OMB APPROVAL OMB Number: 3235-0570 Expires: September 30, 2007 Estimated average burden hours per response.....19.4 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) Dorothy E. Bourassa, 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, 2006 through July 31, 2007 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 7/31/07 [Logo] PIONEER Investments(R) Table of Contents - -------------------------------------------------------------------------------- Letter to Shareowners 2 Market Overview and Outlook 4 Comparing Ongoing Fund Expenses 8 Portfolio Reviews 16 Prices and Distributions 18 Conservative Allocation Fund - Portfolio Summary and Performance Update 20 Moderate Allocation Fund - Portfolio Summary and Performance Update 25 Growth Allocation Fund - Portfolio Summary and Performance Update 30 Aggressive Allocation Fund - Portfolio Summary and Performance Update 35 Schedule of Investments 40 Financial Statements 44 Notes to Financial Statements 66 Report of Independent Registered Public Accounting Firm 79 Trustees, Officers and Service Providers 80 President's Dear Shareowner, - -------------------------------------------------------------------------------- Staying diversified and keeping your portfolio invested in the markets are two general investment principles that have served investors well over time. Those were particularly useful guides during the past year, as U.S. and global stock and bond markets grew strongly during the period. In the 12 months ending July 31, 2007, equity investors were generally rewarded as, despite a late-July decline, the Standard & Poor's 500 Index generated a return of 16% over that period, the Dow Jones Industrial Average returned 21%, and the NASDAQ Composite returned 22%. International developed and emerging markets equities performed even better than U.S. equities, with the MSCI EAFE Developed Market Index returning 24% and the MSCI Emerging Markets Index returning 51% in the 12-month period. The U.S. bond market, as measured by the Lehman Aggregate Bond Index, returned 6% in the 12 months ending July 31, 2007, with returns comprising both coupon income and price gains linked to a modest decline in interest rates over the 12 months. The high-yield market, as measured by the Merrill Lynch High Yield Bond Master II Index, returned 7%, reflecting its higher coupon yields and continuing investor confidence in the strength of the U.S. economy. U.S. economic growth has slowed recently, but continuing growth at a moderate rate appears more likely than a recession. Slowing growth was due in large part to a decline in the rate of new home construction and in part to the lagging effects of rising energy and commodity prices and rising short-term interest rates. It also stemmed from the natural maturation of the cyclical expansion as U.S. factories approach full utilization and the labor market approaches full employment. This slowdown, therefore, was not entirely unwelcome, as it reduces the threat of higher inflation. The Federal Reserve Board (the Fed) continues to highlight its commitment to keeping inflationary pressures contained. This is in keeping with "best practices" among the world's central banks: low and stable inflation is believed to be the best backdrop for stable economic growth and low average unemployment over the long term. Keeping inflation low is also an important support for stock and bond valuations, and so the Fed's policy is "investor friendly." In Europe, solid GDP growth driven by a positive operating environment for European companies, especially those that are benefiting from strong 2 Letter export markets for their goods and services, is pushing unemployment lower and supporting growing consumption. European inflationary pressures appear to be largely under control, with the European Central bank remaining strongly vigilant. Japanese economic growth continues, and the country has become a more attractive market as deflationary problems recede. Economic growth in emerging market countries remains faster than in the developed world as they continue to "catch up," led by China, which continues its rise as a world economic power. Looking forward, the economic outlook and equity valuations continue to appear generally positive, although the current environment is plagued by fears that sub-prime mortgage problems will result in a systemic liquidity/credit crunch. While falling risk tolerances may depress asset prices in the short term, valuations appear reasonable if credit market problems do not spread to the broader economy. Sudden swings in the markets are always to be expected. Just as staying diversified and invested are important investment principles, it is also important to pay attention to asset allocation. As always, we encourage shareholders to work closely with their financial advisor to find the mix of stocks, bonds and money market assets that is aligned to your particular risk tolerance and investment objective. Respectfully, /s/Daniel K. Kingsbury Daniel K. Kingsbury President and CEO Pioneer Investment Management USA, Inc. Any information in this shareholder report regarding market or economic trends or the factors influencing the Portfolio's historical or future performance are statements of the opinion of a portfolio's management 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. 3 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- MARKET OVERVIEW AND OUTLOOK 7/31/07 - -------------------------------------------------------------------------------- In the following interview, portfolio manager Peng Chen, Chief Investment Officer for Ibbotson Associates, discusses the market environment and investment strategies that applied to the portfolios in the Pioneer Ibbotson Allocation Series for the annual period ended July 31, 2007. Q: Could you characterize the economic and market backdrop during the 12 months ended July 31, 2007? A: As the period began, economic growth showed some signs of moderating, led in particular by a softening in the housing sector. At its August meeting, after 17 consecutive quarter point increases in the Fed funds rate, the Federal Reserve paused in its tightening campaign, leaving the benchmark short-term rate at its current 5.25%. Longer-term interest rates fell sharply early in the period, leading to a flattening and then an inversion of the yield curve (where shorter-term issues yield more than long-term issues). As the period progressed, the economy displayed solid growth despite continued uncertainty over the future impact of the housing sector, and in particular the subprime mortgage market. While inflation generally remained moderate, there were indicators including continued strong employment and high oil prices that raised concerns over its future direction. A pick up in inflationary concerns caused the yield curve to re-steepen over the second half of the year, as yields on longer Treasuries began to reflect the risk of their returns being eroded. As the period drew to a close, heightened concerns over the subprime mortgage sector led to a sharp increase in financial market volatility. For the full period, bonds generally provided positive returns. Both domestic and international equity markets provided strong positive returns for the fiscal year. Q: What were the tactical considerations that you applied to the four portfolios in allocating assets? A: For each portfolio, assets have been invested in keeping with their broad asset allocation and specific mutual fund targets. Within this strategic framework, during the year, we maintained our tactical positioning in three areas across all the portfolios. Within the U.S. stock portion of the Funds, we continued to emphasize large-capitalization stocks relative to small-cap stocks in relation to the Funds' target allocations. We have done this for a number 4 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- of reasons. While small-cap stocks have historically outperformed large-caps over significant periods, there is a cyclical aspect to this performance leadership, and the recent cycle of outperformance has been unusually long. In addition, small-cap stocks are currently trading at valuations approximately double those for large caps. Finally, if the economy slows as a result of higher interest rates, large-cap stocks may be more resilient. For the annual period, this strategy was a positive for performance, as large cap stocks began to display meaningful outperformance versus small caps. We believe that the market may be on the brink of a cycle of large cap performance leadership, and expect to maintain this positioning going forward. With respect to the other equity categories, exposure remained in line with the target allocations throughout the period. We have also maintained neutral target weightings in the non-U.S. equity market alternatives, both developed and emerging. A second strategic emphasis is within the bond portion of the portfolios, where we have continued to emphasize the long-term bond vehicle versus the target allocations, with the difference allocated to the shorter-term fixed-income alternative. This strategy was essentially a neutral factor in performance for the full period, although it began to work well for the portfolios as longer-term issues experienced the most impact as interest rates rose. While it is difficult to predict the direction for long-term interest rates over the short term, over time we do expect long-term bond yields to continue to trend higher, with corresponding downward pressure on prices of these issues. In addition, short-term rates are reasonably attractive given the Fed's past increases of the benchmark rate. In view of these factors, we believe the risk/reward profile continues to be more favorable among shorter-term issues. Elsewhere within fixed-income, we have maintained target positions in the high-yield bond offering, as well as in the non-U.S. fixed-income option. Finally, we continue to underweight REITs (Real Estate Investment Trusts) in relation to the Funds' targets. REITs are traditionally most attractive to investors seeking income return, and these issues benefited from the period of low interest rates experienced in the recent past. As rates have risen, REIT yields have reached historically low levels relative to Treasury bonds. At the same time, REITs on the whole continue to be priced at well above the general stock market, as gauged by traditional valuation measures, such as price-to-earnings 5 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- MARKET OVERVIEW AND OUTLOOK 7/31/07 (continued) - -------------------------------------------------------------------------------- ratio. In addition to appearing less attractively valued when compared to both bonds and the rest of the stock market, REITs may be vulnerable to higher market interest rate levels, which we expect to lead to continued cooling in the real estate sector. This strategy added to performance over the year, as REITs fell sharply. We continue to underweight REITs in view of our risk/reward assessment. Q: What factors are you watching most closely as you determine allocations for the portfolios going forward? A: Overall, despite the recent rise in market volatility, our outlook continues to be for a relatively stable economic backdrop. Core inflation continues to run at the upper end of the Fed's comfort zone, and the job market is producing solid employment numbers. We anticipate ongoing weakness in the U.S. dollar in view of the U.S. trade, budget and savings deficits. This also implies the likelihood of higher interest rate levels and relatively low returns for bonds. We are continuing to monitor high-yield bonds in particular for possible trimming. The outlook for corporate profit growth remains solid, and we believe the U.S. stock market is fairly priced. In view of our outlook for the U.S. dollar, however, we continue to evaluate overseas markets as a possible focus area (relative to target allocations) as valuations permit. We anticipate further softening in the real estate sector and will be closely watching for any impact on the broader economy. Going forward, we will continue to monitor economic indicators and interest rates to evaluate whether we need to adjust the views underlying our strategic allocations. Each portfolio'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 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. 