ 511,726 ----------------------------------------------------------------------------------------- TOTAL TIME DEPOSIT (Cost $511,726) $ 511,726 ----------------------------------------------------------------------------------------- TOTAL INVESTMENTS IN SECURITIES -- 100.0% (Cost $95,027,927) (a) $113,516,644 ----------------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- 0.0% $ 2,620 ----------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $113,519,264 ========================================================================================= * Affiliated funds managed by Pioneer Investment Management, Inc. (a) At July 31, 2012, the net unrealized gain on investments based on cost for federal tax purposes of $96,722,693 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $18,567,086 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (1,773,135) ----------- Net unrealized gain $16,793,951 =========== The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 47 Schedule of Investments | 7/31/12 Pioneer Ibbotson Aggressive Allocation Fund (continued) Purchases and sales of securities (excluding temporary cash investments) for the year ended July 31, 2012 aggregated $8,649,759 and $19,729,042, respectively. Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels below. Highest priority is given to Level 1 inputs and lowest priority is given to Level 3. Level 1 -- quoted prices in active markets for identical securities Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.) Level 3 -- significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) The following is a summary of the inputs used as of July 31, 2012, in valuing the Fund's assets: ----------------------------------------------------------------------------------------- Level 1 Level 2 Level 3 Total ----------------------------------------------------------------------------------------- Mutual Funds $113,004,918 $ -- $-- $113,004,918 Temporary Cash Investment -- 511,726 -- 511,726 ----------------------------------------------------------------------------------------- Total $113,004,918 $511,726 $-- $113,516,644 ========================================================================================= The accompanying notes are an integral part of these financial statements. 48 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Statements of Assets and Liabilities | 7/31/12 -------------------------------------------------------------------------------------------------------- Conservative Moderate Growth Aggressive Allocation Allocation Allocation Allocation Fund Fund Fund Fund -------------------------------------------------------------------------------------------------------- ASSETS: Investments in securities of underlying $60,081,149 $188,090,250 $206,103,884 $113,004,918 affiliated funds, at value (at cost $54,277,349, $163,818,337, $177,438,514 and $94,516,201, respectively) Investments in securities of underlying 3,122,846 5,581,950 1,239,223 511,726 affiliated funds, at value (at cost $3,122,846, $5,581,950, $1,239,223 and $511,726, respectively) Total Investments (at cost $57,400,195, $63,203,995 $193,672,200 $207,343,107 $113,516,644 $169,400,287, $178,677,737 and $95,027,927, respectively) Receivables for: Investment Funds sold 122,835 203,308 521,606 69,514 Capital stock sold 10,277 72,967 105,654 76,922 Dividends 151,183 264,344 181,751 41,162 Due from Pioneer Investment 6,045 2,571 3,913 11,451 Management, Inc. Other assets 38,918 42,116 45,406 49,649 -------------------------------------------------------------------------------------------------------- Total assets $63,533,253 $194,257,506 $208,201,437 $113,765,342 -------------------------------------------------------------------------------------------------------- LIABILITIES: Payables for: Capital stock redeemed $ 66,202 $ 303,703 $ 420,469 $ 77,235 Due to affiliates 51,249 163,750 184,740 103,011 Accrued expenses and other liabilities 52,148 83,883 85,038 65,832 -------------------------------------------------------------------------------------------------------- Total liabilities: $ 169,599 $ 551,336 $ 690,247 $ 246,078 -------------------------------------------------------------------------------------------------------- NET ASSETS: Paid-in capital $61,895,100 $208,086,813 $228,327,775 $131,673,918 Undistributed net investment income 945,174 3,415,089 2,718,010 934,352 Accumulated net realized loss on (5,280,420) (42,067,645) (52,199,965) (37,577,723) investments Net unrealized gains on investments 5,803,800 24,271,913 28,665,370 18,488,717 -------------------------------------------------------------------------------------------------------- Total net assets $63,363,654 $193,706,170 $207,511,190 $113,519,264 -------------------------------------------------------------------------------------------------------- NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Net Assets of Class A shares $42,612,561 $118,832,863 $134,988,193 $ 82,939,761 Net Assets of Class B shares $ 4,429,179 $ 16,071,786 $ 24,940,942 $ 12,073,983 Net Assets of Class C shares $16,256,601 $ 53,593,979 $ 45,569,661 $ 17,316,941 Net Assets of Class Y shares $ 65,313 $ 5,207,542 $ 2,012,394 $ 1,188,579 Class A Shares outstanding 3,969,606 11,360,397 12,556,321 7,822,520 Class B Shares outstanding 421,623 1,600,863 2,618,573 1,213,255 Class C Shares outstanding 1,557,891 5,485,484 4,477,583 1,719,802 Class Y Shares outstanding 6,395 492,386 183,750 111,591 Net Asset Value -- Class A shares $ 10.73 $ 10.46 $ 10.75 $ 10.60 Net Asset Value -- Class B shares $ 10.51 $ 10.04 $ 9.52 $ 9.95 Net Asset Value -- Class C shares $ 10.44 $ 9.77 $ 10.18 $ 10.07 Net Asset Value -- Class Y shares $ 10.21 $ 10.58 $ 10.95 $ 10.65 MAXIMUM OFFERING PRICE: Class A (100/94.25 x net asset value per $ 11.39 $ 11.10 $ 11.41 $ 11.25 share) ======================================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 49 Statements of Operations For the Year Ended 7/31/12 --------------------------------------------------------------------------------------------------------------- Conservative Moderate Growth Aggressive Allocation Allocation Allocation Allocation Fund Fund Fund Fund --------------------------------------------------------------------------------------------------------------- INVESTMENT INCOME: Dividend income from underlying affiliated funds $2,145,038 $ 4,880,071 $ 4,329,243 $ 1,892,333 Interest 979 1,545 276 131 --------------------------------------------------------------------------------------------------------------- Total Investment Income $2,146,017 $ 4,881,616 $ 4,329,519 $ 1,892,464 --------------------------------------------------------------------------------------------------------------- EXPENSES: Management fees $ 80,277 $ 254,742 $ 272,243 $ 152,428 Transfer agent fees Class A 38,238 146,118 241,018 185,528 Class B 9,188 50,088 86,603 49,952 Class C 13,182 38,232 50,163 27,276 Class Y 324 774 744 645 Distribution fees Class A 103,257 293,981 332,980 210,937 Class B 47,338 204,828 290,233 142,173 Class C 156,452 507,575 452,364 174,802 Shareholder communications expense 42,990 144,460 155,561 104,725 Administrative fees 17,075 54,042 57,830 32,314 Custodian fees 27,748 81,456 89,853 51,559 Registration fees 59,799 62,778 65,739 63,035 Professional fees 39,775 58,025 44,573 41,645 Printing fees 19,483 11,145 14,056 15,174 Fees and expenses of nonaffiliated Trustees 7,440 7,509 8,536 7,682 Insurance expense 819 2,895 3,029 1,762 Miscellaneous 1,925 2,400 2,184 2,382 --------------------------------------------------------------------------------------------------------------- Total expenses $ 665,310 $ 1,921,048 $ 2,167,709 $ 1,264,019 Less fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (17,928) (16,580) (25,921) (34,364) --------------------------------------------------------------------------------------------------------------- Net expenses $ 647,382 $ 1,904,468 $ 2,141,788 $ 1,229,655 --------------------------------------------------------------------------------------------------------------- Net investment income $1,498,635 $ 2,977,148 $ 2,187,731 $ 662,809 --------------------------------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS: Net realized gain on underlying affiliated funds $ 27,709 $ 901,296 $ 486,497 $ 1,321,019 Capital gain distributions from underlying affiliated funds 416,853 2,258,435 2,762,766 1,595,422 --------------------------------------------------------------------------------------------------------------- $ 444,562 $ 3,159,731 $ 3,249,263 $ 2,916,441 --------------------------------------------------------------------------------------------------------------- Change in net unrealized loss on investments $ (975,558) $(8,605,957) $(9,518,002) $(8,039,169) --------------------------------------------------------------------------------------------------------------- Net loss on investments $ (530,996) $(5,446,226) $(6,268,739) $(5,122,728) --------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from operations $ 967,639 $(2,469,078) $(4,081,008) $(4,459,919) --------------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 50 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Statements of Changes in Net Assets ----------------------------------------------------------------------------------------------------------- Conservative Moderate Allocation Fund Allocation Fund ----------------------------- ------------------------------- Year Year Year Year Ended Ended Ended Ended 7/31/12 7/31/11 7/31/12 7/31/11 ----------------------------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income $ 1,498,635 $ 1,354,057 $ 2,977,148 $ 2,985,325 Net realized gain on investments 444,562 548,792 3,159,731 1,885,919 Change in net unrealized gain (loss) on investments (975,558) 3,169,079 (8,605,957) 21,125,168 ----------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from operations $ 967,639 $ 5,071,928 $ (2,469,078) $ 25,996,412 ----------------------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.31, $0.25, $0.24 and $0.18, respectively) $ (1,183,335) $ (946,240) $ (2,675,027) $ (2,332,515) Class B ($0.20, $0.19, $0.11 and $0.09, respectively) (91,836) (109,108) (244,751) (277,023) Class C ($0.23, $0.21, $0.18 and $0.13, respectively) (352,605) (308,923) (951,582) (638,047) Class Y ($0.23, $0.27, $0.29 and $0.22, respectively) (1,682) (3,336) (195,125) (182,103) ----------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (1,629,458) $ (1,367,607) $ (4,066,485) $ (3,429,688) ----------------------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sales or exchange of shares $ 15,727,021 $ 19,040,678 $ 35,940,163 $ 40,905,592 Reinvestment of distributions 1,491,380 1,243,095 3,714,500 3,160,706 Cost of shares repurchased (16,501,428) (17,062,314) (57,872,210) (58,487,012) ----------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from Fund share transactions 716,973 3,221,459 (18,217,547) (14,420,714) ----------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets $ 55,154 $ 6,925,780 $(24,753,110) $ 8,146,010 NET ASSETS: Beginning of year 63,308,500 56,382,720 218,459,280 210,313,270 ----------------------------------------------------------------------------------------------------------- End of year $ 63,363,654 $ 63,308,500 $193,706,170 $218,459,280 ----------------------------------------------------------------------------------------------------------- Undistributed net investment income, end of year $ 945,174 $ 981,435 $ 3,415,089 $ 4,066,186 ----------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 51 Statements of Changes in Net Assets (continued) ---------------------------------------------------------------------------------------------------------- Growth Aggressive Allocation Fund Allocation Fund ------------------------------- ------------------------------- Year Year Year Year Ended Ended Ended Ended 7/31/12 7/31/11 7/31/12 7/31/11 ---------------------------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income $ 2,187,731 $ 1,894,556 $ 662,809 $ 437,246 Net realized gain on investments 3,249,263 1,758,644 2,916,441 1,736,243 Change in net unrealized gain (loss) on investments (9,518,002) 26,432,617 (8,039,169) 17,502,218 ---------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from operations $ (4,081,008) $ 30,085,817 $ (4,459,919) $ 19,675,707 ---------------------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.19, $0.13, $0.13 and $0.06, respectively) $ (2,327,559) $ (1,626,115) $ (1,026,414) $ (500,463) Class B ($0.08, $0.04, $0.01 and $0.00, respectively) (254,128) (167,885) (21,009) -- Class C ($0.11, $0.06, $0.05 and $0.00, respectively) (512,265) (292,192) (84,457) -- Class Y ($0.23, $0.16, $0.16 and $0.10, respectively) (41,853) (37,705) (17,652) (19,832) ---------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (3,135,805) $ (2,123,897) $ (1,149,532) $ (520,295) ---------------------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sales or exchange of shares $ 31,220,224 $ 37,090,561 $ 17,689,729 $ 19,624,036 Reinvestment of distributions 2,989,892 2,024,851 1,113,126 502,848 Cost of shares repurchased (46,561,663) (50,928,001) (30,405,283) (33,324,579) ---------------------------------------------------------------------------------------------------------- Net decrease in net assets resulting from Fund share transactions (12,351,547) (11,812,589) (11,602,428) (13,197,695) ---------------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets $(19,568,360) $ 16,149,331 $(17,211,879) $ 5,957,717 NET ASSETS: Beginning of year 227,079,550 210,930,219 130,731,143 124,773,426 ---------------------------------------------------------------------------------------------------------- End of year $207,511,190 $227,079,550 $113,519,264 $130,731,143 ---------------------------------------------------------------------------------------------------------- Undistributed net investment income, end of year $ 2,718,010 $ 3,136,571 $ 934,352 $ 1,148,705 ---------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 52 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 For the Years Ended 7/31/12 and 7/31/11, respectively --------------------------------------------------------------------------------------------------- Conservative Allocation Fund -------------------------------------------------------------- '12 Shares '12 Amount '11 Shares '11 Amount --------------------------------------------------------------------------------------------------- Class A Shares sold 997,333 $ 10,516,102 1,191,261 $ 12,701,147 Reinvestment of distributions 111,770 1,145,640 86,115 907,650 Less shares repurchased (1,090,725) (11,477,406) (856,446) (9,160,449) --------------------------------------------------------------------------------------------------- Net increase 18,378 $ 184,336 420,930 $ 4,448,348 =================================================================================================== Class B Shares sold or exchanged 65,405 $ 672,958 51,466 $ 539,421 Reinvestment of distributions 8,527 85,946 9,721 100,614 Less shares repurchased (150,497) (1,547,463) (184,748) (1,937,126) --------------------------------------------------------------------------------------------------- Net decrease (76,565) $ (788,559) (123,561) $ (1,297,091) =================================================================================================== Class C Shares sold 442,570 $ 4,530,773 551,459 $ 5,732,562 Reinvestment of distributions 25,946 259,717 22,799 234,831 Less shares repurchased (337,214) (3,463,432) (559,199) (5,843,541) --------------------------------------------------------------------------------------------------- Net increase 131,302 $ 1,327,058 15,059 $ 123,852 =================================================================================================== Class Y Shares sold 719 $ 7,188 6,658 $ 67,548 Reinvestment of distributions 8 77 -- -- Less shares repurchased (1,291) (13,127) (11,872) (121,198) --------------------------------------------------------------------------------------------------- Net decrease (564) $ (5,862) (5,214) $ (53,650) =================================================================================================== --------------------------------------------------------------------------------------------------- Moderate Allocation Fund -------------------------------------------------------------- '12 Shares '12 Amount '11 Shares '11 Amount --------------------------------------------------------------------------------------------------- Class A Shares sold 2,068,964 $ 21,265,053 2,398,943 $ 25,138,515 Reinvestment