6 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Investments in these types of securities generally are subject to greater volatility than either higher-grade securities or more-established companies, respectively. Before making an investment in any portfolio, you should consider all the risks associated with it. Please see the Portfolio Reviews beginning on page 16 for information on specific weightings and performance for each of the four portfolios in the Pioneer Ibbotson Asset Allocation Series. Any information in this shareholder report regarding market or economic trends or the factors influencing each portfolios' historical or future performance are statements of the opinion of the portfolio's management 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. 7 Pioneer Ibbotson Conservative Allocation Fund - -------------------------------------------------------------------------------- COMPARING ONGOING FUND EXPENSES 7/31/07 - -------------------------------------------------------------------------------- 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, 2007 through July 31, 2007. Share Class A B C Y - --------------------------------------------------------------------------- Beginning Account Value On 2/1/07 $1,000.00 $1,000.00 $1,000.00 $1,000.00 Ending Account Value (after expenses) On 7/31/07 $1,024.53 $1,020.29 $1,020.22 $1,026.39 Expenses Paid During Period* $ 6.93 $ 11.42 $ 11.42 $ 7.44 * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. The combined totals were 1.38%, 2.28%, 2.28% and 1.48%, 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 181/365 (to reflect the partial year period) to calculate the "Expenses Paid During Period" in the table above. 8 Pioneer Ibbotson Conservative Allocation Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 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, 2007 through July 31, 2007. Share Class A B C Y - --------------------------------------------------------------------------- Beginning Account Value On 2/1/07 $1,000.00 $1,000.00 $1,000.00 $1,000.00 Ending Account Value (after expenses) On 7/31/07 $1,017.95 $1,013.49 $1,013.49 $1,017.46 Expenses Paid During Period* $ 6.90 $ 11.38 $ 11.38 $ 7.40 * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. The combined totals were 1.38%, 2.28%, 2.28% and 1.48%, 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 181/365 (to reflect the partial year period) to calculate the "Expenses Paid During Period" in the table above. 9 Pioneer Ibbotson Moderate Allocation Fund - -------------------------------------------------------------------------------- COMPARING ONGOING FUND EXPENSES 7/31/07 - -------------------------------------------------------------------------------- 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, 2007 through July 31, 2007. Share Class A B C Y - --------------------------------------------------------------------------- Beginning Account Value On 2/1/07 $1,000.00 $1,000.00 $1,000.00 $1,000.00 Ending Account Value (after expenses) On 7/31/07 $1,025.41 $1,021.30 $1,022.40 $1,027.00 Expenses Paid During Period* $ 6.88 $ 11.08 $ 10.53 $ 5.08 * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. The combined totals were 1.37%, 2.21%, 2.10% and 1.01%, 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 181/365 (to reflect the partial year period) to calculate the "Expenses Paid During Period" in the table above. 10 Pioneer Ibbotson Moderate Allocation Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 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, 2007 through July 31, 2007. Share Class A B C Y - --------------------------------------------------------------------------- Beginning Account Value On 2/1/07 $1,000.00 $1,000.00 $1,000.00 $1,000.00 Ending Account Value (after expenses) On 7/31/07 $1,018.00 $1,013.84 $1,014.38 $1,019.79 Expenses Paid During Period* $ 6.85 $ 11.03 $ 10.49 $ 5.06 * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. The combined totals were 1.37%, 2.21%, 2.10% and 1.01%, 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 181/365 (to reflect the partial year period) to calculate the "Expenses Paid During Period" in the table above. 11 Pioneer Ibbotson Growth Allocation Fund - -------------------------------------------------------------------------------- COMPARING ONGOING FUND EXPENSES 7/31/07 - -------------------------------------------------------------------------------- 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, 2007 through July 31, 2007. Share Class A B C Y - --------------------------------------------------------------------------- Beginning Account Value On 2/1/07 $1,000.00 $1,000.00 $1,000.00 $1,000.00 Ending Account Value (after expenses) On 7/31/07 $1,029.89 $1,025.35 $1,025.42 $1,029.58 Expenses Paid During Period* $ 7.45 $ 11.75 $ 11.05 $ 5.69 * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. The combined totals were 1.48%, 2.34%, 2.20% and 1.13%, 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 181/365 (to reflect the partial year period) to calculate the "Expenses Paid During Period" in the table above. 12 Pioneer Ibbotson Growth Allocation Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 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, 2007 through July 31, 2007. Share Class A B C Y - --------------------------------------------------------------------------- Beginning Account Value On 2/1/07 $1,000.00 $1,000.00 $1,000.00 $1,000.00 Ending Account Value (after expenses) On 7/31/07 $1,017.46 $1,013.19 $1,013.88 $1,019.19 Expenses Paid During Period* $ 7.40 $ 11.68 $ 10.99 $ 5.66 * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. The combined totals were 1.48%, 2.34%, 2.20% and 1.13%, 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 181/365 (to reflect the partial year period) to calculate the "Expenses Paid During Period" in the table above. 13 Pioneer Ibbotson Aggressive Allocation Fund - -------------------------------------------------------------------------------- COMPARING ONGOING FUND EXPENSES 7/31/07 - -------------------------------------------------------------------------------- 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, 2007 through July 31, 2007. Share Class A B C Y - --------------------------------------------------------------------------- Beginning Account Value On 2/1/07 $1,000.00 $1,000.00 $1,000.00 $1,000.00 Ending Account Value (after expenses) On 7/31/07 $1,030.54 $1,026.49 $1,026.91 $1,033.36 Expenses Paid During Period* $ 8.21 $ 12.36 $ 11.76 $ 6.10 * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. The combined totals were 1.63%, 2.46%, 2.34% and 1.21%, 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 181/365 (to reflect the partial year period) to calculate the "Expenses Paid During Period" in the table above. 14 Pioneer Ibbotson Aggressive Allocation Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 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, 2007 through July 31, 2007. Share Class A B C Y - --------------------------------------------------------------------------- Beginning Account Value On 2/1/07 $1,000.00 $1,000.00 $1,000.00 $1,000.00 Ending Account Value (after expenses) On 7/31/07 $1,016.71 $1,012.60 $1,013.19 $1,018.79 Expenses Paid During Period* $ 8.15 $ 12.28 $ 11.68 $ 6.06 * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. The combined totals were 1.63%, 2.46%, 2.34% and 1.21%, 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 181/365 (to reflect the partial year period) to calculate the "Expenses Paid During Period" in the table above. 15 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- PORTFOLIO REVIEWS 7/31/07 - -------------------------------------------------------------------------------- Conservative Allocation The Fund's total return for the annual period ended July 31, 2007 was 8.99% for Class A shares, at net asset value. The Fund targeted an asset allocation of 30% equities and 70% fixed-income during the period. Within the equity portion of the Fund, Pioneer Research Fund was the largest holding at 7.55% of assets on July 31, 2007. Pioneer International Equity Fund was the next largest equity holding at 6.53% of assets. Large-capitalization holdings were weighted slightly above target at the end of the period, reflecting management's view that these stocks were more attractive than their smaller-cap counterparts. Within the fixed-income portion of the Fund, the largest holding at the end of the period was in a shorter duration bond fund, Pioneer Short Term Income Fund, at 28.38%, followed by Pioneer Bond Fund at 18.75% of assets. (Duration is a measure of a bond price sensitivity to changes in interest rates.) Moderate Allocation The Fund's total return for the annual period ended July 31, 2007 was 12.58% for Class A shares, at net asset value. The Fund targeted an asset allocation of 60% equities, 40% fixed-income during the period. Within the equity portion of the Fund, Pioneer International Equity Fund was the largest holding at 10.24% of assets on July 31, 2007. Pioneer Research Fund was the next largest equity holding at 10.18% of assets. Large-capitalization holdings were weighted slightly above target at the end of the period, reflecting management's view that these stocks were more attractive than their smaller-cap counterparts. Within the fixed-income portion of the Fund, the largest holding at the end of the period was in a shorter duration bond fund, Pioneer Short Term Income Fund, at 18.73%, followed by Pioneer Bond Fund at 9.32% of assets. Growth Allocation The Fund's total return for the annual period ended July 31, 2007 was 14.73% for Class A shares, at net asset value. The Fund targeted an asset allocation of 75% equities, 25% fixed-income during the period. Within the equity portion of the portfolio, Pioneer International Equity Fund was the largest holding at 12.22% of assets on July 31, 2007. The largest domestic equity allocation was to Pioneer Research Fund, 11.70%, followed by Pioneer Oak Ridge 16 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Large Cap Growth Fund, 9.16% of assets. Large-capitalization holdings were weighted slightly above target at the end of the period, reflecting management's view that these stocks were more attractive than their smaller-cap counterparts. Within the fixed-income portion of the Fund, the largest holding at the end of the period was in a shorter-term bond fund, Pioneer Short Term Income Fund, at 11.41% of assets, while an intermediate-duration bond fund, Pioneer Bond Fund represented 7.99% of assets. Aggressive Allocation The Fund's total return for the annual period ended July 31, 2007 was 16.41% for Class A shares, at net asset value. The Fund targeted an asset allocation of 90% equities, 10% fixed-income during the period. Within the equity portion of the portfolio, Pioneer International Equity Fund was the largest holding at 15.17% of assets on July 31, 2007. On the domestic side, Pioneer Research Fund, 13.03% of assets and Pioneer Oak Ridge Large Cap Growth Fund at 10.28% of assets were the largest holdings. Large-capitalization holdings were weighted slightly above target at the end of the period, reflecting management's view that these stocks were more attractive than their smaller-cap counterparts. The fixed-income portion of the Fund was invested in an intermediate-term bond fund, Pioneer Bond Fund, at 6.08% of assets, while Pioneer Short Term Income Fund represented 2.47% of assets. Call 1-800-225-6292 or visit www.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 shareholder report regarding market or economic trends or the factors influencing each portfolios' historical or future performance are statements of the opinion of the portfolios' management 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. 17 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- PRICES AND DISTRIBUTIONS - -------------------------------------------------------------------------------- Net Asset Value Per Share - -------------------------------------------------------------------------------- Conservative Allocation Fund Class 7/31/07 7/31/06 ----- ------- ------- A $11.28 $10.56 B $11.10 $10.44 C $11.09 $10.44 Y $11.30 $10.57 Moderate Allocation Fund Class 7/31/07 7/31/06 ----- ------- ------- A $12.50 $11.39 B $11.97 $10.92 C $11.88 $10.85 Y $12.55 $11.43 Growth Allocation Fund Class 7/31/07 7/31/06 ----- ------- ------- A $13.47 $12.04 B $12.17 $10.93 C $12.90 $11.58 Y $13.55 $12.13 Aggressive Allocation Fund Class 7/31/07 7/31/06 ----- ------- ------- A $14.20 $12.39 B $13.55 $11.84 C $13.73 $12.00 Y $14.26 $12.41 18 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- PRICES AND DISTRIBUTIONS (continued) - -------------------------------------------------------------------------------- Distributions Per Share - -------------------------------------------------------------------------------- Conservative Allocation Fund 8/1/06 - 7/31/07 ---------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains ----- ------ ------------- ------------- A $0.1923 $ - $0.0191 B $0.1601 $ - $0.0191 C $0.1613 $ - $0.0191 Y $0.1858 $ - $0.0191 Moderate Allocation Fund 8/1/06 - 7/31/07 ---------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains ----- ------ ------------- ------------- A $0.2777 $0.0038 $0.0297 B $0.1865 $0.0038 $0.0297 C $0.2111 $0.0038 $0.0297 Y $0.3159 $0.0038 $0.0297 Growth Allocation Fund 8/1/06 - 7/31/07 ---------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains ----- ------ ------------- ------------- A $0.2283 $ - $0.1000 B $0.1442 $ - $0.1000 C $0.1623 $ - $0.1000 Y $0.2678 $ - $0.1000 Aggressive Allocation Fund 8/1/06 - 7/31/07 ---------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains ----- ------ ------------- ------------- A $0.1561 $ - $0.0567 B $0.0629 $ - $0.0567 C $0.0826 $ - $0.0567 Y $0.2025 $ - $0.0567 19 Pioneer Ibbotson Conservative Allocation Fund - -------------------------------------------------------------------------------- PORTFOLIO SUMMARY 7/31/07 - -------------------------------------------------------------------------------- Target Asset Allocations - -------------------------------------------------------------------------------- [The following data was represented as a pie chart in the printed material] Fixed Income 70% Equity 30% Short Term Bond 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 Value 2.00 --------------------------------------------- Mid/Small Cap Growth 2.00 --------------------------------------------- Real Estate Investment Trusts (REITs) 0.00 --------------------------------------------- Emerging Market 0.00 --------------------------------------------- Actual Portfolio Holdings (based on total portfolio) - -------------------------------------------------------------------------------- U.S. Stocks International Stocks - ----------------------------------------- ------------------------------------ Pioneer Research 7.55% Pioneer International Equity 6.53% - ----------------------------------------- ------------------------------------ Pioneer Fund 5.42 Pioneer Europe Select Equity 2.15 - ----------------------------------------- ------------------------------------ Pioneer Oak Ridge Large Cap Growth 3.36 Bonds - ----------------------------------------- ------------------------------------ Pioneer Cullen Value 3.28 Pioneer Short Term Income 28.38 - ----------------------------------------- ------------------------------------ Pioneer Independence 2.19 Pioneer Bond 18.75 - ----------------------------------------- ------------------------------------ Pioneer Mid Cap Growth 1.08 Pioneer High Yield 7.81 - ----------------------------------------- ------------------------------------ Pioneer Value 1.07 Pioneer Strategic Income 5.70 - ----------------------------------------- ------------------------------------ Pioneer Small Cap Value 1.05 Pioneer Global High Yield 3.33 - ----------------------------------------- ------------------------------------ Pioneer Government Income 2.35 ------------------------------------ This list excludes temporary cash 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. 20 Pioneer Ibbotson Conservative Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS A SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) Public Net Asset Offering Period Value (NAV) Price (POP) Life-of-Class (5/12/05) 6.83% 4.01% 1 Year 8.89 2.76 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 2.83% 1.49% - --------------------------------------------- [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Conservative & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 5/05 9,425 10,000 10,000 7/05 9,599 10,386 9,963 7/06 9,910 10,945 10,108 7/07 10,800 12,710 10,672 Call 1-800-225-6292 or visit www.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 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 12/1/09 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. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 21 Pioneer Ibbotson Conservative Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS B SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) If If Period Held Redeemed Life-of-Class (5/12/05) 5.93% 4.66% 1 Year 8.09 4.09 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 3.79% 2.39% - --------------------------------------------- [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Conservative & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 5/05 10,000 10,000 10,000 7/05 10,178 10,386 9,963 7/06 10,409 10,945 10,108 7/07 10,950 12,710 10,672 Call 1-800-225-6292 or visit www.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). Effective December 1, 2004, the period during which a CDSC is applied to withdrawals was shortened to 5 years. The maximum CDSC for Class B shares continues to be 4%. For more complete information, please see the prospectus for details. Note: Shares purchased prior to December 1, 2004 remain subject to the CDSC in effect at the time you purchased those shares. For performance information for shares purchased prior to December 1, 2004, please visit www.pioneerinvestments.com/bshares. 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 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 12/1/08 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 fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 22 Pioneer Ibbotson Conservative Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS C SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) If If Period Held Redeemed Life-of-Class (5/12/05) 5.89% 5.89% 1 Year 8.00 8.00 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 3.51% 2.39% - --------------------------------------------- [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Conservative & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 5/05 10,000 10,000 10,000 7/05 10,168 10,386 9,963 7/06 10,419 10,945 10,108 7/07 11,253 12,710 10,672 Call 1-800-225-6292 or visit www.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 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 12/1/08 for Class C 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. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 23 Pioneer Ibbotson Conservative Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS Y SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) If If Period Held Redeemed Life-of-Class (5/12/05)* 6.88% 6.88% 1 Year 8.91 8.91 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 2.90% 2.90% - --------------------------------------------- * Inception date of Class A Shares. [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Conservative & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 5/05 10,000 10,000 10,000 7/05 10,188 10,386 9,963 7/06 10,538 10,945 10,108 7/07 11,477 12,710 10,672 Call 1-800-225-6292 or visit www.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 for periods prior to the inception of the Fund's Class Y shares on 10/5/05 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 shown for Class Y shares prior to their inception would have been higher. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. Performance results 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. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 24 Pioneer Ibbotson Moderate Allocation Fund - -------------------------------------------------------------------------------- PORTFOLIO SUMMARY 7/31/07 - -------------------------------------------------------------------------------- Target Asset Allocations - -------------------------------------------------------------------------------- [The following data was represented as a pie chart in the printed material] Equity 60% Fixed Income 40% Short Term Bond 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 Value 6.00 --------------------------------------------- Cash & Cash Equivalents 6.00 --------------------------------------------- Mid/Small Cap Growth 6.00 --------------------------------------------- Real Estate Investment Trusts (REITs) 3.00 --------------------------------------------- Emerging Market 2.00 --------------------------------------------- Actual Portfolio Holdings (based on total portfolio) - -------------------------------------------------------------------------------- U.S. Stocks International Stocks - ------------------------------------------ ------------------------------------ Pioneer Research 10.18% Pioneer International Equity 10.24% - ------------------------------------------ ------------------------------------ Pioneer Fund 9.14 Pioneer Europe Select Equity 2.95 - ------------------------------------------ ------------------------------------ Pioneer Oak Ridge Large Cap Growth 7.54 Pioneer Emerging Markets 2.27 - ------------------------------------------ ------------------------------------ Pioneer Cullen Value 4.07 Bonds - ------------------------------------------ ------------------------------------ Pioneer Value 3.04 Pioneer Short Term Income 18.73 - ------------------------------------------ ------------------------------------ Pioneer Independence 2.96 Pioneer Bond 9.32 - ------------------------------------------ ------------------------------------ Pioneer Real Estate 2.64 Pioneer High Yield 4.22 - ------------------------------------------ ------------------------------------ Pioneer Mid Cap Growth 2.06 Pioneer Global High Yield 1.97 - ------------------------------------------ ------------------------------------ Pioneer Growth Opportunities 1.99 Pioneer Government Income 1.52 - ------------------------------------------ ------------------------------------ Pioneer Mid Cap Value 1.96 Pioneer Strategic Income 1.26 - ------------------------------------------ ------------------------------------ Pioneer Small Cap Value 1.94 - ------------------------------------------ This list excludes temporary cash 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. 