of distributions 263,615 2,628,511 220,770 2,300,415 Less shares repurchased (3,275,964) (33,161,682) (3,262,073) (34,179,243) --------------------------------------------------------------------------------------------------- Net decrease (943,385) $ (9,268,118) (642,360) $ (6,740,313) =================================================================================================== Class B Shares sold or exchanged 43,190 $ 422,180 82,144 $ 825,363 Reinvestment of distributions 24,677 236,900 26,455 264,552 Less shares repurchased (1,016,431) (10,005,913) (1,140,012) (11,447,131) --------------------------------------------------------------------------------------------------- Net decrease (948,564) $ (9,346,833) (1,031,413) $(10,357,216) =================================================================================================== Class C Shares sold 1,350,846 $ 13,060,006 1,427,314 $ 14,089,701 Reinvestment of distributions 77,571 725,290 50,525 495,149 Less shares repurchased (1,114,511) (10,741,161) (1,113,590) (10,973,834) --------------------------------------------------------------------------------------------------- Net increase 313,906 $ 3,044,135 364,249 $ 3,611,016 =================================================================================================== Class Y Shares sold 117,189 $ 1,192,924 81,079 $ 852,013 Reinvestment of distributions 12,306 123,799 9,553 100,590 Less shares repurchased (378,802) (3,963,454) (177,633) (1,886,804) --------------------------------------------------------------------------------------------------- Net decrease (249,307) $ (2,646,731) (87,001) $ (934,201) =================================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 53 Statements of Changes in Net Assets (continued) For the Years ended 7/31/12 and 7/31/11, respectively --------------------------------------------------------------------------------------------------- Growth Allocation Fund -------------------------------------------------------------- '12 Shares '12 Amount '11 Shares '11 Amount --------------------------------------------------------------------------------------------------- Class A Shares sold 2,003,752 $ 21,129,016 2,255,820 $ 24,338,181 Reinvestment of distributions 225,622 2,306,260 149,229 1,604,208 Less shares repurchased (2,384,121) (25,028,435) (2,533,543) (27,279,172) --------------------------------------------------------------------------------------------------- Net decrease (154,747) $ (1,593,159) (128,494) $ (1,336,783) =================================================================================================== Class B Shares sold or exchanged 34,878 $ 326,306 110,430 $ 1,050,971 Reinvestment of distributions 27,418 249,232 17,160 163,710 Less shares repurchased (1,072,262) (9,989,741) (1,117,998) (10,682,043) --------------------------------------------------------------------------------------------------- Net decrease (1,009,966) $ (9,414,203) (990,408) $ (9,467,362) =================================================================================================== Class C Shares sold 896,095 $ 8,966,029 1,074,355 $ 11,038,856 Reinvestment of distributions 41,731 405,623 23,184 236,944 Less shares repurchased (1,086,051) (10,818,416) (1,122,998) (11,422,747) --------------------------------------------------------------------------------------------------- Net decrease (148,225) $ (1,446,764) (25,459) $ (146,947) =================================================================================================== Class Y Shares sold 76,808 $ 798,873 61,385 $ 662,553 Reinvestment of distributions 2,764 28,777 1,806 19,989 Less shares repurchased (65,844) (725,071) (142,216) (1,544,039) --------------------------------------------------------------------------------------------------- Net increase (decrease) 13,728 $ 102,579 (79,025) $ (861,497) =================================================================================================== --------------------------------------------------------------------------------------------------- Aggressive Allocation Fund -------------------------------------------------------------- '12 Shares '12 Amount '11 Shares '11 Amount --------------------------------------------------------------------------------------------------- Class A Shares sold 1,265,738 $ 13,140,808 1,364,955 $ 14,624,617 Reinvestment of distributions 100,201 1,013,032 46,096 494,158 Less shares repurchased (1,931,678) (20,155,382) (1,963,006) (20,917,662) --------------------------------------------------------------------------------------------------- Net decrease (565,739) $ (6,001,542) (551,955) $ (5,798,887) =================================================================================================== Class B Shares sold or exchanged 14,573 $ 141,783 44,875 $ 454,912 Reinvestment of distributions 2,120 20,203 -- -- Less shares repurchased (507,652) (4,947,628) (488,665) (4,942,961) --------------------------------------------------------------------------------------------------- Net decrease (490,959) $ (4,785,642) (443,790) $ (4,488,049) =================================================================================================== Class C Shares sold 411,387 $ 4,072,579 424,130 $ 4,282,098 Reinvestment of distributions 7,028 67,759 -- -- Less shares repurchased (497,759) (4,886,040) (624,449) (6,338,664) --------------------------------------------------------------------------------------------------- Net decrease (79,344) $ (745,702) (200,319) $ (2,056,566) =================================================================================================== Class Y Shares sold 32,610 $ 334,559 24,498 $ 262,409 Reinvestment of distributions 1,196 12,132 803 8,690 Less shares repurchased (38,940) (416,233) (101,701) (1,125,292) --------------------------------------------------------------------------------------------------- Net decrease (5,134) $ (69,542) (76,400) $ (854,193) =================================================================================================== The accompanying notes are an integral part of these financial statements. 54 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Financial Highlights --------------------------------------------------------------------------------------------------------------------------- Conservative Allocation Fund ------------------------------------------------------------------- Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 --------------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 10.85 $ 10.19 $ 9.40 $ 10.48 $ 11.28 --------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.28 $ 0.26 $ 0.25 $ 0.39 $ 0.33 Net realized and unrealized gain (loss) on investments (0.09) 0.65 0.86 (0.94) (0.63) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.19 $ 0.91 $ 1.11 $ (0.55) $ (0.30) --------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.31) $ (0.25) $ (0.32) $ (0.31) $ (0.35) Net realized gain -- -- -- (0.22) (0.15) --------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.31) $ (0.25) $ (0.32) $ (0.53) $ (0.50) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.12) $ 0.66 $ 0.79 $ (1.08) $ (0.80) --------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.73 $ 10.85 $ 10.19 $ 9.40 $ 10.48 =========================================================================================================================== Total return* 1.85% 9.04% 11.88% (4.44)% (2.88)% Ratio of net expenses to average net assets+ ++ 0.78% 0.78% 0.78% 0.78% 0.78% Ratio of net investment income to average net assets+ ++ 2.69% 2.47% 2.55% 4.43% 2.96% Portfolio turnover rate 20% 15% 13% 53% 29% Net assets, end of period (in thousands) $42,613 $42,882 $35,986 $25,992 $26,782 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 0.82% 0.80% 0.84% 1.09% 0.89% Net investment income 2.65% 2.45% 2.49% 4.12% 2.86% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.78% 0.78% 0.78% 0.78% 0.78% Net investment income 2.69% 2.47% 2.55% 4.43% 2.97% =========================================================================================================================== (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 55 Financial Highlights (continued) --------------------------------------------------------------------------------------------------------------------------- Conservative Allocation Fund ------------------------------------------------------------------- Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 --------------------------------------------------------------------------------------------------------------------------- Class B Net asset value, beginning of period $10.61 $ 9.99 $ 9.24 $10.31 $11.10 --------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.19 $ 0.17 $ 0.16 $ 0.31 $ 0.22 Net realized and unrealized gain (loss) on investments (0.09) 0.64 0.83 (0.93) (0.61) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.10 $ 0.81 $ 0.99 $(0.62) $(0.39) --------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $(0.20) $(0.19) $(0.24) $(0.23) $(0.25) Net realized gain -- -- -- (0.22) (0.15) --------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $(0.20) $(0.19) $(0.24) $(0.45) $(0.40) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $(0.10) $ 0.62 $ 0.75 $(1.07) $(0.79) --------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $10.51 $10.61 $ 9.99 $ 9.24 $10.31 =========================================================================================================================== Total return* 1.04% 8.15% 10.80% (5.31)% (3.72)% Ratio of net expenses to average net assets+ ++ 1.68% 1.64% 1.68% 1.68% 1.69% Ratio of net investment income to average net assets+ ++ 1.82% 1.62% 1.67% 3.58% 2.05% Portfolio turnover rate 20% 15% 13% 53% 29% Net assets, end of period (in thousands) $4,429 $5,285 $6,214 $5,957 $6,370 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 1.71% 1.64% 1.70% 1.90% 1.73% Net investment income 1.79% 1.62% 1.64% 3.36% 2.01% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.68% 1.64% 1.68% 1.68% 1.68% Net investment income 1.82% 1.62% 1.67% 3.58% 2.05% =========================================================================================================================== (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 56 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 --------------------------------------------------------------------------------------------------------------------------- Conservative Allocation Fund ------------------------------------------------------------------- Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 --------------------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 10.56 $ 9.96 $ 9.21 $ 10.30 $ 11.09 --------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.20 $ 0.18 $ 0.17 $ 0.31 $ 0.23 Net realized and unrealized gain (loss) on investments (0.09) 0.63 0.83 (0.95) (0.61) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.11 $ 0.81 $ 1.00 $ (0.64) $ (0.38) --------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.23) $ (0.21) $ (0.25) $ (0.23) $ (0.26) Net realized gain -- -- -- (0.22) (0.15) --------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.23) $ (0.21) $ (0.25) $ (0.45) $ (0.41) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.12) $ 0.60 $ 0.75 $ (1.09) $ (0.79) --------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.44 $ 10.56 $ 9.96 $ 9.21 $ 10.30 =========================================================================================================================== Total return* 1.16% 8.18% 10.91% (5.53)% (3.63)% Ratio of net expenses to average net assets+ ++ 1.56% 1.55% 1.59% 1.68% 1.63% Ratio of net investment income to average net assets+ ++ 1.91% 1.71% 1.73% 3.54% 2.10% Portfolio turnover rate 20% 15% 13% 53% 29% Net assets, end of period (in thousands) $16,257 $15,068 $14,063 $11,184 $11,132 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 1.56% 1.55% 1.59% 1.80% 1.63% Net investment income 1.91% 1.71% 1.73% 3.43% 2.10% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.56% 1.55% 1.59% 1.68% 1.63% Net investment income 1.91% 1.71% 1.73% 3.54% 2.11% =========================================================================================================================== (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 57 Financial Highlights (continued) --------------------------------------------------------------------------------------------------------------------------- Conservative Allocation Fund ------------------------------------------------------------------- Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 --------------------------------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 10.41 $ 9.79 $ 9.02 $ 10.50 $11.30 --------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.13 $ 0.24 $ 0.28 $ (0.18) $ 0.28 Net realized and unrealized gain (loss) on investments (0.10) 0.65 0.78 (0.97) (0.65) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.03 $ 0.89 $ 1.06 $ (1.15) $(0.37) --------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $(0.23) $(0.27) $(0.29) $ (0.11) $(0.28) Net realized gain -- -- -- (0.22) (0.15) --------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $(0.23) $(0.27) $(0.29) $ (0.33) $(0.43) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $(0.20) $ 0.62 $ 0.77 $ (1.48) $(0.80) --------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $10.21 $10.41 $ 9.79 $ 9.02 $10.50 =========================================================================================================================== Total return* 0.34% 9.18% 11.89% (10.66)% (3.42)% Ratio of net expenses to average net assets+ ++ 2.26% 0.82% 0.63% 7.26% 1.25% Ratio of net investment income to average net assets+ ++ 1.28% 2.36% 2.94% (2.03)% 2.50% Portfolio turnover rate 20% 15% 13% 53% 29% Net assets, end of period (in thousands) $ 65 $ 72 $ 119 $ 9 $ 10 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 2.26% 0.82% 0.63% 7.26% 1.25% Net investment income (loss) 1.28% 2.36% 2.94% (2.03)% (2.50)% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 2.26% 0.82% 0.63% 7.26% 1.23% Net investment income (loss) 1.28% 2.36% 2.94% (2.03)% 2.52% =========================================================================================================================== (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 58 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 ---------------------------------------------------------------------------------------------------------------------------- Moderate Allocation Fund -------------------------------------------------------------------- Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 ---------------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 10.74 $ 9.68 $ 8.79 $ 10.89 $ 12.50 ---------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.18 $ 0.17 $ 0.16 $ 0.27 $ 0.24 Net realized and unrealized gain (loss) on investments (0.22) 1.07 1.00 (1.63) (1.10) ---------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.04) $ 1.24 $ 1.16 $ (1.36) $ (0.86) ---------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.24) $ (0.18) $ (0.27) $ (0.13) $ (0.31) Net realized gain -- -- -- (0.61) (0.44) ---------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.24) $ (0.18) $ (0.27) $ (0.74) $ (0.75) ---------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.28) $ 1.06 $ 0.89 $ (2.10) $ (1.61) ---------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.46 $ 10.74 $ 9.68 $ 8.79 $ 10.89 ============================================================================================================================ Total return* (0.27)% 12.91% 13.26% (11.20)% (7.47)% Ratio of net expenses to average net assets+ ++ 0.72% 0.71% 0.73% 0.74% 0.65% Ratio of net investment income to average net assets+ ++ 1.75% 1.59% 1.70% 3.20% 2.03% Portfolio turnover rate 9% 14% 10% 44% 21% Net assets, end of period (in thousands) $118,833 $132,166 $125,354 $120,786 $147,004 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 0.72% 0.71% 0.73% 0.76% 0.65% Net investment income 1.75% 1.59% 1.70% 3.18% 2.03% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.72% 0.71% 0.73% 0.74% 0.65% Net investment income 1.75% 1.59% 1.70% 3.20% 2.03% ============================================================================================================================ (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 59 Financial Highlights (continued) --------------------------------------------------------------------------------------------------------------------------- Moderate Allocation Fund ------------------------------------------------------------------- Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 --------------------------------------------------------------------------------------------------------------------------- Class B Net asset value, beginning of period $ 10.26 $ 9.25 $ 8.41 $ 10.39 $ 11.97 --------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.11 $ 0.08 $ 0.08 $ 0.19 $ 0.13 Net realized and unrealized gain (loss) on investments (0.22) 1.02 0.96 (1.53) (1.06) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.11) $ 1.10 $ 1.04 $ (1.34) $ (0.93) --------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.11) $ (0.09) $ (0.20) $ (0.03) $ (0.21) Net realized gain -- -- -- (0.61) (0.44) --------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.11) $ (0.09) $ (0.20) $ (0.64) $ (0.65) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.22) $ 1.01 $ 0.84 $ (1.98) $ (1.58) --------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.04 $ 10.26 $ 9.25 $ 8.41 $ 10.39 =========================================================================================================================== Total return* (0.99)% 11.89% 12.39% (11.81)% (8.32)% Ratio of net expenses to average net assets+ ++ 1.52% 1.52% 1.52% 1.52% 1.52% Ratio of net investment income to average net assets+ ++ 1.11% 0.83% 0.92% 2.44% 1.16% Portfolio turnover rate 9% 14% 10% 44% 21% Net assets, end of period (in thousands) $16,072 $26,166 $33,115 $35,197 $50,515 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 1.60% 1.53% 1.56% 1.63% 1.52% Net investment income 1.03% 0.82% 0.88% 2.33% 1.16% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.52% 1.52% 1.52% 1.52% 1.51% Net investment income 1.11% 0.83% 0.92% 2.44% 1.17% =========================================================================================================================== (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 60 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 --------------------------------------------------------------------------------------------------------------------------- Moderate Allocation Fund ------------------------------------------------------------------- Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 --------------------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 10.07 $ 9.10 $ 8.29 $ 10.30 $ 11.88 --------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.10 $ 0.09 $ 0.09 $ 0.19 $ 0.14 Net realized and unrealized gain (loss) on investments (0.22) 1.01 0.94 (1.53) (1.05) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.12) $ 1.10 $ 1.03 $ (1.34) $ (0.91) --------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.18) $ (0.13) $ (0.22) $ (0.06) $ (0.23) Net realized gain -- -- -- (0.61) (0.44) --------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.18) $ (0.13) $ (0.22) $ (0.67) $ (0.67) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.30) $ 0.97 $ 0.81 $ (2.01) $ (1.58) --------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.77 $ 10.07 $ 9.10 $ 8.29 $ 10.30 =========================================================================================================================== Total return* (1.08)% 12.12% 12.43% (11.85)% (8.19)% Ratio of net expenses to average net assets+ ++ 1.41% 1.40% 1.44% 1.52% 1.39% Ratio of net investment income to average net assets+ ++ 1.06% 0.89% 0.98% 2.44% 1.28% Portfolio turnover rate 9% 14% 10% 44% 21% Net assets, end of period (in thousands) $53,594 $52,059 $43,725 $37,513 $45,594 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 1.41% 1.40% 1.44% 1.52% 1.39% Net investment income 1.06% 0.89% 0.98% 2.44% 1.28% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.41% 1.40% 1.44% 1.52% 1.39% Net investment income 1.06% 0.89% 0.98% 2.44% 1.28% =========================================================================================================================== (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 61 Financial Highlights (continued) --------------------------------------------------------------------------------------------------------------------------- Moderate Allocation Fund ------------------------------------------------------------------- Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 --------------------------------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $10.88 $ 9.80 $ 8.89 $ 10.94 $ 12.55 --------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.22 $ 0.21 $ 0.20 $ 0.29 $ 0.29 Net realized and unrealized gain (loss) on investments (0.23) 1.09 1.02 (1.55) (1.11) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $(0.01) $ 1.30 $ 1.22 $ (1.26) $ (0.82) --------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $(0.29) $(0.22) $(0.31) $ (0.18) $ (0.35) Net realized gain -- -- -- (0.61) (0.44) --------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $(0.29) $(0.22) $(0.31) $ (0.79) $ (0.79) --------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $(0.30) $ 1.08 $ 0.91 $ (2.05) $ (1.61) --------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $10.58 $10.88 $ 9.80 $ 8.89 $ 10.94 =========================================================================================================================== Total return* 0.00%* 13.37% 13.75% (10.09)% (7.10)% Ratio of net expenses to average net assets+ ++ 0.38% 0.32% 0.33% 0.33% 0.27% Ratio of net investment income to average net assets+ ++ 2.14% 2.00% 2.10% 3.59% 2.40% Portfolio turnover rate 9% 14% 10% 44% 21% Net assets, end of period (in thousands) $5,208 $8,069 $8,120 $ 8,015 $17,905 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 0.38% 0.32% 0.33% 0.33% 0.27% Net investment income 2.14% 2.00% 2.10% 3.59% 2.40% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.38% 0.32% 0.33% 0.33% 0.27% Net investment income 2.14% 2.00% 2.10% 3.59% 2.40% =========================================================================================================================== (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. * Amount rounds to less than .01%. The accompanying notes are an integral part of these financial statements. 62 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 ----------------------------------------------------------------------------------------------------------------------------- Growth Allocation Fund ------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 ----------------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 11.09 $ 9.77 $ 8.74 $ 11.50 $ 13.47 ----------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.14 $ 0.12 $ 0.11 $ 0.19 $ 0.16 Net realized and unrealized gain (loss) on investments (0.29) 1.33 1.10 (2.14) (1.41) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.15) $ 1.45 $ 1.21 $ (1.95) $ (1.25) ----------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.19) $ (0.13) $ (0.18) $ (0.04) $ (0.25) Net realized gain -- -- -- (0.77) (0.47) ----------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.19) $ (0.13) $ (0.18) $ (0.81) $ (0.72) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.34) $ 1.32 $ 1.03 $ (2.76) $ (1.97) ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.75 $ 11.09 $ 9.77 $ 8.74 $ 11.50 ============================================================================================================================= Total return* (1.31)% 14.85% 13.90% (15.49)% (9.88)% Ratio of net expenses to average net assets+ ++ 0.76% 0.76% 0.79% 0.79% 0.78% Ratio of net investment income to average net assets+ ++ 1.29% 1.11% 1.12% 2.24% 1.24% Portfolio turnover rate 7% 12% 11% 49% 20% Net assets, end of period (in thousands) $134,988 $140,979 $125,433 $111,447 $139,670 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 0.76% 0.76% 0.80% 0.89% 0.78% Net investment income 1.29% 1.11% 1.11% 2.14% 1.24% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.76% 0.76% 0.79% 0.79% 0.77% Net investment income 1.29% 1.11% 1.12% 2.24% 1.25% ============================================================================================================================= (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 63 Financial Highlights (continued) ----------------------------------------------------------------------------------------------------------------------------- Growth Allocation Fund ------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 ----------------------------------------------------------------------------------------------------------------------------- Class B Net asset value, beginning of period $ 9.80 $ 8.64 $ 7.75 $ 10.33 $ 12.17 ----------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.06 $ 0.03 $ 0.03 $ 0.11 $ 0.05 Net realized and unrealized gain (loss) on investments (0.26) 1.17 0.98 (1.92) (1.28) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.20) $ 1.20 $ 1.01 $ (1.81) $ (1.23) ----------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.08) $ (0.04) $ (0.12) $ -- $ (0.14) Net realized gain -- -- -- (0.77) (0.47) ----------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.08) $ (0.04) $ (0.12) $ (0.77) $ (0.61) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.28) $ 1.16 $ 0.89 $ (2.58) $ (1.84) ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.52 $ 9.80 $ 8.64 $ 7.75 $ 10.33 ============================================================================================================================= Total return* (2.01)% 13.90% 13.03% (16.05)% (10.66)% Ratio of net expenses to average net assets+ ++ 1.57% 1.57% 1.57% 1.57% 1.58% Ratio of net investment income to average net assets+ ++ 0.59% 0.35% 0.36% 1.47% 0.44% Portfolio turnover rate 7% 12% 11% 49% 20% Net assets, end of period (in thousands) $24,941 $35,567 $39,902 $43,390 $61,704 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 1.66% 1.61% 1.66% 1.77% 1.64% Net investment income 0.50% 0.31% 0.27% 1.27% 0.38% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.57% 1.57% 1.57% 1.57% 1.57% Net investment income 0.59% 0.35% 0.36% 1.47% 0.45% ============================================================================================================================= (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 64 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 ----------------------------------------------------------------------------------------------------------------------------- Growth Allocation Fund ------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 ----------------------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 10.50 $ 9.26 $ 8.30 $ 10.99 $ 12.90 ----------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.06 $ 0.04 $ 0.04 $ 0.11 $ 0.07 Net realized and unrealized gain (loss) on investments (0.27) 1.26 1.04 (2.03) (1.34) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.21) $ 1.30 $ 1.08 $ (1.92) $ (1.27) ----------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.11) $ (0.06) $ (0.12) $ -- $ (0.17) Net realized gain -- -- -- (0.77) (0.47) ----------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.11) $ (0.06) $ (0.12) $ (0.77) $ (0.64) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.32) $ 1.24 $ 0.96 $ (2.69) $ (1.91) ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.18 $ 10.50 $ 9.26 $ 8.30 $ 10.99 ============================================================================================================================= Total return* (1.91)% 14.10% 13.08% (16.08)% (10.43)% Ratio of net expenses to average net assets+ ++ 1.46% 1.46% 1.51% 1.57% 1.48% Ratio of net investment income to average net assets+ ++ 0.59% 0.40% 0.40% 1.44% 0.54% Portfolio turnover rate 7% 12% 11% 49% 20% Net assets, end of period (in thousands) $45,570 $48,586 $43,087 $36,602 $47,898 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 1.46% 1.46% 1.51% 1.60% 1.48% Net investment income 0.59% 0.40% 0.40% 1.40% 0.54% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.46% 1.46% 1.51% 1.57% 1.47% Net investment income 0.59% 0.40% 0.40% 1.44% 0.54% ============================================================================================================================= (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 65 Financial Highlights (continued) ----------------------------------------------------------------------------------------------------------------------------- Growth Allocation Fund ------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 ----------------------------------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 11.45 $ 10.07 $ 9.00 $ 11.64 $ 13.55 ----------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.17 $ 0.17 $ 0.15 $ 0.20 $ 0.22 Net realized and unrealized gain (loss) on investments (0.44) 1.37 1.14 (1.97) (1.36) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.27) $ 1.54 $ 1.29 $ (1.77) $ (1.14) ----------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.23) $ (0.16) $ (0.22) $ (0.10) $ (0.30) Net realized gain -- -- -- (0.77) (0.47) ----------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.23) $ (0.16) $ (0.22) $ (0.87) $ (0.77) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.50) $ 1.38 $ 1.07 $ (2.64) $ (1.91) ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.95 $ 11.45 $ 10.07 $ 9.00 $ 11.64 ============================================================================================================================= Total return* (2.28)% 15.39% 14.33% (13.68)% (9.05)% Ratio of net expenses to average net assets+ ++ 0.50% 0.36% 0.39% 0.39% 0.34% Ratio of net investment income to average net assets+ ++ 1.60% 1.58% 1.54% 2.44% 1.67% Portfolio turnover rate 7% 12% 11% 49% 20% Net assets, end of period (in thousands) $ 2,012 $ 1,947 $ 2,508 $ 1,614 $ 2,683 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 0.50% 0.36% 0.39% 0.39% 0.34% Net investment income 1.60% 1.58% 1.54% 2.44% 1.67% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.50% 0.36% 0.39% 0.39% 0.34% Net investment income 1.60% 1.58% 1.54% 2.44% 1.67% ============================================================================================================================= (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 66 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 ----------------------------------------------------------------------------------------------------------------------------- Aggressive Allocation Fund ------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 ----------------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 11.07 $ 9.56 $ 8.45 $ 11.85 $ 14.20 ----------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.08 $ 0.06 $ 0.04 $ 0.09 $ 0.07 Net realized and unrealized gain (loss) on investments (0.42) 1.51 1.16 (2.54) (1.69) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.34) $ 1.57 $ 1.20 $ (2.45) $ (1.62) ----------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.13) $ (0.06) $ (0.09) $ -- $ (0.23) Net realized gain -- -- -- (0.95) (0.50) ----------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.13) $ (0.06) $ (0.09) $ (0.95) $ (0.73) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.47) $ 1.51 $ 1.11 $ (3.40) $ (2.35) ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.60 $ 11.07 $ 9.56 $ 8.45 $ 11.85 ============================================================================================================================= Total return* (3.06)% 16.42% 14.16% (19.05)% (12.03)% Ratio of net expenses to average net assets+ ++ 0.85% 0.85% 0.85% 0.85% 0.84% Ratio of net investment income to average net assets+ ++ 0.76% 0.52% 0.44% 1.07% 0.54% Portfolio turnover rate 7% 11% 12% 55% 13% Net assets, end of period (in thousands) $82,940 $92,878 $85,488 $79,480 $102,941 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 0.87% 0.85% 0.88% 1.01% 0.84% Net investment income 0.74% 0.52% 0.41% 0.91% 0.54% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.85% 0.85% 0.85% 0.85% 0.83% Net investment income 0.76% 0.52% 0.44% 1.07% 0.55% ============================================================================================================================= (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 67 Financial Highlights (continued) ----------------------------------------------------------------------------------------------------------------------------- Aggressive Allocation Fund ------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 ----------------------------------------------------------------------------------------------------------------------------- Class B Net asset value, beginning of period $ 10.35 $ 8.96 $ 7.93 $ 11.29 $ 13.55 ----------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.01 $ (0.02) $ (0.03) $ 0.02 $ (0.03) Net realized