25 Pioneer Ibbotson Moderate Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS A SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) Public Net Asset Offering Period Value (NAV) Price (POP) Life-of-Class (8/9/04) 10.66% 8.48% 1 Year 12.58 6.15 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 1.42% 1.42% - --------------------------------------------- [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Moderate & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 8/04 9,425 10,000 10,000 7/05 10,570 11,358 10,282 7/06 11,097 11,969 10,433 7/07 12,493 13,900 11,015 Call 1-800-225-6292 or visit www.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 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 12/1/09 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. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 26 Pioneer Ibbotson Moderate Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS B SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) If If Period Held Redeemed Life-of-Class (8/9/04) 8.62% 7.76% 1 Year 11.70 7.70 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 2.30% 2.30% - --------------------------------------------- [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Moderate & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 8/04 10,000 10,000 10,000 7/05 10,978 11,358 10,282 7/06 11,417 11,969 10,433 7/07 12,453 13,900 11,015 Call 1-800-225-6292 or visit www.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). Effective December 1, 2004, the period during which a CDSC is applied to withdrawals was shortened to 5 years. The maximum CDSC for Class B shares continues to be 4%. For more complete information, please see the prospectus for details. Note: Shares purchased prior to December 1, 2004 remain subject to the CDSC in effect at the time you purchased those shares. For performance information for shares purchased prior to December 1, 2004, please visit www.pioneerinvestments.com/bshares. 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 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 12/1/08 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 fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 27 Pioneer Ibbotson Moderate Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS C SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) If If Period Held Redeemed Life-of-Class (8/9/04) 8.43% 8.43% 1 Year 11.83 11.83 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 2.21% 2.21% - --------------------------------------------- [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Moderate & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 8/04 10,000 10,000 10,000 7/05 11,122 11,358 10,282 7/06 11,573 11,969 10,433 7/07 12,941 13,900 11,015 Call 1-800-225-6292 or visit www.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 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 12/1/08 for Class C 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. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 28 Pioneer Ibbotson Moderate Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS Y SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) - --------------------------------------------- If If Period Held Redeemed Life-of-Class (8/9/04)* 10.96% 10.96% 1 Year 12.98 12.98 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 1.07% 1.07% - --------------------------------------------- * Inception date of Class A Shares. [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Moderate & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 8/04 10,000 10,000 10,000 7/05 11,213 11,358 10,282 7/06 11,826 11,969 10,433 7/07 13,361 13,900 11,015 Call 1-800-225-6292 or visit www.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 for periods prior to the inception of the Fund's Class Y shares on 9/23/05 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 shown for Class Y shares prior to their inception would have been higher. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. Performance results 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. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 29 Pioneer Ibbotson Growth Allocation Fund - -------------------------------------------------------------------------------- PORTFOLIO SUMMARY 7/31/07 - -------------------------------------------------------------------------------- Target Asset Allocations - -------------------------------------------------------------------------------- [The following data was represented as 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 Bond 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 Market 4.00 --------------------------------------------- Real Estate Investment Trusts (REITs) 4.00 --------------------------------------------- Cash & Cash Equivalents 0.00 --------------------------------------------- Actual Portfolio Holdings (based on total portfolio) - -------------------------------------------------------------------------------- U.S. Stocks International Stocks - ------------------------------------------ ------------------------------------ Pioneer Research 11.70% Pioneer International Equity 12.22% - ------------------------------------------ ------------------------------------ Pioneer Oak Ridge Large Cap Growth 9.16 Pioneer Emerging Markets 4.51 - ------------------------------------------ ------------------------------------ Pioneer Fund 9.03 Pioneer Europe Select Equity 3.71 - ------------------------------------------ ------------------------------------ Pioneer Cullen Value 4.09 Bonds - ------------------------------------------ ------------------------------------ Pioneer Mid Cap Value 3.68 Pioneer Short Term Income 11.41 - ------------------------------------------ ------------------------------------ Pioneer Real Estate 3.42 Pioneer Bond 7.99 - ------------------------------------------ ------------------------------------ Pioneer Mid Cap Growth 3.22 Pioneer High Yield 2.13 - ------------------------------------------ ------------------------------------ Pioneer Value 3.14 Pioneer Global High Yield 0.94 - ------------------------------------------ ------------------------------------ Pioneer Independence 2.90 Pioneer Strategic Income 0.67 - ------------------------------------------ ------------------------------------ Pioneer Growth Opportunities 2.86 Pioneer Government Income 0.54 - ------------------------------------------ ------------------------------------ Pioneer Small Cap Value 2.68 - ------------------------------------------ This list excludes temporary cash 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. 30 Pioneer Ibbotson Growth Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS A SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) Public Net Asset Offering Period Value (NAV) Price (POP) Life-of-Class (8/9/04) 13.00% 10.77% 1 Year 14.73 8.17 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 1.57% 1.57% - --------------------------------------------- [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Growth & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 8/04 9,425 10,000 10,000 7/05 10,892 11,358 10,282 7/06 11,577 11,969 10,433 7/07 13,281 13,900 11,015 Call 1-800-225-6292 or visit www.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 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 12/1/09 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. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 31 Pioneer Ibbotson Growth Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS B SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) - --------------------------------------------- If If Period Held Redeemed Life-of-Class (8/9/04) 8.95% 8.09% 1 Year 13.67 9.67 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 2.45% 2.40% - --------------------------------------------- [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Growth & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 8/04 10,000 10,000 10,000 7/05 11,046 11,358 10,282 7/06 11,657 11,969 10,433 7/07 12,950 13,900 11,015 Call 1-800-225-6292 or visit www.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). Effective December 1, 2004, the period during which a CDSC is applied to withdrawals was shortened to 5 years. The maximum CDSC for Class B shares continues to be 4%. For more complete information, please see the prospectus for details. Note: Shares purchased prior to December 1, 2004 remain subject to the CDSC in effect at the time you purchased those shares. For performance information for shares purchased prior to December 1, 2004, please visit www.pioneerinvestments.com/bshares. 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 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 12/1/08 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 fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 32 Pioneer Ibbotson Growth Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS C SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) - --------------------------------------------- If If Period Held Redeemed Life-of-Class (8/9/04) 11.00% 11.00% 1 Year 13.75 13.75 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 2.29% 2.29% - --------------------------------------------- [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Growth & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 8/04 10,000 10,000 10,000 7/05 11,310 11,358 10,282 7/06 11,933 11,969 10,433 7/07 13,575 13,900 11,015 Call 1-800-225-6292 or visit www.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 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 12/1/08 for Class C 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. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 33 Pioneer Ibbotson Growth Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS Y SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) - --------------------------------------------- If If Period Held Redeemed Life-of-Class (8/9/04)* 13.37% 13.37% 1 Year 14.87 14.87 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 1.15% 1.15% - --------------------------------------------- * Inception date of Class A Shares. [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Growth & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 8/04 10,000 10,000 10,000 7/05 11,553 11,358 10,282 7/06 12,387 11,969 10,433 7/07 14,229 13,900 11,015 Call 1-800-225-6292 or visit www.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 for periods prior to the inception of the Fund's Class Y shares on 9/26/05 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 shown for Class Y shares prior to their inception would have been higher. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. Performance results 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. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 34 Pioneer Ibbotson Aggressive Allocation Fund - -------------------------------------------------------------------------------- PORTFOLIO SUMMARY 7/31/07 - -------------------------------------------------------------------------------- Target Asset Allocations - -------------------------------------------------------------------------------- [The following data was represented as 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 --------------------------------------------- Emerging Market 5.00 --------------------------------------------- Real Estate Investment Trusts (REITs) 5.00 --------------------------------------------- Short Term Bond 3.00 --------------------------------------------- High-Yield Corporate Bonds 0.00 --------------------------------------------- Cash & Cash Equivalents 0.00 --------------------------------------------- Actual Portfolio Holdings (based on total portfolio) - -------------------------------------------------------------------------------- U.S. Stocks International Stocks - ------------------------------------------ ------------------------------------ Pioneer Research 13.03% Pioneer International Equity 15.17% - ------------------------------------------ ------------------------------------ Pioneer Oak Ridge Large Cap Growth 10.28 Pioneer Europe Select Equity 5.66 - ------------------------------------------ ------------------------------------ Pioneer Fund 10.08 Pioneer Emerging Markets 5.64 - ------------------------------------------ ------------------------------------ Pioneer Cullen Value 5.01 Bonds - ------------------------------------------ ------------------------------------ Pioneer Mid Cap Value 4.60 Pioneer Bond 6.08 - ------------------------------------------ ------------------------------------ Pioneer Real Estate 4.40 Pioneer Short Term Income 2.47 - ------------------------------------------ ------------------------------------ Pioneer Value 3.92 - ------------------------------------------ Pioneer Small Cap Value 3.63 - ------------------------------------------ Pioneer Growth Opportunities 3.57 - ------------------------------------------ Pioneer Mid Cap Growth 3.33 - ------------------------------------------ Pioneer Independence 3.13 - ------------------------------------------ This list excludes temporary cash 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. 35 Pioneer Ibbotson Aggressive Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS A SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) - --------------------------------------------- Public Net Asset Offering Period Value (NAV) Price (POP) Life-of-Class (8/9/04) 15.07% 12.80% 1 Year 16.41 9.68 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 1.72% 1.72% - --------------------------------------------- [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Aggressive & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 8/04 9,425 10,000 10,000 7/05 11,173 11,358 10,282 7/06 11,989 11,969 10,433 7/07 13,956 13,900 11,015 Call 1-800-225-6292 or visit www.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 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 12/1/09 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. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 36 Pioneer Ibbotson Aggressive Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS B SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) - --------------------------------------------- If If Period Held Redeemed Life-of-Class (8/9/04) 12.97% 12.18% 1 Year 15.49 11.49 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 2.59% 2.54% - --------------------------------------------- [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Aggressive & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 8/04 10,000 10,000 10,000 7/05 11,690 11,358 10,282 7/06 12,434 11,969 10,433 7/07 14,061 13,900 11,015 Call 1-800-225-6292 or visit www.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). Effective December 1, 2004, the period during which a CDSC is applied to withdrawals was shortened to 5 years. The maximum CDSC for Class B shares continues to be 4%. For more complete information, please see the prospectus for details. Note: Shares purchased prior to December 1, 2004 remain subject to the CDSC in effect at the time you purchased those shares. For performance information for shares purchased prior to December 1, 2004, please visit www.pioneerinvestments.com/bshares. 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 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 12/1/08 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 fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 37 Pioneer Ibbotson Aggressive Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS C SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) - --------------------------------------------- If If Period Held Redeemed Life-of-Class (8/9/04) 13.50% 13.50% 1 Year 15.63 15.63 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 2.46% 2.46% - --------------------------------------------- [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Aggressive & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 8/04 10,000 10,000 10,000 7/05 11,563 11,358 10,282 7/06 12,299 11,969 10,433 7/07 14,221 13,900 11,015 Call 1-800-225-6292 or visit www.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 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 12/1/08 for Class C 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. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 38 Pioneer Ibbotson Aggressive Allocation Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 7/31/07 CLASS Y SHARES - -------------------------------------------------------------------------------- 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 Stock Index and Lehman Brothers Aggregate Bond Index. - --------------------------------------------- Average Annual Total Returns (As of July 31, 2007) - --------------------------------------------- If If Period Held Redeemed Life-of-Class (8/9/04)* 15.40% 15.40% 1 Year 17.10 17.10 - --------------------------------------------- Expense Ratio (Per prospectus dated 12/1/06) Gross Net 1.27% 1.27% - --------------------------------------------- * Inception date of Class A Shares. [The following data was represented as a line graph in the printed material] Value of $10,000 Investment Pioneer Ibbotson Standard Lehman Aggressive & Poor's Brothers Allocation 500 Stock Aggregate Fund Index Bond Index 8/04 10,000 10,000 10,000 7/05 11,860 11,358 10,282 7/06 12,759 11,969 10,433 7/07 14,941 13,900 11,015 Call 1-800-225-6292 or visit www.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 for periods prior to the inception of the Fund's Class Y shares on 9/23/05 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 shown for Class Y shares prior to their inception would have been higher. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. Performance results 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. The Standard & Poor's 500 Stock Index (the S&P 500) is a commonly used measure of the broad U.S. stock market. The Lehman Brothers 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. You cannot invest directly in an Index. 39 Pioneer Ibbotson Conservative Allocation Fund - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 7/31/07 - -------------------------------------------------------------------------------- Shares Value MUTUAL FUNDS - 88.7% PIONEER FUNDS - 88.7% 706,995 Pioneer Bond Fund Class Y $ 6,299,325 53,239 Pioneer Cullen Value Fund Class Y 1,102,585 16,101 Pioneer Europe Select Equity Fund Class Y 720,999 36,324 Pioneer Fund Class Y 1,820,175 93,187 Pioneer Global High Yield Fund Class Y 1,119,179 85,467 Pioneer Government Income Fund Class Y 790,568 235,352 Pioneer High Yield Fund Class Y 2,624,172 51,679 Pioneer Independence Fund Class Y 734,877 77,791 Pioneer International Equity Fund Class Y 2,193,715 21,710 Pioneer Mid-Cap Growth Fund Class Y 364,077 77,775 Pioneer Oak Ridge Large Cap Growth Fund Class Y 1,128,510 211,351 Pioneer Research Fund Class Y 2,538,324 976,175 Pioneer Short Term Income Fund Class Y 9,537,234 11,014 Pioneer Small Cap Value Fund Class Y 352,678 185,502 Pioneer Strategic Income Fund Class Y 1,914,379 20,605 Pioneer Value Fund Class Y 360,995 ----------- TOTAL INVESTMENTS IN SECURITIES - 88.7% (Cost $32,672,694) (a) $33,601,792 OTHER ASSETS AND LIABILITIES - 11.3% 4,276,224 ----------- TOTAL NET ASSETS - 100.0% $37,878,016 =========== (a) At July 31, 2007, the net unrealized gain on investments based on cost for federal tax purposes of $32,722,533 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $1,047,882 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (168,623) ---------- Net unrealized gain $ 879,259 ========== Purchases and sales of securities (excluding temporary cash investments) for the year ended July 31, 2007 aggregated $21,727,283 and $4,013,102, respectively. 40 The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Moderate Allocation Fund - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 7/31/07 - -------------------------------------------------------------------------------- Shares Value MUTUAL FUNDS - 98.6% PIONEER FUNDS - 98.6% 3,065,010 Pioneer Bond Fund Class Y $ 27,309,242 575,345 Pioneer Cullen Value Fund Class Y 11,915,404 163,862 Pioneer Emerging Markets Fund Class Y 6,662,649 193,160 Pioneer Europe Select Equity Fund Class Y 8,649,697 534,365 Pioneer Fund Class Y 26,777,044 481,351 Pioneer Global High Yield Fund Class Y 5,781,028 481,912 Pioneer Government Income Fund Class Y 4,457,690 196,884 Pioneer Growth Opportunities Fund Class Y 5,831,717 1,107,970 Pioneer High Yield Fund Class Y 12,353,864 609,033 Pioneer Independence Fund Class Y 8,660,454 1,064,389 Pioneer International Equity Fund Class Y 30,015,757 360,497 Pioneer Mid-Cap Growth Fund Class Y 6,045,527 223,490 Pioneer Mid-Cap Value Fund Class Y 5,741,471 1,523,021 Pioneer Oak Ridge Large Cap Growth Fund Class Y 22,099,038 277,426 Pioneer Real Estate Shares Fund Class Y 7,731,858 2,485,323 Pioneer Research Fund Class Y 29,848,729 5,619,320 Pioneer Short Term Income Fund Class Y 54,900,755 177,673 Pioneer Small Cap Value Fund Class Y 5,689,104 358,363 Pioneer Strategic Income Fund Class Y 3,698,309 507,768 Pioneer Value Fund Class Y 8,896,090 ------------ TOTAL INVESTMENTS IN SECURITIES - 98.6% (Cost $263,624,784) (a) $293,065,427 OTHER ASSETS AND LIABILITIES - 1.4% 4,272,046 ------------ TOTAL NET ASSETS - 100.0% $297,337,473 ============ (a) At July 31, 2007, the net unrealized gain on investments based on cost for federal tax purposes of $265,294,879 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $29,619,833 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (1,849,285) ----------- Net unrealized gain $27,770,548 =========== Purchases and sales of securities (excluding temporary cash investments) for the year ended July 31, 2007 aggregated $75,211,098 and $53,163,861, respectively. The accompanying notes are an integral part of these financial statements. 41 Pioneer Ibbotson Growth Allocation Fund - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 7/31/07 - -------------------------------------------------------------------------------- Shares Value MUTUAL FUNDS - 101.7% PIONEER FUNDS - 101.7% 2,640,397 Pioneer Bond Fund Class Y $ 23,525,940 580,742 Pioneer Cullen Value Fund Class Y 12,027,172 326,345 Pioneer Emerging Markets Fund Class Y 13,269,190 243,909 Pioneer Europe Select Equity Fund Class Y 10,922,244 530,317 Pioneer Fund Class Y 26,574,182 229,958 Pioneer Global High Yield Fund Class Y 2,761,800 171,736 Pioneer Government Income Fund Class Y 1,588,554 284,349 Pioneer Growth Opportunities Fund Class Y 8,422,431 563,405 Pioneer High Yield Fund Class Y 6,281,967 600,316 Pioneer Independence Fund Class Y 8,536,499 1,275,695 Pioneer International Equity Fund Class Y 35,974,597 565,603 Pioneer Mid-Cap Growth Fund Class Y 9,485,170 421,105 Pioneer Mid-Cap Value Fund Class Y 10,818,182 1,857,532 Pioneer Oak Ridge Large Cap Growth Fund Class Y 26,952,789 361,331 Pioneer Real Estate Shares Fund Class Y 10,070,297 2,868,147 Pioneer Research Fund Class Y 34,446,445 3,436,904 Pioneer Short Term Income Fund Class Y 33,578,548 246,283 Pioneer Small Cap Value Fund Class Y 7,885,980 189,543 Pioneer Strategic Income Fund Class Y 1,956,084 527,550 Pioneer Value Fund Class Y 9,242,670 ------------ TOTAL INVESTMENTS IN SECURITIES - 101.7% (Cost $262,767,673) (a) $294,320,741 OTHER ASSETS AND LIABILITIES - (1.7%) (4,955,467) ------------ TOTAL NET ASSETS - 100.0% $289,365,274 ============ (a) At July 31, 2007, the net unrealized gain on investments based on cost for federal tax purposes of $263,443,143 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $32,059,607 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (1,182,009) ----------- Net unrealized gain $30,877,598 =========== Purchases and sales of securities (excluding temporary cash investments) for the year ended July 31, 2007 aggregated $88,370,621 and $29,376,260, respectively. 42 The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Aggressive Allocation Fund - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 7/31/07 - -------------------------------------------------------------------------------- Shares Value MUTUAL FUNDS - 100.4% PIONEER FUNDS - 100.4% 1,223,598 Pioneer Bond Fund Class Y $ 10,902,256 433,753 Pioneer Cullen Value Fund Class Y 8,983,025 248,847 Pioneer Emerging Markets Fund Class Y 10,118,111 226,569 Pioneer Europe Select Equity Fund Class Y 10,145,742 360,689 Pioneer Fund Class Y 18,074,102 216,310 Pioneer Growth Opportunities Fund Class Y 6,407,108 395,029 Pioneer Independence Fund Class Y 5,617,313 964,581 Pioneer International Equity Fund Class Y 27,201,182 356,603 Pioneer Mid-Cap Growth Fund Class Y 5,980,224 320,725 Pioneer Mid-Cap Value Fund Class Y 8,239,419 1,270,176 Pioneer Oak Ridge Large Cap Growth Fund Class Y 18,430,257 282,985 Pioneer Real Estate Shares Fund Class Y 7,886,780 1,945,472 Pioneer Research Fund Class Y 23,365,116 452,525 Pioneer Short Term Income Fund Class Y 4,421,172 203,070 Pioneer Small Cap Value Fund Class Y 6,502,292 400,901 Pioneer Value Fund Class Y 7,023,786 ------------ TOTAL INVESTMENTS IN SECURITIES - 100.4% (Cost $154,692,772) (a) $179,297,885 OTHER ASSETS AND LIABILITIES - (0.4%) (740,628) ------------ TOTAL NET ASSETS - 100.0% $178,557,257 ============ (a) At July 31, 2007, the net unrealized gain on investments based on cost for federal tax purposes of $155,643,384 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $24,074,420 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (419,919) ----------- Net unrealized gain $23,654,501 =========== Purchases and sales of securities (excluding temporary cash investments) for the year ended July 31, 2007 aggregated $56,690,622 and $29,218,755, respectively. The accompanying notes are an integral part of these financial statements. 43 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- STATEMENT OF ASSETS AND LIABILITIES 7/31/07 - -------------------------------------------------------------------------------- Conservative Moderate Growth Aggressive Allocation Allocation Allocation Allocation Fund Fund Fund Fund ASSETS: Investments in securities of affiliated issuers, at value (at cost $32,672,694, $263,624,784, $262,767,673 and $154,692,772, respectively) $33,601,792 $293,065,427 $294,320,741 $179,297,885 Cash 4,091,053 4,660,624 - - Receivables for: Investment Funds sold 4,811 683,991 101,450 187,287 Capital stock sold 255,825 308,149 595,197 215,839 Due from Pioneer Investment Management, Inc. 11,890 - 12,031 8,978 Other assets 30,909 33,263 52,554 39,588 ----------- ------------ ------------ ------------ Total assets $37,996,280 $298,751,454 $295,081,973 $179,749,577 ----------- ------------ ------------ ------------ LIABILITIES: Payables for: Due to Custodian $ - $ - $ 663,941 $ 533,122 Funds purchased 15,018 112,717 190,664 366,653 Capital stock redeemed 20,827 1,015,355 4,546,228 85,911 Due to affiliates 27,337 216,626 245,365 142,490 Accrued expenses and other liabilities 55,082 69,283 70,501 64,144 ----------- ------------ ------------ ------------ Total liabilities $ 118,264 $ 1,413,981 $ 5,716,699 $ 1,192,320 ----------- ------------ ------------ ------------ NET ASSETS: Paid-in capital $36,138,916 $258,946,001 $249,615,111 $149,533,567 Accumulated undistributed net investment income 483,044 2,072,065 571,326 321,362 Accumulated net realized gain on investments 326,958 6,878,764 7,625,769 4,097,215 Net unrealized gain on investments 929,098 29,440,643 31,553,068 24,605,113 ----------- ------------ ------------ ------------ Total net assets $37,878,016 $297,337,473 $289,365,274 $178,557,257 =========== ============ ============ ============ NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Net Assets of Class A shares $23,323,650 $165,090,227 $157,452,654 $114,053,748 Net Assets of Class B shares $ 4,729,198 $ 60,795,576 $ 76,094,766 $ 37,748,526 Net Assets of Class C shares $ 9,814,492 $ 47,405,435 $ 52,861,496 $ 23,583,570 Net Assets of Class Y shares $ 10,676 $ 24,046,235 $ 2,956,358 $ 3,171,413 =========== ============ ============ ============ Class A Shares outstanding 2,067,022 13,205,584 11,693,265 8,032,841 Class B Shares outstanding 425,883 5,080,381 6,253,890 2,786,111 Class C Shares outstanding 884,953 3,991,734 4,096,879 1,717,199 Class Y Shares outstanding 945 1,915,400 218,173 222,415 =========== ============ ============ ============ Net Asset Value - Class A shares $ 11.28 $ 12.50 $ 13.47 $ 14.20 Net Asset Value - Class B shares $ 11.10 $ 11.97 $ 12.17 $ 13.55 Net Asset Value - Class C shares $ 11.09 $ 11.88 $ 12.90 $ 13.73 Net Asset Value - Class Y shares $ 11.30 $ 12.55 $ 13.55 $ 14.26 =========== ============ ============ ============ MAXIMUM OFFERING PRICE: Class A (100 [divided by] 94.25 x net asset value per share) $ 11.97 $ 13.26 $ 14.29 $ 15.07 =========== ============ ============ ============ 44 The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- STATEMENT OF OPERATIONS - -------------------------------------------------------------------------------- Conservative Moderate Growth Aggressive Allocation Allocation Allocation Allocation Fund Fund Fund Fund INVESTMENT INCOME: Dividend income from securities of affiliated issuers $ 937,834 $ 6,568,664 $ 4,761,914 $ 2,011,799 Interest 157,667 400,075 17,758 67,434 ---------- ----------- ----------- ----------- Total investment income $1,095,501 $ 6,968,739 $ 4,779,672 $ 2,079,233 ---------- ----------- ----------- ----------- EXPENSES: Management fees $ 39,012 $ 377,431 $ 342,936 $ 214,111 Transfer agent fees and expenses Class A 23,594 213,775 271,713 249,730 Class B 9,874 137,937 228,417 127,228 Class C 9,134 49,717 67,893 37,420 Class Y 25 4,764 2,247 2,834 Distribution fees Class A 45,261 406,920 358,831 260,722 Class B 37,929 602,056 718,393 356,430 Class C 77,304 402,475 444,793 199,411 Administrative reimbursements 14,737 76,975 71,094 53,490 Custodian fees 19,692 154,714 167,125 127,935 Registration fees 57,400 80,759 78,885 68,036 Professional fees 41,433 59,373 53,223 51,076 Printing fees 7,500 13,941 19,353 14,410 Fees and expenses of nonaffiliated trustees 4,522 2,057 7,162 6,446 Insurance expense 357 6,440 5,016 3,200 Miscellaneous 2,059 3,082 2,672 2,090 ---------- ----------- ----------- ----------- Total expenses $ 389,833 $ 2,592,416 $ 2,839,753 $ 1,774,569 Less management fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (50,668) - (12,023) (10,500) Less fees paid indirectly (1,376) (15,964) (25,260) (17,662) ---------- ----------- ----------- ----------- Net expenses $ 337,789 $ 2,576,452 $ 2,802,470 $ 1,746,407 ---------- ----------- ----------- ----------- Net investment income $ 757,712 $ 4,392,287 $ 1,977,202 $ 332,826 ---------- ----------- ----------- ----------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS: Net realized gain (loss) on investments $ (3,804) $ 1,469,923 $ 309,918 $ 1,148,529 Realized gain distributions from investment company shares 449,214 8,871,123 9,796,499 7,145,723 Change in net unrealized gain (loss) on investments 943,898 18,224,119 20,626,049 14,484,776 ---------- ----------- ----------- ----------- Net gain on investments $1,389,308 $28,565,165 $30,732,466 $22,779,028 ---------- ----------- ----------- ----------- Net increase in net assets resulting from operations $2,147,020 $32,957,452 $32,709,668 $23,111,854 ========== =========== =========== =========== The accompanying notes are an integral part of these financial statements. 