and unrealized gain (loss) on investments (0.40) 1.41 1.08 (2.43) (1.61) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.39) $ 1.39 $ 1.05 $ (2.41) $ (1.64) ----------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.01) $ -- $ (0.02) $ -- $ (0.12) Net realized gain -- -- -- (0.95) (0.50) ----------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.01) $ -- $ (0.02) $ (0.95) $ (0.62) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.40) $ 1.39 $ 1.03 $ (3.36) $ (2.26) ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.95 $ 10.35 $ 8.96 $ 7.93 $ 11.29 ============================================================================================================================= Total return* (3.72)% 15.51% 13.22% (19.69)% (12.72)% Ratio of net expenses to average net assets+ ++ 1.64% 1.64% 1.64% 1.64% 1.65% Ratio of net investment income to average net assets+ ++ 0.05% (0.21)% (0.33)% 0.28% (0.28)% Portfolio turnover rate 7% 11% 12% 55% 13% Net assets, end of period (in thousands) $12,074 $17,642 $19,256 $20,884 $30,405 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 1.77% 1.71% 1.76% 1.89% 1.71% Net investment income (loss) (0.08)% (0.28)% (0.45)% 0.04% (0.34)% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.64% 1.64% 1.64% 1.64% 1.64% Net investment income (loss) 0.05% (0.21)% (0.33)% 0.28% (0.27)% ============================================================================================================================= (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 68 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 ----------------------------------------------------------------------------------------------------------------------------- Aggressive Allocation Fund ------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 ----------------------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 10.50 $ 9.08 $ 8.04 $ 11.43 $ 13.73 ----------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.00(b) $ (0.01) $ (0.03) $ 0.02 $ (0.02) Net realized and unrealized gain (loss) on investments (0.38) 1.43 1.10 (2.46) (1.62) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.38) $ 1.42 $ 1.07 $ (2.44) $ (1.64) ----------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.05) $ -- $ (0.03) $ -- $ (0.16) Net realized gain -- -- -- (0.95) (0.50) ----------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.05) $ -- $ (0.03) $ (0.95) $ (0.66) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.43) $ 1.42 $ 1.04 $ (3.39) $ (2.30) ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.07 $ 10.50 $ 9.08 $ 8.04 $ 11.43 ============================================================================================================================= Total return* (3.61)% 15.64% 13.25% (19.71)% (12.61)% Ratio of net expenses to average net assets+ ++ 1.56% 1.55% 1.58% 1.64% 1.53% Ratio of net investment income to average net assets+ ++ 0.01% (0.14)% (0.31)% 0.27% (0.16)% Portfolio turnover rate 7% 11% 12% 55% 13% Net assets, end of period (in thousands) $17,317 $18,899 $18,161 $17,171 $22,930 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 1.56% 1.55% 1.58% 1.70% 1.53% Net investment income (loss) 0.01% (0.14)% (0.31)% 0.21% (0.16)% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 1.56% 1.55% 1.58% 1.64% 1.52% Net investment income (loss) 0.01% (0.14)% (0.31)% 0.27% (0.15)% ============================================================================================================================= (a) Calculated using average shares outstanding for the period. (b) Amount rounds to less than $.01. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 69 Financial Highlights (continued) ----------------------------------------------------------------------------------------------------------------------------- Aggressive Allocation Fund ------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 7/31/12 7/31/11 7/31/10 7/31/09 7/31/08 ----------------------------------------------------------------------------------------------------------------------------- Class Y Net asset value, beginning of period $ 11.24 $ 9.67 $ 8.55 $ 12.02 $14.26 ----------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (a) $ 0.12 $ 0.11 $ 0.08 $ 0.13 $ 0.15 Net realized and unrealized gain (loss) on investments (0.55) 1.56 1.16 (2.65) (1.60) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.43) $ 1.67 $ 1.24 $ (2.52) $ (1.45) ----------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income $ (0.16) $ (0.10) $ (0.12) $ -- $ (0.29) Net realized gain -- -- -- (0.95) (0.50) ----------------------------------------------------------------------------------------------------------------------------- Total distributions to shareowners $ (0.16) $ (0.10) $ (0.12) $ (0.95) $ (0.79) ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.59) $ 1.57 $ 1.12 $ (3.47) $ (2.24) ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 10.65 $ 11.24 $ 9.67 $ 8.55 $ 12.02 ============================================================================================================================= Total return* (3.76)% 17.32% 14.49% (19.35)% (10.83)% Ratio of net expenses to average net assets+ ++ 0.55% 0.46% 0.42% 0.43% 0.35% Ratio of net investment income to average net assets+ ++ 1.11% 0.99% 0.88% 1.58% 1.06% Portfolio turnover rate 7% 11% 12% 55% 13% Net assets, end of period (in thousands) $ 1,189 $ 1,311 $ 1,868 $ 1,627 $ 3,105 Ratios with no waivers of fees and assumption of expenses by the Adviser and no reduction for fees paid indirectly: Total expenses 0.55% 0.46% 0.42% 0.43% 0.35% Net investment income 1.11% 0.99% 0.88% 1.58% 1.06% Ratios with waiver of fees and assumption of expenses by the Adviser and reduction for fees paid indirectly: Net expenses 0.55% 0.46% 0.42% 0.43% 0.35% Net investment income 1.11% 0.99% 0.88% 1.58% 1.06% ============================================================================================================================= (a) Calculated using average shares outstanding for the period. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. + In addition to the expenses which the Fund bears directly, the Fund indirectly bears pro rata shares of the expenses of the funds in which the Fund invests. Because each of the underlying funds bears its own varying expense levels and because the Fund may own differing proportions of each fund at different times, the amount of expenses incurred indirectly by the Fund will vary from time to time. ++ Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 70 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Notes to Financial Statements | 7/31/12 1. Organization and Significant Accounting Policies Pioneer Ibbotson Asset Allocation Series (the Trust) is organized as a Delaware statutory trust and is registered with the Securities and Exchange Commission under the Investment Company Act of 1940 (the 1940 Act) as an open-end management investment company. The Trust consists of four separate funds, each issuing four classes of shares (collectively, the Funds, individually, the Fund) as follows: Pioneer Ibbotson Conservative Allocation Fund (Conservative Fund) Pioneer Ibbotson Moderate Allocation Fund (Moderate Fund) Pioneer Ibbotson Growth Allocation Fund (Growth Fund) Pioneer Ibbotson Aggressive Allocation Fund (Aggressive Fund) The investment objective of the Conservative Fund, the Moderate Fund and the Growth Fund is to seek long-term capital growth and current income. The investment objective of the Aggressive Fund is to seek long-term capital growth. Each Fund is a "fund of funds," which means that it seeks to achieve its investment objective by investing exclusively in other Pioneer funds ("underlying affiliated funds") managed by Pioneer Investment Management, Inc. (PIM) rather than by direct investment in securities. In the future, the Funds also may invest in regulated investment companies that are not managed by PIM. The Funds indirectly pay a portion of the expenses incurred by the underlying funds. Consequently, an investment in the Funds entails more direct and indirect expenses than direct investment in the underlying funds. Effective as of the close of business on December 31, 2009, the Fund's Class B shares are no longer offered to new or existing shareholders, except that dividends and/or capital gain distributions may continue to be reinvested in Class B shares, and shareholders may exchange their Class B shares for Class B shares of other Pioneer funds, as permitted by existing exchange privileges. Each class of shares represents an interest in the same portfolio of investments of each Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different rates of class-specific fees and expenses such as transfer agent and distribution fees. Differences in class specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends from net investment income earned by each class. The Amended and Restated Declaration of Trust of each Fund gives the Board the flexibility to specify either per-share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per-share voting, each share of a class of a Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 71 power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Each share class has exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. There is no distribution plan for Class Y shares. Class B shares convert to Class A shares approximately eight years after the date of purchase. The financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Funds to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from these estimates. The following is a summary of significant accounting policies followed by the Trust in preparation of its financial statements, which are consistent with those policies generally accepted in the investment company industry: A. Security Valuation Security transactions are recorded as of the trade date. The net asset value is computed once daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. In computing the net asset value, holdings of mutual fund shares are valued at the net asset value of each fund held. Dividend income and realized capital gain distributions from investment company shares held are recorded on the ex-dividend date. Temporary cash investments are valued at amortized cost which approximates market value. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. To obtain information on the investment policies of an underlying affiliated fund, please refer to that fund's individual prospectus. B. Federal Income Taxes It is the Funds' policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all taxable income and net realized capital gains, if any, to shareholders. Therefore, no federal income tax provisions are required. Tax years for the prior three fiscal years remain subject to examination by federal and state tax authorities. The amounts and characterizations of distributions to shareowners for financial reporting purposes are determined in accordance with federal income tax rules. Therefore, the sources of the Funds' distributions may be shown in the accompanying financial statements as from or in excess of net investment income or as from net realized gain on investment transactions, 72 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 or as from paid-in capital, depending on the type of book/tax differences that may exist. The Pioneer Ibbotson Conservative, Moderate, Growth and Aggressive Allocation Funds have net capital loss carryforwards of $4,237,238, $38,836,633, $50,280,043, and $35,819,049, respectively, of which the following amounts will expire in between 2017 and 2019 if not utilized: -------------------------------------------------------------------------------- Conservative Moderate Growth Aggressive Fund Fund Fund Fund -------------------------------------------------------------------------------- 2017 $ -- $ 724,275 $ 2,604,757 $ 2,209,010 2018 4,237,238 36,226,123 43,117,411 32,150,758 2019 -- 1,886,235 4,557,875 1,459,281 -------------------------------------------------------------------------------- $4,237,238 $38,836,633 $50,280,043 $35,819,049 ================================================================================ At July 31, 2012, the Funds made reclassifications as listed below. These reclassifications have no impact on the net asset values of the respective Funds and are designed to present the Funds' capital accounts on a tax basis. -------------------------------------------------------------------------------- Undistributed Net Accumulated Paid in Investment Realized Fund Capital Income (Loss) Gain (Loss) -------------------------------------------------------------------------------- Conservative Fund $-- $ 94,562 $ (94,562) Moderate Fund -- 438,240 (438,240) Growth Fund -- 529,513 (529,513) Aggressive Fund -- 272,370 (272,370) The tax character of distributions paid during the year ended July 31, 2012 was as follows: -------------------------------------------------------------------------------- Ordinary Long-Term Fund Income Capital Gains Total -------------------------------------------------------------------------------- Conservative Fund $1,629,458 $-- $1,629,458 Moderate Fund 4,066,485 -- 4,066,485 Growth Fund 3,135,805 -- 3,135,805 Aggressive Fund 1,149,532 -- 1,149,532 The tax character of distributions paid during the year ended July 31, 2011 was as follows: -------------------------------------------------------------------------------- Ordinary Long-Term Fund Income Capital Gains Total -------------------------------------------------------------------------------- Conservative Fund $1,367,607 $-- $1,367,607 Moderate Fund 3,429,688 -- 3,429,688 Growth Fund 2,123,897 -- 2,123,897 Aggressive Fund 520,295 -- 520,295 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 73 The following table shows the components of distributable earnings on a federal income tax basis at July 31, 2012: ------------------------------------------------------------------------------------------------------- Undistributed Other Book/Tax Net Unrealized Ordinary Capital Loss Late Year Temporary Appreciation Fund Income Carryforward Losses Differences Depreciation ------------------------------------------------------------------------------------------------------- Conservative Fund $ 945,174 $ (4,237,238) $ (67,815) $ (975,367) $ 5,803,800 Moderate Fund 3,415,089 (38,836,633) (253,376) (2,977,636) 24,271,913 Growth Fund 2,715,458 (50,280,043) (177,058) (1,740,312) 28,665,370 Aggressive Fund 934,352 (35,819,049) (63,908) (1,694,766) 18,488,717 The differences between book-basis and tax-basis net unrealized gains are attributable to the tax deferral of losses on wash sales. C. Fund Shares The Funds record sales and repurchases of Fund shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Funds and a wholly owned indirect subsidiary of UniCredit S.p.A. (UniCredit), earned the following in underwriting commissions on the sale of Class A shares during the year ended July 31, 2012: -------------------------------------------------------------------------------- Fund Amount -------------------------------------------------------------------------------- Conservative Fund $22,486 Moderate Fund $37,667 Growth Fund $59,026 Aggressive Fund $39,216 D. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on its respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A, Class B and Class C shares of each Fund, respectively (see Note 4). Class Y shares do not pay distribution fees. All expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services are allocated among the class of shares based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by each of the Funds with respect to each class of shares are calculated in the same manner and at the same time, except that net investment income dividends to Class A, Class B, Class C and Class Y shares of each Fund can reflect different transfer agent and distribution expense rates. 74 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 E. Risks Some of the underlying funds can invest in either high yield securities or small/emerging growth companies. Investments in these types of securities generally are subject to greater volatility than either higher-grade securities or more-established companies in more developed markets, respectively. The Funds' prospectus contains unaudited information regarding the Fund's principal risks. Please refer to that document when considering the Funds' principal risks. 