45 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- STATEMENTS OF CHANGES IN NET ASSETS - -------------------------------------------------------------------------------- For the Years Ended 7/31/07 and 7/31/06 Conservative Allocation Fund Moderate Allocation Fund ------------------------------ ------------------------------ Year Year Year Year Ended Ended Ended Ended 7/31/07 7/31/06 7/31/07 7/31/06 FROM OPERATIONS: Net investment income $ 757,712 $ 176,494 $ 4,392,287 $ 2,661,929 Net realized gain on investments 445,410 41,436 10,341,046 9,459,032 Change in net unrealized gain (loss) on investments 943,898 (36,031) 18,224,119 (1,460,980) ------------- ------------- ------------- ------------- Net increase in net assets resulting from operations $ 2,147,020 $ 181,899 $ 32,957,452 $ 10,659,981 ------------- ------------- ------------- ------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income Class A ($0.19, $0.06, $0.28 and $0.06, respectively) $ (352,800) $ (22,489) $ (3,595,361) $ (695,194) Class B ($0.16, $0.06, $0.19 and $0.03, respectively) (51,337) (9,129) (965,092) (142,133) Class C ($0.16, $0.06, $0.21 and $0.01, respectively) (109,847) (10,659) (710,891) (31,961) Class Y ($0.19, $0.06, $0.32 and $0.08, respectively) (176) (6) (686,855) (334,603) Net realized gain on investments Class A ($0.02, $0.01, $0.03 and $0.24, respectively) (35,042) (3,055) (433,722) (2,636,349) Class B ($0.02, $0.01, $0.03 and $0.24, respectively) (6,124) (1,240) (173,354) (1,086,431) Class C ($0.02, $0.01, $0.03 and $0.24, respectively) (13,007) (1,448) (112,813) (524,670) Class Y ($0.02, $0.01, $0.03 and $0.24, respectively) (18) (1) (72,838) (1,057,414) ------------- ------------- ------------- ------------- Total distributions to shareowners $ (568,351) $ (48,027) $ (6,750,926) $ (6,508,755) ------------- ------------- ------------- ------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 27,279,565 $ 17,709,197 $ 82,429,746 $ 113,368,592 Reinvestment of distributions 470,891 35,314 6,044,029 5,879,935 Cost of shares repurchased (8,329,288) (2,777,184) (81,098,373) (73,049,619) Shares issued in reorganization - - - 155,508,777 ------------- ------------- ------------- ------------- Net increase in net assets resulting from Fund share transactions $ 19,421,168 $ 14,967,327 $ 7,375,402 $ 201,707,685 ------------- ------------- ------------- ------------- Net increase in net assets $ 20,999,837 $ 15,101,199 $ 33,581,928 $ 205,858,911 NET ASSETS: Beginning of period 16,878,179 1,776,980 263,755,545 57,896,634 ------------- ------------- ------------- ------------- End of period $ 37,878,016 $ 16,878,179 $ 297,337,473 $ 263,755,545 ============= ============= ============= ============= Accumulated undistributed net investment income, end of period $ 483,044 $ 149,065 $ 2,072,065 $ 2,083,330 ============= ============= ============= ============= 46 The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Growth Allocation Fund Aggressive Allocation Fund ------------------------------ ------------------------------ Year Year Year Year Ended Ended Ended Ended 7/31/07 7/31/06 7/31/07 7/31/06 FROM OPERATIONS: Net investment income (loss) $ 1,977,202 $ 659,773 $ 332,826 $ (134,073) Net realized gain on investments 10,106,417 4,635,900 8,294,252 4,831,003 Change in net unrealized gain on investments 20,626,049 3,158,797 14,484,776 1,495,849 ------------- ------------- ------------- ------------- Net increase in net assets resulting from operations $ 32,709,668 $ 8,454,470 $ 23,111,854 $ 6,192,779 ------------- ------------- ------------- ------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income Class A ($0.23, $0.05, $0.16 and $0.02, respectively) $ (2,440,569) $ (345,018) $ (1,175,654) $ (73,792) Class B ($0.14, $0.02, $0.06 and $0.00, respectively) (862,255) (82,794) (170,484) - Class C ($0.16, $0.00, $0.08 and $0.00, respectively) (542,866) - (119,362) - Class Y ($0.27, $0.06, $0.20 and $0.03, respectively) (55,783) (39,851) (79,270) (25,479) Net realized gain on investments Class A ($0.10, $0.13, $0.06 and $0.27, respectively) (1,069,019) (902,786) (427,031) (1,223,951) Class B ($0.10, $0.13, $0.06 and $0.27, respectively) (597,958) (577,319) (153,679) (567,882) Class C ($0.10, $0.13, $0.06 and $0.27, respectively) (334,483) (261,229) (81,935) (231,664) Class Y ($0.10, $0.13, $0.06 and $0.27, respectively) (20,830) (80,074) (22,196) (243,638) ------------- ------------- ------------- ------------- Total distributions to shareowners $ (5,923,763) $ (2,289,071) $ (2,229,611) $ (2,366,406) ------------- ------------- ------------- ------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 101,083,097 $ 118,122,801 $ 59,146,717 $ 75,239,813 Reinvestment of distributions 5,541,108 2,099,209 2,097,785 2,169,818 Cost of shares repurchased (57,961,702) (36,958,781) (38,857,236) (30,943,807) Shares issued in reorganization - 68,183,852 - 51,316,549 ------------- ------------- ------------- ------------- Net increase in net assets resulting from Fund share transactions $ 48,662,503 $ 151,447,081 $ 22,387,266 $ 97,782,373 ------------- ------------- ------------- ------------- Net increase in net assets $ 75,448,408 $ 157,612,480 $ 43,269,509 $ 101,608,746 NET ASSETS: Beginning of period 213,916,866 56,304,386 135,287,748 33,679,002 ------------- ------------- ------------- ------------- End of period $ 289,365,274 $ 213,916,866 $ 178,557,257 $ 135,287,748 ============= ============= ============= ============= Accumulated undistributed net investment income, end of period $ 571,326 $ 672,433 $ 321,362 $ 75,741 ============= ============= ============= ============= The accompanying notes are an integral part of these financial statements. 47 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- STATEMENTS OF CHANGES IN NET ASSETS (continued) - -------------------------------------------------------------------------------- For the Years Ended 7/31/07 and 7/31/06 Conservative Allocation Fund ---------------------------------------------------------- '07 Shares '07 Amount '06 Shares '06 Amount CLASS A Shares sold 1,675,353 $18,500,177 898,359 $9,400,261 Reinvestment of distributions 33,733 368,359 2,031 21,079 Less shares repurchased (479,247) (5,344,105) (148,457) (1,557,446) --------- ----------- -------- ---------- Net increase 1,229,839 $13,524,431 751,933 $7,863,894 ========= =========== ======== ========== CLASS B Shares sold 236,187 $ 2,583,516 286,529 $2,974,458 Reinvestment of distributions 4,693 50,688 835 8,620 Less shares repurchased (85,992) (940,137) (37,816) (393,152) --------- ----------- -------- ---------- Net increase 154,888 $ 1,694,067 249,548 $2,589,926 ========= =========== ======== ========== CLASS C Shares sold 568,924 $ 6,195,872 510,972 $5,324,478 Reinvestment of distributions 4,805 51,844 544 5,615 Less shares repurchased (187,162) (2,045,046) (79,377) (826,586) --------- ----------- -------- ---------- Net increase 386,567 $ 4,202,670 432,139 $4,503,507 ========= =========== ======== ========== CLASS Y Shares sold - $ - 945 $ 10,000 Reinvestment of distributions - - - - Less shares repurchased - - - - --------- ----------- -------- ---------- Net increase - $ - 945 $ 10,000 ========= =========== ======== ========== Moderate Allocation Fund ----------------------------------------------------------------- '07 Shares '07 Amount '06 Shares '06 Amount CLASS A Shares sold 4,074,111 $49,725,116 6,405,638 $ 72,857,111 Reinvestment of distributions 314,311 3,781,164 269,424 3,009,471 Less shares repurchased (4,222,518) (51,804,650) (2,680,612) (30,546,449) Shares issued in reorganization - - 6,095,571 68,142,545 ---------- ----------- ---------- ------------ Net increase 165,904 $ 1,701,630 10,090,021 $113,462,678 ========== =========== ========== ============ CLASS B Shares sold 932,886 $10,869,626 1,605,785 $ 17,587,651 Reinvestment of distributions 89,682 1,037,617 105,082 1,131,732 Less shares repurchased (983,186) (11,535,587) (664,314) (7,283,351) Shares issued in reorganization - - 3,086,496 33,269,915 ---------- ----------- ---------- ------------ Net increase 39,382 $ 371,656 4,133,049 $ 44,705,947 ========== =========== ========== ============ CLASS C Shares sold 1,736,902 $20,273,756 1,923,525 $ 20,933,219 Reinvestment of distributions 50,255 576,929 33,895 362,338 Less shares repurchased (782,532) (9,089,223) (395,765) (4,288,391) ---------- ----------- ---------- ------------ Net increase 1,004,625 $11,761,462 1,561,655 $ 17,007,166 ========== =========== ========== ============ CLASS Y Shares sold 127,023 $ 1,561,248 174,727 $ 1,990,611 Reinvestment of distributions 53,758 648,319 123,333 1,376,394 Less shares repurchased (696,159) (8,668,913) (2,706,254) (30,931,428) Shares issued in reorganization - - 4,838,972 54,096,317 ---------- ----------- ---------- ------------ Net increase (decrease) (515,378) $(6,459,346) 2,430,778 $ 26,531,894 ========== =========== ========== ============ 48 The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- For the Years Ended 7/31/07 and 7/31/06 Growth Allocation Fund --------------------------------------------------------------- '07 Shares '07 Amount '06 Shares '06 Amount CLASS A Shares sold 4,581,469 $59,854,154 5,798,720 $69,197,676 Reinvestment of distributions 260,778 3,361,429 99,749 1,172,050 Less shares repurchased (2,797,188) (36,805,149) (1,538,171) (18,428,645) Shares issued in reorganization - - 2,572,757 29,688,353 ---------- ----------- ---------- ----------- Net increase 2,045,059 $26,410,434 6,933,055 $81,629,434 ========== =========== ========== =========== CLASS B Shares sold 1,407,692 $16,572,434 2,420,842 $26,412,340 Reinvestment of distributions 119,895 1,403,970 59,006 631,954 Less shares repurchased (891,286) (10,570,178) (750,314) (8,164,423) Shares issued in reorganization - - 2,915,273 30,697,135 ---------- ----------- ---------- ----------- Net increase 636,301 $ 7,406,226 4,644,807 $49,577,006 ========== =========== ========== =========== CLASS C Shares sold 1,876,853 $23,627,869 1,909,199 $21,909,801 Reinvestment of distributions 56,602 702,425 17,009 192,886 Less shares repurchased (714,675) (9,034,349) (387,946) (4,507,506) ---------- ----------- ---------- ----------- Net increase 1,218,780 $15,295,945 1,538,262 $17,595,181 ========== =========== ========== =========== CLASS Y Shares sold 76,408 $ 1,028,640 51,290 $ 602,984 Reinvestment of distributions 5,650 73,284 8,708 102,319 Less shares repurchased (116,745) (1,552,026) (482,918) (5,858,207) Shares issued in reorganization - - 675,780 7,798,364 ---------- ----------- ---------- ----------- Net increase (decrease) (34,687) $ (450,102) 252,860 $ 2,645,460 ========== =========== ========== =========== Aggressive Allocation Fund --------------------------------------------------------------- '07 Shares '07 Amount '06 Shares '06 Amount CLASS A Shares sold 2,897,818 $39,680,448 4,278,800 $52,739,788 Reinvestment of distributions 113,085 1,533,432 100,587 1,213,082 Less shares repurchased (1,820,781) (25,206,002) (1,049,894) (12,946,732) Shares issued in reorganization - - 1,763,269 20,930,973 ---------- ----------- ---------- ----------- Net increase 1,190,122 $16,007,878 5,092,762 $61,937,111 ========== =========== ========== =========== CLASS B Shares sold 614,633 $ 8,000,633 958,460 $11,426,790 Reinvestment of distributions 23,644 307,367 44,921 520,186 Less shares repurchased (417,719) (5,489,710) (311,556) (3,687,072) Shares issued in reorganization - - 1,360,585 15,538,420 ---------- ----------- ---------- ----------- Net increase 220,558 $ 2,818,290 2,052,410 $23,798,324 ========== =========== ========== =========== CLASS C Shares sold 724,822 $ 9,693,390 838,226 $10,065,538 Reinvestment of distributions 12,263 161,506 14,339 168,202 Less shares repurchased (313,094) (4,183,498) (178,514) (2,148,569) ---------- ----------- ---------- ----------- Net increase 423,991 $ 5,671,398 674,051 $ 8,085,171 ========== =========== ========== =========== CLASS Y Shares sold 131,135 $ 1,772,246 84,627 $ 1,007,697 Reinvestment of distributions 7,031 95,480 22,288 268,348 Less shares repurchased (287,047) (3,978,026) (986,399) (12,161,434) Shares issued in reorganization - - 1,250,780 14,847,156 ---------- ----------- ---------- ----------- Net increase (decrease) (148,881) $(2,110,300) 371,296 $ 3,961,767 ========== =========== ========== =========== The accompanying notes are an integral part of these financial statements. 