2. Management Agreement PIM, a wholly owned indirect subsidiary of UniCredit, manages the Funds' portfolios. Management fees are calculated daily at the following annual rates for each Fund: On assets up to $2.5 billion 0.13% on investments in underlying funds managed by Pioneer (and cash); and 0.17% on other investments On the next $1.5 billion 0.11% on investments in underlying funds managed by Pioneer (and cash); and 0.14% on other investments On the next $1.5 billion 0.10% on investments in underlying funds managed by Pioneer (and cash); and 0.12% on other investments On the next $1.5 billion 0.08% on investments in underlying funds managed by Pioneer (and cash); and 0.10% on other investments Over $7 billion 0.08% on investments in underlying funds managed by Pioneer (and cash); and 0.09% on other investments Each Fund may pay management fees equal to 0.17% of average daily net assets attributable to investments in underlying funds that are not managed by Pioneer. For the year ended July 31, 2012, the effective management fee for each Fund was equivalent to 0.13% of the Fund's average daily net assets. Fees waived and expenses reimbursed during the period ended July 31, 2012 are reflected in the Statement of Operations. PIM has entered into a sub-advisory agreement with Ibbotson Associates, LLC. PIM, not the Funds, pays a portion of the fee it receives from each Fund to Ibbotson Associates as compensation for its services to the Funds. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Funds as administrative reimbursements. Included in "Due to affiliates" reflected on the Statements of Assets and Liabilities are the following amounts payable to PIM at July 31, 2012: -------------------------------------------------------------------------------- Fund Amount -------------------------------------------------------------------------------- Conservative Fund $11,099 Moderate Fund $34,137 Growth Fund $36,627 Aggressive Fund $20,067 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 75 PIM has contractually agreed to limit ordinary operating expenses to the extent required to reduce fund expenses, other than underlying fund fees and expenses, as follows. These expense limitations are in effect through December 1, 2013. There can be no assurance that PIM will extend the expense limitation agreement for a class of shares beyond the date referred to above: -------------------------------------------------------------------------------- Fund Class A Class B Class C -------------------------------------------------------------------------------- Conservative Fund 0.78% 1.68% 1.68% Moderate Fund 0.74% 1.52% 1.52% Growth Fund 0.79% 1.57% 1.57% Aggressive Fund 0.85% 1.64% 1.64% 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Funds at negotiated rates. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities are the following amounts of transfer agent fees payable to PIMSS at July 31, 2012: -------------------------------------------------------------------------------- Fund Amount -------------------------------------------------------------------------------- Conservative Fund $11,986 Moderate Fund $40,191 Growth Fund $54,180 Aggressive Fund $37,791 4. Distribution Plan The Funds have adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to Class A, Class B and Class C shares. Pursuant to the Plan, each Fund pays PFD 0.25% of the Fund's average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with respect to Class A shares. Pursuant to the Plan, each Fund also pays PFD 1.00% of the average daily net assets attributable to Class B and Class C shares. The fee for Class B and C consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class B and Class C shares. Included in "Due to affiliates" reflected on the Statements of Assets and Liabilities are the following amounts in distribution fees payable to PFD at July 31, 2012. -------------------------------------------------------------------------------- Fund Amount -------------------------------------------------------------------------------- Conservative Fund $28,164 Moderate Fund $89,422 Growth Fund $93,933 Aggressive Fund $45,153 76 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 In addition, redemptions of each class of shares (except Class Y shares) may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on redemptions of certain net asset value purchases of Class A shares within 12 months of purchase. Class B shares that are redeemed within five years of purchase are subject to a CDSC at declining rates beginning at 4.00%, based on the lower of cost or market value of shares being redeemed. Redemptions of Class C shares within one year of purchase are subject to a CDSC of 1.00% based on the lower of cost or market value of shares being redeemed. Shares purchased as part of an exchange remain subject to any CDSC that applied to the original purchase of those shares. There is no CDSC for Class Y shares. Proceeds from the CDSCs are paid to PFD. For the year ended July 31, 2012, the following CDSCs were paid to PFD: -------------------------------------------------------------------------------- Fund Amount -------------------------------------------------------------------------------- Conservative Fund $ 4,203 Moderate Fund $21,390 Growth Fund $19,403 Aggressive Fund $ 9,867 5. Transactions in Underlying Funds -- Affiliated Issuers An affiliated issuer may be considered one in which each Fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, each Fund assumes the following to be affiliated issuers: Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 77 Pioneer Ibbotson Conservative Allocation Fund ------------------------------------------------------------------------------------------------------- Beginning Acquisitions Dispositions Ending Underlying Funds (Affiliated) Shares Shares Shares Shares ------------------------------------------------------------------------------------------------------- Pioneer Absolute Return Credit Fund 15,337 248,145 (2,511) 260,971 Pioneer Bond Fund 1,466,392 107,062 (340,491) 1,232,963 Pioneer Cullen Value Fund 66,843 5,949 (2,843) 69,949 Pioneer Disciplined Growth Fund 179,265 9,293 (61,205) 127,353 Pioneer Disciplined Value Fund 277,977 18,920 (125,370) 171,527 Pioneer Emerging Markets Fund 19,273 6,684 (628) 25,329 Pioneer Equity Income Fund 39,653 7,175 (17,313) 29,515 Pioneer Floating Rate Fund 91,453 2,820 (2,881) 91,392 Pioneer Fund 59,687 4,823 (13,427) 51,083 Pioneer Fundamental Growth Fund 103,093 3,310 (7,993) 98,410 Pioneer Global Aggregate Bond Fund 99,971 11,953 (457) 111,467 Pioneer Global Equity Fund 188,353 68,094 (7,279) 249,168 Pioneer Global High Yield Fund 359,271 87,587 (56,979) 389,879 Pioneer Growth Opportunities Fund 20,505 2,423 (1,427) 21,501 Pioneer High Yield Fund 180,699 169,480 (102,015) 248,164 Pioneer International Value Fund 122,705 85,629 (2,790) 205,544 Pioneer Mid Cap Value Fund 54,400 6,517 (2,807) 58,110 Pioneer Multi-Asset Ultrashort Income Fund 3,758 59,409 (669) 62,498 Pioneer Real Estate Shares 14,335 18,590 (14,282) 18,643 Pioneer Research Fund 127,269 5,500 (10,250) 122,519 Pioneer Select Mid Cap Growth Fund 32,343 2,766 (2,590) 32,519 Pioneer Short Term Income Fund 1,558,396 109,021 (335,996) 1,331,421 Pioneer Strategic Income Fund 400,208 57,123 (13,365) 443,966 ------------------------------------------------------------------------------------------------------- Realized Capital Gain Dividend Ending Underlying Funds (Affiliated) Gain (Loss) Distributions Income Value ------------------------------------------------------------------------------------------------------- Pioneer Absolute Return Credit Fund $ (751) $ -- $ 137,815 $ 2,539,244 Pioneer Bond Fund 89,463 71,614 618,257 12,021,392 Pioneer Cullen Value Fund (3,812) -- 25,671 1,282,856 Pioneer Disciplined Growth Fund (62,240) 132,782 8,599 1,287,542 Pioneer Disciplined Value Fund (57,285) 115,839 26,358 1,476,849 Pioneer Emerging Markets Fund (3,505) 25,579 -- 617,019 Pioneer Equity Income Fund (1,825) -- 34,170 811,970 Pioneer Floating Rate Fund (739) -- 30,148 629,691 Pioneer Fund (28,109) -- 39,715 2,072,958 Pioneer Fundamental Growth Fund 17,999 30,764 6,723 1,294,087 Pioneer Global Aggregate Bond Fund (156) 2,501 36,919 1,268,494 Pioneer Global Equity Fund (3,929) -- 35,703 2,364,603 Pioneer Global High Yield Fund 18,659 -- 289,949 3,750,636 Pioneer Growth Opportunities Fund 2,219 -- -- 624,186 Pioneer High Yield Fund (26,025) -- 101,154 2,464,265 Pioneer International Value Fund (3,272) -- 58,434 3,539,474 Pioneer Mid Cap Value Fund (5,058) -- 16,360 1,258,092 Pioneer Multi-Asset Ultrashort Income Fund (35) -- 11,408 627,476 Pioneer Real Estate Shares 129,681 -- 2,834 464,386 Pioneer Research Fund 11,961 -- 10,832 1,285,228 Pioneer Select Mid Cap Growth Fund 2,768 -- -- 628,913 Pioneer Short Term Income Fund (44,640) -- 423,386 12,861,529 Pioneer Strategic Income Fund (3,660) 37,774 230,603 4,910,259 ---------- ---------- ---------- ------------ $ 27,709 $ 416,853 $2,145,038 $ 60,081,149 ========== ========== ========== ============ 78 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Pioneer Ibbotson Moderate Allocation Fund ------------------------------------------------------------------------------------------------------- Beginning Acquisitions Dispositions Ending Underlying Funds (Affiliated) Shares Shares Shares Shares ------------------------------------------------------------------------------------------------------- Pioneer Absolute Return Credit Fund -- 520,922 -- 520,922 Pioneer Bond Fund 3,134,957 7,179 (787,963) 2,354,173 Pioneer Cullen Value Fund 474,048 469 (73,981) 400,536 Pioneer Disciplined Growth Fund 1,071,990 -- (332,669) 739,321 Pioneer Disciplined Value Fund 1,243,683 245 (357,972) 885,956 Pioneer Emerging Markets Fund 274,513 19,688 (819) 293,382 Pioneer Equity Income Fund 173,921 23,726 (23,053) 174,594 Pioneer Fund 317,329 413 (74,740) 243,002 Pioneer Fundamental Growth Fund 749,298 4,341 (168,091) 585,548 Pioneer Global Aggregate Bond Fund 124,697 142,155 -- 266,852 Pioneer Global Equity Fund 1,444,620 88,726 (53,520) 1,479,826 Pioneer Global High Yield Fund 837,725 149,921 (208,429) 779,217 Pioneer Growth Opportunities Fund 221,462 578 (15,421) 206,619 Pioneer High Yield Fund 398,476 155,797 (135,201) 419,072 Pioneer International Value Fund 762,546 162,208 (10,597) 914,157 Pioneer Mid Cap Value Fund 477,170 41,223 (1,322) 517,071 Pioneer Multi-Asset Ultrashort Income Fund -- 141,624 -- 141,624 Pioneer Oak Ridge Small Cap Growth Fund 202,918 1,611 (2,256) 202,273 Pioneer Real Estate Shares 218,374 25,422 (116,975) 126,821 Pioneer Research Fund 452,627 -- (54,558) 398,069 Pioneer Select Mid Cap Growth Fund 232,368 258 (21,305) 211,321 Pioneer Short Term Income Fund 3,167,271 13,187 (761,215) 2,419,243 Pioneer Strategic Income Fund 401,852 43,103 (39,273) 405,682 ------------------------------------------------------------------------------------------------------- Realized Capital Gain Dividend Ending Underlying Funds (Affiliated) Gain (Loss) Distributions Income Value ------------------------------------------------------------------------------------------------------- Pioneer Absolute Return Credit Fund $ -- $ -- $ 248,614 $ 5,068,569 Pioneer Bond Fund 389,882 140,959 1,221,389 22,953,183 Pioneer Cullen Value Fund 70,084 -- 167,919 7,345,839 Pioneer Disciplined Growth Fund (288,104) 734,801 52,978 7,474,535 Pioneer Disciplined Value Fund (330,738) 526,750 120,460 7,628,084 Pioneer Emerging Markets Fund (529) 315,856 -- 7,146,796 Pioneer Equity Income Fund (7,614) -- 155,658 4,803,072 Pioneer Fund 118,331 -- 190,112 9,861,025 Pioneer Fundamental Growth Fund 248,992 209,801 45,293 7,699,957 Pioneer Global Aggregate Bond Fund -- 3,954 74,450 3,036,776 Pioneer Global Equity Fund 65,494 -- 252,171 14,043,546 Pioneer Global High Yield Fund (160,915) -- 582,720 7,496,068 Pioneer Growth Opportunities Fund 63,260 -- -- 5,998,155 Pioneer High Yield Fund (183,985) -- 196,291 4,161,382 Pioneer International Value Fund 15,027 -- 273,933 15,741,777 Pioneer Mid Cap Value Fund (5,358) -- 139,404 11,194,578 Pioneer Multi-Asset Ultrashort Income Fund -- -- 19,944 1,421,903 Pioneer Oak Ridge Small Cap Growth Fund (6,759) 291,087 -- 5,736,467 Pioneer Real Estate Shares 958,843 -- 63,879 3,159,109 Pioneer Research Fund 22,496 -- 36,084 4,175,741 Pioneer Select Mid Cap Growth Fund 29,707 -- -- 4,086,953 Pioneer Short Term Income Fund (100,601) -- 824,067 23,369,888 Pioneer Strategic Income Fund 3,783 35,227 214,705 4,486,847 ---------- ---------- ---------- ------------ $ 901,296 $2,258,435 $4,880,071 $188,090,250 ========== ========== ========== ============ Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 79 Pioneer Ibbotson Growth Allocation Fund ------------------------------------------------------------------------------------------------------- Beginning Acquisitions Dispositions Ending Underlying Funds (Affiliated) Shares Shares Shares Shares ------------------------------------------------------------------------------------------------------- Pioneer Bond Fund 2,497,038 49,938 (483,981) 2,062,995 Pioneer Cullen Value Fund 620,934 436 (153,135) 468,235 Pioneer Disciplined Growth Fund 1,209,500 125 (242,364) 967,261 Pioneer Disciplined Value Fund 1,270,424 15,718 (114,654) 1,171,488 Pioneer Emerging Markets Fund 417,673 51,931 (27,538) 442,066 Pioneer Equity Income Fund 319,960 1,107 (37,344) 283,723 Pioneer Fund 371,368 1,969 (120,807) 252,530 Pioneer Fundamental Growth Fund 1,116,936 12,279 (259,573) 869,642 Pioneer Global Aggregate Bond Fund 42,686 264,689 -- 307,375 Pioneer Global Equity Fund 1,842,604 57,301 (146,918) 1,752,987 Pioneer Global High Yield Fund 491,324 -- (46,656) 444,668 Pioneer Government Income Fund 817 -- (817) -- Pioneer Growth Opportunities Fund 316,387 6,133 (34,065) 288,455 Pioneer High Yield Fund 124,182 53,022 -- 177,204 Pioneer Independence Fund 1,429 -- (769) 660 Pioneer International Value Fund 1,040,993 282,300 -- 1,323,293 Pioneer Mid Cap Value Fund 682,791 9,819 (43,349) 649,261 Pioneer Oak Ridge Large Cap Growth Fund 1,362 -- (765) 597 Pioneer Oak Ridge Small Cap Growth Fund 207,781 6,046 (49) 213,778 Pioneer Real Estate Shares 284,870 14,630 (66,649) 232,851 Pioneer Research Fund 717,771 -- (71,193) 646,578 Pioneer Select Mid Cap Growth Fund 248,680 45,939 (4,415) 290,204 Pioneer Short Term Income Fund 1,622,876 194,540 (49,053) 1,768,363 Pioneer Strategic Income Fund 403,597 20,489 (14,797) 409,289 Pioneer Value Fund 1,602 -- (961) 641 ------------------------------------------------------------------------------------------------------- Realized Capital Gain Dividend Ending Underlying Funds (Affiliated) Gain (Loss) Distributions Income Value ------------------------------------------------------------------------------------------------------- Pioneer Bond Fund $ 253,970 $ 103,932 $ 958,827 $ 20,114,197 Pioneer Cullen Value Fund (42,951) -- 207,247 8,587,436 Pioneer Disciplined Growth Fund (178,237) 912,648 66,838 9,779,013 Pioneer Disciplined Value Fund (82,366) 619,431 144,079 10,086,516 Pioneer Emerging Markets Fund (58,148) 451,180 -- 10,768,733 Pioneer Equity Income Fund (85,553) -- 255,972 7,805,230 Pioneer Fund (149,542) -- 211,692 10,247,651 Pioneer Fundamental Growth Fund 692,008 330,179 71,558 11,435,787 Pioneer Global Aggregate Bond Fund -- 5,817 94,378 3,497,922 Pioneer Global Equity Fund 162,511 -- 312,969 16,635,846 Pioneer Global High Yield Fund 99,774 -- 378,452 4,277,707 Pioneer Government Income Fund 842 -- 9 -- Pioneer Growth Opportunities Fund 78,131 -- -- 8,373,856 Pioneer High Yield Fund -- -- 87,703 1,759,632 Pioneer Independence Fund 3,941 -- -- 7,971 Pioneer International Value Fund -- -- 385,466 22,787,111 Pioneer Mid Cap Value Fund (213,833) -- 191,813 14,056,492 Pioneer Oak Ridge Large Cap Growth Fund 2,667 -- -- 7,903 Pioneer Oak Ridge Small Cap Growth Fund (237) 301,934 -- 6,062,755 Pioneer Real Estate Shares (12,129) -- 125,454 5,800,317 Pioneer Research Fund 24,897 -- 58,281 6,782,602 Pioneer Select Mid Cap Growth Fund 408 -- -- 5,612,554 Pioneer Short Term Income Fund (6,554) -- 553,967 17,082,391 Pioneer Strategic Income Fund (4,868) 37,645 224,370 4,526,734 Pioneer Value Fund 1,766 -- 168 7,528 ---------- ---------- ---------- ------------ $ 486,497 $2,762,766 $4,329,243 $206,103,884 ========== ========== ========== ============ 80 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Pioneer Ibbotson Aggressive Allocation Fund ------------------------------------------------------------------------------------------------------- Beginning Acquisitions Dispositions Ending Underlying Funds (Affiliated) Shares Shares Shares Shares ------------------------------------------------------------------------------------------------------- Pioneer Bond Fund 863,769 1,171 (123,421) 741,519 Pioneer Cullen Value Fund 358,061 104 (104,789) 253,376 Pioneer Disciplined Growth Fund 587,626 24,514 (134,750) 477,390 Pioneer Disciplined Value Fund 670,047 56,211 (84,861) 641,397 Pioneer Emerging Markets Fund 288,266 39,318 (3,889) 323,695 Pioneer Equity Income Fund 204,864 21,530 (66,175) 160,219 Pioneer Fund 219,373 121 (69,392) 150,102 Pioneer Fundamental Growth Fund 693,239 4,459 (233,422) 464,276 Pioneer Global Equity Fund 1,209,231 37,182 (109,288) 1,137,125 Pioneer Growth Opportunities Fund 224,279 70 (53,114) 171,235 Pioneer High Yield Fund 408 -- (408) -- Pioneer Independence Fund 280 -- (280) -- Pioneer International Value Fund 904,380 132,315 (9,722) 1,026,973 Pioneer Mid Cap Value Fund 601,898 12,412 (78,210) 536,100 Pioneer Oak Ridge Small Cap Growth Fund 144,272 12,768 -- 157,040 Pioneer Real Estate Shares 238,179 12,690 (66,659) 184,210 Pioneer Research Fund 407,172 -- (99,759) 307,413 Pioneer Select Mid Cap Growth Fund 210,170 21,002 (4,622) 226,550 Pioneer Short Term Income Fund -- 225,815 -- 225,815 Pioneer Strategic Income Fund 228,384 857 (11,622) 217,619 ------------------------------------------------------------------------------------------------------- Realized Capital Gain Dividend Ending Underlying Funds (Affiliated) Gain (Loss) Distributions Income Value ------------------------------------------------------------------------------------------------------- Pioneer Bond Fund $ 100,891 $ 38,053 $ 346,937 $ 7,229,807 Pioneer Cullen Value Fund 77,751 -- 116,228 4,646,910 Pioneer Disciplined Growth Fund (79,553) 464,325 34,073 4,826,413 Pioneer Disciplined Value Fund (58,946) 323,231 78,857 5,522,426 Pioneer Emerging Markets Fund 6,725 331,771 -- 7,885,216 Pioneer Equity Income Fund (51,143) -- 162,271 4,407,638 Pioneer Fund (185,370) -- 124,116 6,091,137 Pioneer Fundamental Growth Fund 905,679 198,853 42,673 6,105,226 Pioneer Global Equity Fund 168,645 -- 205,208 10,791,318 Pioneer Growth Opportunities Fund 247,222 -- -- 4,970,965 Pioneer High Yield Fund 1,110 -- 6 -- Pioneer Independence Fund 1,594 -- -- -- Pioneer International Value Fund (19,799) -- 316,208 17,684,476 Pioneer Mid Cap Value Fund (407,208) -- 165,461 11,606,562 Pioneer Oak Ridge Small Cap Growth Fund -- 218,004 -- 4,453,662 Pioneer Real Estate Shares 544,084 -- 97,506 4,588,681 Pioneer Research Fund 72,126 -- 32,586 3,224,762 Pioneer Select Mid Cap Growth Fund 765 -- -- 4,381,471 Pioneer Short Term Income Fund -- -- 45,331 2,181,377 Pioneer Strategic Income Fund (3,554) 21,185 124,872 2,406,871 ---------- ---------- ---------- ------------ $1,321,019 $1,595,422 $1,892,333 $113,004,918 ========== ========== ========== ============ Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 81 Report of Independent Registered Public Accounting Firm To the Board of Trustees and the Shareowners of Pioneer Ibbotson Asset Allocation Series: -------------------------------------------------------------------------------- We have audited the accompanying statements of assets and liabilities of Pioneer Ibbotson Asset Allocation Series (the "Funds", comprising, respectively, the Pioneer Ibbotson Conservative Allocation Fund, the Pioneer Ibbotson Moderate Allocation Fund, the Pioneer Ibbotson Growth Allocation Fund and the Pioneer Ibbotson Aggressive Allocation Fund), including the schedules of investments, as of July 31, 2012, and the related statements of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, and the financial highlights for each of the periods indicated therein. These financial statements and financial highlights are the responsibility of the Funds' management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. We were not engaged to perform an audit of the Funds' internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Funds' internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements and financial highlights, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of July 31, 2012 by correspondence with the custodian. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of each of the respective Funds constituting the Pioneer Ibbotson Asset Allocation Series at July 31, 2012, the results of their operations for the year then ended, the changes in their net assets for each of the two years in the period then ended, and the financial highlights for each of the periods indicated therein, in conformity with U.S. generally accepted accounting principles. /s/Ernst + Young LLP Boston, Massachusetts September 25, 2012 82 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Trustees, Officers and Service Providers Investment Adviser Pioneer Investment Management, Inc. Investment Subadviser Ibbotson Associates, Inc. Custodian and Sub-Administrator Brown Brothers Harriman & Co. Independent Registered Public Accounting Firm Ernst & Young LLP Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Bingham McCutchen LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy voting policies and procedures of the Funds are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Funds voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at us.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at www.sec.gov. Trustees and Officers The Fund's Trustees and Officers are listed on the following pages, together with their principal occupations during at least the past five years. Trustees who are interested persons of the Fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the Fund are referred to as Independent Trustees. Each of the Trustees serves as a trustee of each of the 56 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). The address for all Trustees and all officers of the Fund is 60 State Street, Boston, Massachusetts 02109. The Statement of Additional Information of the Funds includes additional information about the Trustees and is available, without charge, upon request, by calling 1-800-225-6292. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 83 Independent Trustees ----------------------------------------------------------------------------- Position Held Length of Service Name and Age with the Fund and Term of Office ----------------------------------------------------------------------------- Thomas J. Perna (61) Chairman of the Board Trustee since 2006. and Trustee Serves until a successor trustee is elected or earlier retirement or removal. ----------------------------------------------------------------------------- David R. Bock (68) Trustee Trustee since 2005. Serves until a successor trustee is elected or earlier retirement or removal. ----------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation Held by this Trustee ---------------------------------------------------------------------------------------------------------------------------------- Thomas J. Perna (61) Chairman and Chief Executive Officer, Quadriserv, Inc. (technol- Director, Broadridge Finan- ogy products for securities lending industry) (2008 - present); cial Solutions, Inc. (investor private investor (2004 - 2008); and Senior Executive Vice Presi- communications and securi- dent, The Bank of New York (financial and securities services) ties processing provider for (1986 - 2004) financial services industry) (2009 - present); Director, Quadriserv, Inc. (2005 - present); and Commis- sioner, New Jersey State Civil Service Commission (2011 - present) ---------------------------------------------------------------------------------------------------------------------------------- David R. Bock (68) Managing Partner, Federal City Capital Advisors (corporate advi- Director of Enterprise Com- sory services company) (1997 - 2004 and 2008 - present); munity Investment, Inc. Interim Chief Executive Officer, Oxford Analytica, Inc. (privately (privately held affordable held research and consulting company) (2010); Executive Vice housing finance company) President and Chief Financial Officer, I-trax, Inc. (publicly traded (1985 - 2010); Director of health care services company) (2004 - 2007); and Executive Oxford Analytica, Inc. (2008 Vice President and Chief Financial Officer, Pedestal Inc. (internet- - present); Director of The based mortgage trading company) (2000 - 2002) Swiss Helvetia Fund, Inc. (closed-end fund) (2010 - present); and Director of New York Mortgage Trust (publicly traded mortgage REIT) (2004 - 2009, 2012 - present) ---------------------------------------------------------------------------------------------------------------------------------- 84 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 ----------------------------------------------------------------------------- Position Held Length of Service Name and Age with the Fund and Term of Office ----------------------------------------------------------------------------- Mary K. Bush (64) Trustee Trustee since 2004. Serves until a successor trustee is elected or earlier retirement or removal. ----------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation Held by this Trustee ----------------------------------------------------------------------------------------------------------------------------------- Mary K. Bush (64) Chairman, Bush International, LLC (international financial advi- Director of Marriott Interna- sory firm) (1991 - present); Senior Managing Director, Brock tional, Inc. (2008 - pres- Capital Group, LLC (strategic business advisors) (2010 - pres- ent); Director of Discover ent); Managing Director, Federal Housing Finance Board (over- Financial Services (credit sight of Federal Home Loan Bank system) (1989 - 1991); Vice card issuer and electronic President and Head of International Finance, Federal National payment services) (2007 - Mortgage Association (1988 - 1989); U.S. Alternate Executive present); Former Director of Director, International Monetary Fund (1984 - 1988); Executive Briggs & Stratton Co. Assistant to Deputy Secretary of the U.S. Treasury, U.S. Treasury (engine manufacturer) Department (1982 - 1984); and Vice President and Team (2004 - 2009); Former Leader in Corporate Banking, Bankers Trust Co. (1976 - 1982) Director of UAL Corporation (airline holding company) (2006 - 2010); Director of ManTech International Cor- poration (national security, defense, and intelligence technology firm) (2006 - present); Member, Board of Governors, Investment Com- pany Institute (2007 - present); Member, Board of Governors, Independent Directors Council (2007 - present); Former Director of Brady Corporation (2000 - 2007); Former Director of Mortgage Guaranty Insurance Corporation Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 85 Independent Trustees (continued) ----------------------------------------------------------------------------- Position Held Length of Service Name and Age with the Fund and Term of Office ----------------------------------------------------------------------------- Mary K. Bush (continued) ----------------------------------------------------------------------------- Benjamin M. Friedman (67) Trustee Trustee since 2008. Serves until a successor trustee is elected or earlier retirement or removal. ----------------------------------------------------------------------------- Margaret B.W. Graham (65) Trustee Trustee since 2004. Serves until a successor trustee is elected or earlier retirement or removal. ----------------------------------------------------------------------------- Marguerite A. Piret (64) Trustee Trustee since 2004. Serves until a successor trustee is elected or earlier retirement or removal. ----------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation Held by this Trustee ----------------------------------------------------------------------------------------------------------------------------------- Mary K. Bush (continued) (1991 - 2006); Former Director of Millennium Chemicals, Inc. (commodity chemicals) (2002 - 2005); Former Director, R.J. Reyn- olds Tobacco Holdings, Inc. (tobacco) (1999 - 2005); and Former Director of Texaco, Inc. (1997 - 2001) ----------------------------------------------------------------------------------------------------------------------------------- Benjamin M. Friedman (67) William Joseph Maier Professor of Political Economy, Harvard Trustee, Mellon Institutional University (1972 - present) Funds Investment Trust and Mellon Institutional Funds Master Portfolio (oversaw 17 portfolios in fund complex) (1989 - 2008) ----------------------------------------------------------------------------------------------------------------------------------- Margaret B.W. Graham (65) Founding Director, Vice President and Corporate Secretary, The None Winthrop Group, Inc. (consulting firm) (1982 - present); Desau- tels Faculty of Management, McGill University (1999 - present); and Manager of Research Operations and Organizational Learn- ing, Xerox PARC, Xerox's advance research center (1990 - 1994) ----------------------------------------------------------------------------------------------------------------------------------- Marguerite A. Piret (64) President and Chief Executive Officer, Newbury, Piret & Company, Director of New America Inc. (investment banking firm) (1981 - present) High Income Fund, Inc. (closed-end investment company) (2004 - present); and member, Board of Gov- ernors, Investment Company Institute (2000 - 2006) ----------------------------------------------------------------------------------------------------------------------------------- 86 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 ----------------------------------------------------------------------------- Position Held Length of Service Name and Age with the Fund and Term of Office ----------------------------------------------------------------------------- Stephen K. West (83) Trustee Trustee since 2004. Serves until a successor trustee is elected or earlier retirement or removal. ----------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation Held by this Trustee ----------------------------------------------------------------------------------------------------------------------------------- Stephen K. West (83) Senior Counsel, Sullivan & Cromwell LLP (law firm) (1998 - Director, The Swiss Helvetia present); and Partner, Sullivan & Cromwell LLP (prior to 1998) Fund, Inc. (closed-end investment company); and Director, Invesco, Ltd. (formerly AMVESCAP, PLC) (investment manager) (1997 - 2005) ----------------------------------------------------------------------------------------------------------------------------------- Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 87 Interested Trustees ------------------------------------------------------------------------------- Position Held Length of Service Name and Age with the Fund and Term of Office ------------------------------------------------------------------------------- John F. Cogan, Jr. (86)* Trustee and President Trustee since 2004. Serves until a successor trustee is elected or earlier retirement or removal. ------------------------------------------------------------------------------- Daniel K. Kingsbury (53)* Trustee and Executive Trustee since 2007. Vice President Serves until a successor trustee is elected or earlier retirement or removal. ------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation Held by this Trustee ----------------------------------------------------------------------------------------------------------------------------------- John F. Cogan, Jr. (86)* Non-Executive Chairman and a director of Pioneer Investment None Management USA Inc. ("PIM-USA"); Chairman and a director of Pioneer; Chairman and Director of Pioneer Institutional Asset Management, Inc. (since 2006); Director of Pioneer Alternative Investment Management Limited (Dublin) (until October 2011); President and a director of Pioneer Alternative Investment Man- agement (Bermuda) Limited and affiliated funds; Deputy Chair- man and a director of Pioneer Global Asset Management S.p.A. ("PGAM") (until April 2010); Director of Nano-C, Inc. (since 2003); Director of Cole Management Inc. (2004 - 2011); Direc- tor of Fiduciary Counseling, Inc. (until December 2011); Presi- dent of all of the Pioneer Funds; and Retired Partner, Wilmer Cutler Pickering Hale and Dorr LLP ----------------------------------------------------------------------------------------------------------------------------------- Daniel K. Kingsbury (53)* Director, CEO and President of PIM-USA (since February 2007); None Director and President of Pioneer and Pioneer Institutional Asset Management, Inc. (since February 2007); Executive Vice Presi- dent of all of the Pioneer Funds (since March 2007); Director of PGAM (2007 - 2010); Head of New Europe Division, PGAM (2000 - 2005); and Head of New Markets Division, PGAM (2005 - 2007) ----------------------------------------------------------------------------------------------------------------------------------- * Mr. Cogan and Mr. Kingsbury are Interested Trustees because they are officers or directors of the Fund's investment adviser and certain of its affiliates. 88 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 Fund Officers -------------------------------------------------------------------------- Position Held Length of Service Name and Age with the Fund and Term of Office -------------------------------------------------------------------------- Christopher J. Kelley (47) Secretary Since 2010. Serves at the discretion of the Board. -------------------------------------------------------------------------- Carol B. Hannigan (51) Assistant Secretary Since 2010. Serves at the discretion of the Board. -------------------------------------------------------------------------- Thomas Reyes (49) Assistant Secretary Since 2010. Serves at the discretion of the Board. -------------------------------------------------------------------------- Mark E. Bradley (52) Treasurer Since 2008. Serves at the discretion of the Board. -------------------------------------------------------------------------- Luis I. Presutti (47) Assistant Treasurer Since 2004. Serves at the discretion of the Board. -------------------------------------------------------------------------- Gary Sullivan (54) Assistant Treasurer Since 2004. Serves at the discretion of the Board. -------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation Held by this Officer ----------------------------------------------------------------------------------------------------------------------------------- Christopher J. Kelley (47) Vice President and Associate General Counsel of Pioneer since None January 2008 and Secretary of all of the Pioneer Funds since June 2010; Assistant Secretary of all of the Pioneer Funds from September 2003 to May 2010; and Vice President and Senior Counsel of Pioneer from July 2002 to December 2007 ----------------------------------------------------------------------------------------------------------------------------------- Carol B. Hannigan (51) Fund Governance Director of Pioneer since December 2006 and None Assistant Secretary of all the Pioneer Funds since June 2010; Manager -- Fund Governance of Pioneer from December 2003 to November 2006; and Senior Paralegal of Pioneer from January 2000 to November 2003 ----------------------------------------------------------------------------------------------------------------------------------- Thomas Reyes (49) Counsel of Pioneer since June 2007 and Assistant Secretary of None all the Pioneer Funds since June 2010; and Vice President and Counsel at State Street Bank from October 2004 to June 2007 ----------------------------------------------------------------------------------------------------------------------------------- Mark E. Bradley (52) Vice President -- Fund Treasury of Pioneer; Treasurer of all of the None Pioneer Funds since March 2008; Deputy Treasurer of Pioneer from March 2004 to February 2008; and Assistant Treasurer of all of the Pioneer Funds from March 2004 to February 2008 ----------------------------------------------------------------------------------------------------------------------------------- Luis I. Presutti (47) Assistant Vice President -- Fund Treasury of Pioneer; and None Assistant Treasurer of all of the Pioneer Funds ----------------------------------------------------------------------------------------------------------------------------------- Gary Sullivan (54) Fund Accounting Manager -- Fund Treasury of Pioneer; and None Assistant Treasurer of all of the Pioneer Funds ----------------------------------------------------------------------------------------------------------------------------------- Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 89 Fund Officers (continued) -------------------------------------------------------------------------- Position Held Length of Service Name and Age with the Fund and Term of Office -------------------------------------------------------------------------- David F. Johnson (32) Assistant Treasurer Since 2009. Serves at the discretion of the Board. -------------------------------------------------------------------------- Jean M. Bradley (59) Chief Compliance Since 2010. Serves at Officer the discretion of the Board. -------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation Held by this Officer ----------------------------------------------------------------------------------------------------------------------------------- David F. Johnson (32) Fund Administration Manager -- Fund Treasury of Pioneer since None November 2008; Assistant Treasurer of all of the Pioneer Funds since January 2009; and Client Service Manager -- Institutional Investor Services at State Street Bank from March 2003 to March 2007 ----------------------------------------------------------------------------------------------------------------------------------- Jean M. Bradley (59) Chief Compliance Officer of Pioneer and of all the Pioneer Funds None since March 2010; Director of Adviser and Portfolio Compliance at Pioneer since October 2005; and Senior Compliance Officer for Columbia Management Advisers, Inc. from October 2003 to October 2005 ----------------------------------------------------------------------------------------------------------------------------------- 90 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 This page for your notes. Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 91 This page for your notes. 92 Pioneer Ibbotson Asset Allocation Series | Annual Report | 7/31/12 How to Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Write to us: -------------------------------------------------------------------------------- PIMSS P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our website: us.pioneerinvestments.com This report must be preceded or accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. ITEM 2. CODE OF ETHICS. (a) Disclose whether, as of the end of the period covered by the report, the registrant has adopted a code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party. If the registrant has not adopted such a code of ethics, explain why it has not done so. The registrant has adopted, as of the end of the period covered by this report, a code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer and controller. (b) For purposes of this Item, the term "code of ethics" means written standards that are reasonably designed to deter wrongdoing and to promote: (1) Honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal and professional relationships; (2) Full, fair, accurate, timely, and understandable disclosure in reports and documents that a registrant files with, or submits to, the Commission and in other public communications made by the registrant; (3) Compliance with applicable governmental laws, rules, and regulations; (4) The prompt internal reporting of violations of the code to an appropriate person or persons identified in the code; and (5) Accountability for adherence to the code. (c) The registrant must briefly describe the nature of any amendment, during the period covered by the report, to a provision of its code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, and that relates to any element of the code of ethics definition enumerated in paragraph (b) of this Item. The registrant must file a copy of any such amendment as an exhibit pursuant to Item 10(a), unless the registrant has elected to satisfy paragraph (f) of this Item by posting its code of ethics on its website pursuant to paragraph (f)(2) of this Item, or by undertaking to provide its code of ethics to any person without charge, upon request, pursuant to paragraph (f)(3) of this Item. The registrant has made no amendments to the code of ethics during the period covered by this report. (d) If the registrant has, during the period covered by the report, granted a waiver, including an implicit waiver, from a provision of the code of ethics to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, that relates to one or more of the items set forth in paragraph (b) of this Item, the registrant must briefly describe the nature of the waiver, the name of the person to whom the waiver was granted, and the date of the waiver. Not applicable. (e) If the registrant intends to satisfy the disclosure requirement under paragraph (c) or (d) of this Item regarding an amendment to, or a waiver from, a provision of its code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions and that relates to any element of the code of ethics definition enumerated in paragraph (b) of this Item by posting such information on its Internet website, disclose the registrant's Internet address and such intention. Not applicable. (f) The registrant must: (1) File with the Commission, pursuant to Item 10(a), a copy of its code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, as an exhibit to its annual report on this Form N-CSR (see attachment); (2) Post the text of such code of ethics on its Internet website and disclose, in its most recent report on this Form N-CSR, its Internet address and the fact that it has posted such code of ethics on its Internet website; or (3) Undertake in its most recent report on this Form N-CSR to provide to any person without charge, upon request, a copy of such code of ethics and explain the manner in which such request may be made. 	See Item 10(2) ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT. (a) (1) Disclose that the registrant's board of trustees has determined that the registrant either: (i) Has at least one audit committee financial expert serving on its audit committee; or (ii) Does not have an audit committee financial expert serving on its audit committee. The registrant's Board of Trustees has determined that the registrant has at least one audit committee financial expert. (2) If the registrant provides the disclosure required by paragraph (a)(1)(i) of this Item, it must disclose the name of the audit committee financial expert and whether that person is "independent." In order to be considered "independent" for purposes of this Item, a member of an audit committee may not, other than in his or her capacity as a member of the audit committee, the board of trustees, or any other board committee: (i) Accept directly or indirectly any consulting, advisory, or other compensatory fee from the issuer; or (ii) Be an "interested person" of the investment company as defined in Section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19)). Ms. Marguerite A. Piret, an independent trustee, is such an audit committee financial expert. (3) If the registrant provides the disclosure required by paragraph (a)(1) (ii) of this Item, it must explain why it does not have an audit committee financial expert. Not applicable. ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES. (a) Disclose, under the caption AUDIT FEES, the aggregate fees billed for each of the last two fiscal years for professional services rendered by the principal accountant for the audit of the registrant's annual financial statements or services that are normally provided by the accountant in connection with statutory and regulatory filings or engagements for those fiscal years. Audit Fees Fees for audit services provided to the Funds, including fees associated with the annual filing of its Form N-1A, totaled approximately $99,903 in 2012 and $149,943 in 2011. (b) Disclose, under the caption AUDIT-RELATED FEES, the aggregate fees billed in each of the last two fiscal years for assurance and related services by the principal accountant that are reasonably related to the performance of the audit of the registrant's financial statements and are not reported under paragraph (a) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. Audit-Related Fees There were no fees for audit-related services provided to the Funds during the fiscal years ended July 31, 2012 and 2011. (c) Disclose, under the caption TAX FEES, the aggregate fees billed in each of the last two fiscal years for professional services rendered by the principal accountant for tax compliance, tax advice, and tax planning. Registrants shall describe the nature of the services comprising the fees disclosed under this category. Tax Fees Fees for tax compliance services, primarily for tax returns, totaled approximately $33,160 and $33,160 in 2012 and 2011, respectively. (d) Disclose, under the caption ALL OTHER FEES, the aggregate fees billed in each of the last two fiscal years for products and services provided by the principal accountant, other than the services reported in paragraphs (a) through (c) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. Other Fees There were no fees for other services provided to the Funds during the fiscal years ended July 31, 2012 and 2011. (e) (1) Disclose the audit committee's pre-approval policies and procedures described in paragraph (c)(7) of Rule 2-01 of Regulation S-X. PIONEER FUNDS APPROVAL OF AUDIT, AUDIT-RELATED, TAX AND OTHER SERVICES PROVIDED BY THE INDEPENDENT AUDITOR SECTION I - POLICY PURPOSE AND APPLICABILITY The Pioneer Funds recognize the importance of maintaining the independence of their outside auditors. Maintaining independence is a shared responsibility involving Pioneer Investment Management, Inc ("PIM"), the audit committee and the independent auditors. The Funds recognize that a Fund's independent auditors: 1) possess knowledge of the Funds, 2) are able to incorporate certain services into the scope of the audit, thereby avoiding redundant work, cost and disruption of Fund personnel and processes, and 3) have expertise that has value to the Funds. As a result, there are situations where it is desirable to use the Fund's independent auditors for services in addition to the annual audit and where the potential for conflicts of interests are minimal. Consequently, this policy, which is intended to comply with Rule 210.2-01(C)(7), sets forth guidelines and procedures to be followed by the Funds when retaining the independent audit firm to perform audit, audit-related tax and other services under those circumstances, while also maintaining independence. Approval of a service in accordance with this policy for a Fund shall also constitute approval for any other Fund whose pre-approval is required pursuant to Rule 210.2-01(c)(7)(ii). In addition to the procedures set forth in this policy, any non-audit services that may be provided consistently with Rule 210.2-01 may be approved by the Audit Committee itself and any pre-approval that may be waived in accordance with Rule 210.2-01(c)(7)(i)(C) is hereby waived. Selection of a Fund's independent auditors and their compensation shall be determined by the Audit Committee and shall not be subject to this policy. SECTION II - POLICY ---------------- -------------------------------- ------------------------------------------------- SERVICE SERVICE CATEGORY DESCRIPTION SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES CATEGORY ---------------- -------------------------------- ------------------------------------------------- I. AUDIT Services that are directly o Accounting research assistance SERVICES related to performing the o SEC consultation, registration independent audit of the Funds statements, and reporting o Tax accrual related matters o Implementation of new accounting standards o Compliance letters (e.g. rating agency letters) o Regulatory reviews and assistance regarding financial matters o Semi-annual reviews (if requested) o Comfort letters for closed end offerings ---------------- -------------------------------- ------------------------------------------------- II. Services which are not o AICPA attest and agreed-upon procedures AUDIT-RELATED prohibited under Rule o Technology control assessments SERVICES 210.2-01(C)(4) (the "Rule") o Financial reporting control assessments and are related extensions of o Enterprise security architecture the audit services support the assessment audit, or use the knowledge/expertise gained from the audit procedures as a foundation to complete the project. In most cases, if the Audit-Related Services are not performed by the Audit firm, the scope of the Audit Services would likely increase. The Services are typically well-defined and governed by accounting professional standards (AICPA, SEC, etc.) ---------------- -------------------------------- ------------------------------------------------- ------------------------------------- ------------------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------- ------------------------------------ o "One-time" pre-approval o A summary of all such for the audit period for all services and related fees pre-approved specific service reported at each regularly subcategories. Approval of the scheduled Audit Committee independent auditors as meeting. auditors for a Fund shall constitute pre approval for these services. ------------------------------------- ------------------------------------ o "One-time" pre-approval o A summary of all such for the fund fiscal year within services and related fees a specified dollar limit (including comparison to for all pre-approved specified dollar limits) specific service subcategories reported quarterly. o Specific approval is needed to exceed the pre-approved dollar limit for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for Audit-Related Services not denoted as "pre-approved", or to add a specific service subcategory as "pre-approved" ------------------------------------- ------------------------------------ SECTION III - POLICY DETAIL, CONTINUED ----------------------- --------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES DESCRIPTION ----------------------- --------------------------- ----------------------------------------------- III. TAX SERVICES Services which are not o Tax planning and support prohibited by the Rule, o Tax controversy assistance if an officer of the Fund o Tax compliance, tax returns, excise determines that using the tax returns and support Fund's auditor to provide o Tax opinions these services creates significant synergy in the form of efficiency, minimized disruption, or the ability to maintain a desired level of confidentiality. ----------------------- --------------------------- ----------------------------------------------- ------------------------------------- ------------------------- AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------- ------------------------- ------------------------------------- ------------------------- o "One-time" pre-approval o A summary of for the fund fiscal year all such services and within a specified dollar limit related fees 				 (including comparison 			 to specified dollar 			 limits) reported 			 quarterly. o Specific approval is needed to exceed the pre-approved dollar limits for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for tax services not denoted as pre-approved, or to add a specific service subcategory as "pre-approved" ------------------------------------- ------------------------- SECTION III - POLICY DETAIL, CONTINUED ----------------------- --------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES DESCRIPTION ----------------------- --------------------------- ----------------------------------------------- IV. OTHER SERVICES Services which are not o Business Risk Management support prohibited by the Rule, o Other control and regulatory A. SYNERGISTIC, if an officer of the Fund compliance projects UNIQUE QUALIFICATIONS determines that using the Fund's auditor to provide these services creates significant synergy in the form of efficiency, minimized disruption, the ability to maintain a desired level of confidentiality, or where the Fund's auditors posses unique or superior qualifications to provide these services, resulting in superior value and results for the Fund. ----------------------- --------------------------- ----------------------------------------------- --------------------------------------- ------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------- -------------------------- o "One-time" pre-approval o A summary of for the fund fiscal year within all such services and a specified dollar limit related fees 			 (including comparison 			 to specified dollar 				 limits) reported quarterly. o Specific approval is needed to exceed the pre-approved dollar limits for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for "Synergistic" or "Unique Qualifications" Other Services not denoted as pre-approved to the left, or to add a specific service subcategory as "pre-approved" ------------------------------------- -------------------------- SECTION III - POLICY DETAIL, CONTINUED ----------------------- ------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PROHIBITED SERVICE SUBCATEGORIES DESCRIPTION ----------------------- ------------------------- ----------------------------------------------- PROHIBITED SERVICES Services which result 1. Bookkeeping or other services in the auditors losing related to the accounting records or independence status financial statements of the audit under the Rule. client* 2. Financial information systems design and implementation* 3. Appraisal or valuation services, fairness* opinions, or contribution-in-kind reports 4. Actuarial services (i.e., setting actuarial reserves versus actuarial audit work)* 5. Internal audit outsourcing services* 6. Management functions or human resources 7. Broker or dealer, investment advisor, or investment banking services 8. Legal services and expert services unrelated to the audit 9. Any other service that the Public Company Accounting Oversight Board determines, by regulation, is impermissible ----------------------- ------------------------- ----------------------------------------------- ------------------------------------------- ------------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------------- ------------------------------ o These services are not to be o A summary of all performed with the exception of the(*) services and related services that may be permitted fees reported at each if they would not be subject to audit regularly scheduled procedures at the audit client (as Audit Committee meeting defined in rule 2-01(f)(4)) level will serve as continual the firm providing the service. confirmation that has 				 not provided any restricted services. ------------------------------------------- ------------------------------ -------------------------------------------------------------------------------- GENERAL AUDIT COMMITTEE APPROVAL POLICY: o For all projects, the officers of the Funds and the Fund's auditors will each make an assessment to determine that any proposed projects will not impair independence. o Potential services will be classified into the four non-restricted service categories and the "Approval of Audit, Audit-Related, Tax and Other Services" Policy above will be applied. Any services outside the specific pre-approved service subcategories set forth above must be specifically approved by the Audit Committee. o At least quarterly, the Audit Committee shall review a report summarizing the services by service category, including fees, provided by the Audit firm as set forth in the above policy. -------------------------------------------------------------------------------- (2) Disclose the percentage of services described in each of paragraphs (b) through (d) of this Item that were approved by the audit committee pursuant to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X. Non-Audit Services Beginning with non-audit service contracts entered into on or after May 6, 2003, the effective date of the new SEC pre- approval rules, the Funds' audit committee is required to pre-approve services to affiliates defined by SEC rules to the extent that the services are determined to have a direct impact on the operations or financial reporting of the Funds. For the years ended July 31, 2012 and 2011, there were no services provided to an affiliate that required the Funds' audit committee pre-approval. (f) If greater than 50 percent, disclose the percentage of hours expended on the principal accountant's engagement to audit the registrant's financial statements for the most recent fiscal year that were attributed to work performed by persons other than the principal accountant's full-time, permanent employees. N/A (g) Disclose the aggregate non-audit fees billed by the registrant's accountant for services rendered to the registrant, and rendered to the registrant's investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant for each of the last two fiscal years of the registrant. The aggregate non-audit fees for the Funds and affiliates, as previously defined, totaled approximately $33,160 in 2012 and $33,160 in 2011. (h) Disclose whether the registrant's audit committee of the board of trustees has considered whether the provision of non-audit services that were rendered to the registrant's investment adviser (not including any subadviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant that were not pre-approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. The Fund's audit committee of the Board of Trustees has considered whether the provision of non-audit services that were rendered to the Affiliates (as defined) that were not pre- approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. Item 5. Audit Committee of Listed Registrants (a) If the registrant is a listed issuer as defined in Rule 10A-3 under the Exchange Act (17 CFR 240.10A-3), state whether or not the registrant has a separately-designated standing audit committee established in accordance with Section 3(a)(58)(A) of the Exchange Act (15 U.S.C. 78c(a)(58)(A)). If the registrant has such a committee, however designated, identify each committee member. If the entire board of directors is acting as the registrants audit committee as specified in Section 3(a)(58)(B) of the Exchange Act (15 U.S.C. 78c(a)(58)(B)), so state. N/A (b) If applicable, provide the disclosure required by Rule 10A-3(d) under the Exchange Act (17 CFR 240.10A-3(d)) regarding an exemption from the listing standards for audit committees. N/A Item 6. Schedule of Investments. File Schedule I Investments in securities of unaffiliated issuers as of the close of the reporting period as set forth in 210.12- 12 of Regulation S-X [17 CFR 210.12-12], unless the schedule is included as part of the report to shareholders filed under Item 1 of this Form. Included in Item 1 ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES. A closed-end management investment company that is filing an annual report on this Form N-CSR must, unless it invests exclusively in non-voting securities, describe the policies and procedures that it uses to determine how to vote proxies relating to portfolio securities, including the procedures that the company uses when a vote presents a conflict between the interests of its shareholders, on the one hand, and those of the company's investment adviser; principal underwriter; or any affiliated person (as defined in Section 2(a)(3) of the Investment Company Act of 1940 (15 U.S.C. 80a-2(a)(3)) and the rules thereunder) of the company, its investment adviser, or its principal underwriter, on the other. Include any policies and procedures of the company's investment adviser, or any other third party, that the company uses, or that are used on the company's behalf, to determine how to vote proxies relating to portfolio securities. Not applicable to open-end management investment companies. Item 8. Portfolio Managers of Closed-End Management Investment Companies. (a) If the registrant is a closed-end management investment company that is filing an annual report on this Form N-CSR,provide the following information: (1) State the name, title, and length of service of the person or persons employed by or associated with the registrant or an investment adviser of the registrant who are primarily responsible for the day-to-day management of the registrants portfolio (Portfolio Manager). Also state each Portfolio Managers business experience during the past 5 years. Not applicable to open-end management investment companies. Item 9. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers. (a) If the registrant is a closed-end management investment company, in the following tabular format, provide the information specified in paragraph (b) of this Item with respect to any purchase made by or on behalf of the registrant or any affiliated purchaser, as defined in Rule 10b-18(a)(3) under the Exchange Act (17 CFR 240.10b-18(a)(3)), of shares or other units of any class of the registrants equity securities that is registered by the registrant pursuant to Section 12 of the Exchange Act (15 U.S.C. 781). Instruction to paragraph (a). Disclose all purchases covered by this Item, including purchases that do not satisfy the conditions of the safe harbor of Rule 10b-18 under the Exchange Act (17 CFR 240.10b-18), made in the period covered by the report. Provide disclosures covering repurchases made on a monthly basis. For example, if the reporting period began on January 16 and ended on July 15, the chart would show repurchases for the months from January 16 through February 15, February 16 through March 15, March 16 through April 15, April 16 through May 15, May 16 through June 15, and June 16 through July 15. Not applicable to open-end management investment companies. Item 10. Submission of Matters to a Vote of Security Holders. Describe any material changes to the procedures by which shareholders may recommend nominees to the registrants board of directors, where those changes were implemented after the registrant last provided disclosure in response to the requirements of Item 7(d)(2)(ii)(G) of Schedule 14A (17 CFR 240.14a-101), or this Item. There have been no material changes to the procedures by which the shareholders may recommend nominees to the registrants board of directors since the registrant last provided disclosure in response to the requirements of Item 7(d)(2)(ii)(G) of Schedule 14(A) in its definitive proxy statement, or this Item. ITEM 11. CONTROLS AND PROCEDURES. (a) Disclose the conclusions of the registrant's principal executive officer or officers and principal financial officer or officers, or persons performing similar functions, about the effectiveness of the registrant's disclosure controls and procedures (as defined in Rule 30a-2(c) under the Act (17 CFR 270.30a-2(c))) based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of the report that includes the disclosure required by this paragraph. The registrant's principal executive officer and principal financial officer have concluded that the registrant's disclosure controls and procedures are effective based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of this report. (b) Disclose whether or not there were significant changes in the registrant's internal controls or in other factors that could significantly affect these controls subsequent to the date of their evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses. There were no significant changes in the registrant's internal control over financial reporting that occurred during the second fiscal quarter of the period covered by this report that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting. The registrant's principal executive officer and principal financial officer, however, voluntarily are reporting the following information: In August of 2006 the registrant's investment adviser enhanced its internal procedures for reporting performance information required to be included in prospectuses. Those enhancements involved additional internal controls over the appropriateness of performance data generated for this purpose. Such enhancements were made following an internal review which identified prospectuses relating to certain classes of shares of a limited number of registrants where, inadvertently, performance information not reflecting the deduction of applicable sales charges was included. Those prospectuses were revised, and the revised prospectuses were distributed to shareholders. ITEM 12. EXHIBITS. File the exhibits listed below as part of this Form. Letter or number the exhibits in the sequence indicated. (a) Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit. (b) A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2 under the Act (17 CFR 270.30a-2). Filed herewith. SIGNATURES [See General Instruction F] Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. (Registrant) Pioneer Ibbotson Asset Allocation Series By (Signature and Title)* /s/ John F. Cogan, Jr. John F. Cogan, Jr, President Date September 28, 2012 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By (Signature and Title)* /s/ John F. Cogan, Jr. John F. Cogan, Jr., President Date September 28, 2012 By (Signature and Title)* /s/ Mark Bradley Mark Bradley, Treasurer & Chief Accounting & Financial Officer Date September 28, 2012 * Print the name and title of each signing officer under his or her signature.