49 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Conservative Allocation Fund Year Year 5/12/05 (a) Ended Ended To 7/31/07 7/31/06 7/31/05 CLASS A Net asset value, beginning of period $ 10.56 $10.29 $ 10.00 ------- ------ ------- Increase from investment operations: Net investment income (b) $ 0.32 $ 0.25 $ 0.05 Net realized and unrealized gain on investments 0.61 0.09 0.24 ------- ------ ------- Net increase from investment operations $ 0.93 $ 0.34 $ 0.29 ------- ------ ------- Distributions to shareowners: Net investment income $ (0.19) $(0.06) $ - Net realized gain (0.02) (0.01) - ------- ------ ------- Net increase in net asset value $ 0.72 $ 0.27 $ 0.29 ------- ------ ------- Net asset value, end of period $ 11.28 $10.56 $ 10.29 ======= ====== ======= Total return* 8.89% 3.33% 2.90%*** Ratio of net expenses to average net assets+ ++ 0.78% 0.78% 0.78%** Ratio of net investment income to average net assets+ ++ 2.90% 2.38% 2.26%** Portfolio turnover rate 15% 15% 9% Net assets, end of period (in thousands) $23,324 $8,837 $ 877 Ratios with no waiver of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 0.98% 2.12% 40.41%** Net investment income (loss) 2.70% 1.04% (37.37)%** Ratios with waiver of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 0.78% 0.78% 0.78%** Net investment income 2.90% 2.38% 2.26%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. 50 The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Conservative Allocation Fund Year Year 5/12/05 (a) Ended Ended To 7/31/07 7/31/06 7/31/05 CLASS B Net asset value, beginning of period $10.44 $10.28 $ 10.00 ------ ------ ------- Increase from investment operations: Net investment income (b) $ 0.21 $ 0.15 $ 0.03 Net realized and unrealized gain on investments 0.63 0.08 0.25 ------ ------ ------- Net increase from investment operations $ 0.84 $ 0.23 $ 0.28 ------ ------ ------- Distributions to shareowners: Net investment income $(0.16) $(0.06) $ - Net realized gain (0.02) (0.01) - ------ ------ ------- Net increase in net asset value $ 0.66 $ 0.16 $ 0.28 ------ ------ ------- Net asset value, end of period $11.10 $10.44 $ 10.28 ====== ====== ======= Total return* 8.09% 2.26% 2.80%*** Ratio of net expenses to average net assets+ ++ 1.69% 1.68% 1.68%** Ratio of net investment income to average net assets+ ++ 1.91% 1.49% 1.23%** Portfolio turnover rate 15% 15% 9% Net assets, end of period (in thousands) $4,729 $2,830 $ 221 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.91% 3.08% 38.96%** Net investment income (loss) 1.69% 0.09% (36.05)%** Ratios with waiver of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.68% 1.68% 1.68%** Net investment income 1.92% 1.49% 1.23%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. The accompanying notes are an integral part of these financial statements. 51 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Conservative Allocation Fund Year Year 5/12/05 (a) Ended Ended To 7/31/07 7/31/06 7/31/05 CLASS C Net asset value, beginning of period $10.44 $10.26 $ 10.00 ------ ------ ------- Increase from investment operations: Net investment income (b) $ 0.21 $ 0.15 $ 0.03 Net realized and unrealized gain on investments 0.62 0.10 0.23 ------ ------ ------- Net increase from investment operations $ 0.83 $ 0.25 $ 0.26 ------ ------ ------- Distributions to shareowners: Net investment income $(0.16) $(0.06) $ - Net realized gain (0.02) (0.01) - ------ ------ ------- Net increase in net asset value $ 0.65 $ 0.18 $ 0.26 ------ ------ ------- Net asset value, end of period $11.09 $10.44 $ 10.26 ====== ====== ======= Total return* 8.00% 2.46% 2.60%*** Ratio of net expenses to average net assets+ ++ 1.68% 1.68% 1.68%** Ratio of net investment income to average net assets+ ++ 1.92% 1.48% 1.17%** Portfolio turnover rate 15% 15% 9% Net assets, end of period (in thousands) $9,814 $5,201 $ 679 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.76% 2.80% 45.38%** Net investment income (loss) 1.84% 0.36% (42.53)%** Ratios with waiver of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.68% 1.68% 1.68%** Net investment income 1.92% 1.48% 1.17%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. 52 The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Conservative Allocation Fund Year 10/5/05 (a) Ended To 7/31/07 7/31/06 CLASS Y Net asset value, beginning of period $10.57 $10.32 ------ ------ Increase from investment operations: Net investment income (b) $ 0.29 $ 0.16 Net realized and unrealized gain on investments 0.65 0.16 ------ ------ Net increase from investment operations $ 0.94 $ 0.32 ------ ------ Distributions to shareowners: Net investment income $(0.19) $(0.06) Net realized gain (0.02) (0.01) ------ ------ Net increase in net asset value $ 0.73 $ 0.25 ------ ------ Net asset value, end of period $11.30 $10.57 ====== ====== Total return* 8.91% 3.13%*** Ratio of net expenses to average net assets+ ++ 0.90% 1.23%** Ratio of net investment income to average net assets+ ++ 2.64% 1.96%** Portfolio turnover rate 15% 15% Net assets, end of period (in thousands) $ 11 $ 10 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 0.90% 2.19%** Net investment income 2.64% 0.98%** Ratios with waivers of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 0.88% 1.23%** Net investment income 2.66% 1.96%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. The accompanying notes are an integral part of these financial statements. 53 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Moderate Allocation Fund Year Year 8/9/04 (a) Ended Ended To 7/31/07 7/31/06 7/31/05 CLASS A Net asset value, beginning of period $ 11.39 $ 11.15 $ 10.00 -------- -------- ------- Increase from investment operations: Net investment income (b) $ 0.21 $ 0.16 $ 0.15 Net realized and unrealized gain on investments 1.21 0.38 1.27 -------- -------- ------- Net increase from investment operations $ 1.42 $ 0.54 $ 1.42 -------- -------- ------- Distributions to shareowners: Net investment income $ (0.28) $ (0.06) $ (0.04) Net realized gain (0.03) (0.24) (0.23) -------- -------- ------- Net increase in net asset value $ 1.11 $ 0.24 $ 1.15 -------- -------- ------- Net asset value, end of period $ 12.50 $ 11.39 $ 11.15 ======== ======== ======= Total return* 12.58% 4.98% 14.37%*** Ratio of net expenses to average net assets+ ++ 0.65% 0.63% 0.77%** Ratio of net investment income to average net assets+ ++ 1.75% 1.40% 1.37%** Portfolio turnover rate 19% 52% 19% Net assets, end of period (in thousands) $165,090 $148,495 $32,893 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 0.65% 0.63% 1.26%** Net investment income 1.75% 1.40% 0.88%** Ratios with waiver of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 0.65% 0.63% 0.77%** Net investment income 1.75% 1.40% 1.37%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. 54 The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------- Moderate Allocation Fund Year Year 8/9/04 (a) Ended Ended To 7/31/07 7/31/06 7/31/05 CLASS B Net asset value, beginning of period $ 10.92 $ 10.77 $10.00 ------- ------- ------ Increase from investment operations: Net investment income (b) $ 0.11 $ 0.06 $ 0.02 Net realized and unrealized gain on investments 1.16 0.36 0.98 ------- ------- ------ Net increase from investment operations $ 1.27 $ 0.42 $ 1.00 ------- ------- ------ Distributions to shareowners: Net investment income $ (0.19) $ (0.03) $ - Net realized gain (0.03) (0.24) (0.23) ------- ------- ------ Net increase in net asset value $ 1.05 $ 0.15 $ 0.77 ------- ------- ------ Net asset value, end of period $ 11.97 $ 10.92 $10.77 ======= ======= ====== Total return* 11.70% 4.00% 10.11%*** Ratio of net expenses to average net assets+ ++ 1.50% 1.51% 1.67%** Ratio of net investment income to average net assets+ ++ 0.91% 0.51% 0.16%** Portfolio turnover rate 19% 52% 19% Net assets, end of period (in thousands) $60,796 $55,053 $9,781 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.50% 1.51% 2.08%** Net investment income (loss) 0.91% 0.51% (0.25)%** Ratios with waivers of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.49% 1.51% 1.67%** Net investment income 0.92% 0.51% 0.16%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. The accompanying notes are an integral part of these financial statements. 55 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Moderate Allocation Fund Year Year 8/9/04 (a) Ended Ended To 7/31/07 7/31/06 7/31/05 CLASS C Net asset value, beginning of period $ 10.85 $ 10.68 $ 10.00 ------- ------- ------- Increase from investment operations: Net investment income (b) $ 0.12 $ 0.07 $ 0.05 Net realized and unrealized gain on investments 1.15 0.35 0.87 ------- ------- ------- Net increase from investment operations $ 1.27 $ 0.42 $ 0.92 ------- ------- ------- Distributions to shareowners: Net investment income $ (0.21) $ (0.01) $ (0.01) Net realized gain (0.03) (0.24) (0.23) ------- ------- ------- Net increase in net asset value $ 1.03 $ 0.17 $ 0.68 ------- ------- ------- Net asset value, end of period $ 11.88 $ 10.85 $ 10.68 ======= ======= ======= Total return* 11.83% 4.06% 9.32%*** Ratio of net expenses to average net assets+ ++ 1.39% 1.42% 1.67%** Ratio of net investment income to average net assets+ ++ 1.03% 0.60% 0.44%** Portfolio turnover rate 19% 52% 19% Net assets, end of period (in thousands) $47,405 $32,416 $15,223 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.39% 1.42% 2.03%** Net investment income 1.03% 0.60% 0.08%** Ratios with waiver of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.38% 1.42% 1.67%** Net investment income 1.04% 0.60% 0.44%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. 56 The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Moderate Allocation Fund Year 9/23/05 (a) Ended To 7/31/07 7/31/06 CLASS Y Net asset value, beginning of period $ 11.43 $ 11.18 ------- ------- Increase from investment operations: Net investment income (b) $ 0.26 $ 0.17 Net realized and unrealized gain on investments 1.21 0.40 ------- ------- Net increase from investment operations $ 1.47 $ 0.57 ------- ------- Distributions to shareowners: Net investment income $ (0.32) $ (0.08) Net realized gain (0.03) (0.24) ------- ------- Net increase in net asset value $ 1.12 $ 0.25 ------- ------- Net asset value, end of period $ 12.55 $ 11.43 ======= ======= Total return* 12.98% 5.19%*** Ratio of net expenses to average net assets+ ++ 0.29% 0.28%** Ratio of net investment income to average net assets+ ++ 2.09% 1.79%** Portfolio turnover rate 19% 52% Net assets, end of period (in thousands) $24,046 $27,792 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 0.29% 0.28%** Net investment income 2.09% 1.79%** Ratios with waivers of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 0.29% 0.28% Net investment income 2.09% 1.79% (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. The accompanying notes are an integral part of these financial statements. 57 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Growth Allocation Fund Year Year 8/9/04 (a) Ended Ended To 7/31/07 7/31/06 7/31/05 CLASS A Net asset value, beginning of period $ 12.04 $ 11.50 $ 10.00 -------- -------- ------- Increase from investment operations: Net investment income (b) $ 0.15 $ 0.09 $ 0.08 Net realized and unrealized gain on investments 1.61 0.63 1.70 -------- -------- ------- Net increase from investment operations $ 1.76 $ 0.72 $ 1.78 -------- -------- ------- Distributions to shareowners: Net investment income $ (0.23) $ (0.05) $ (0.03) Net realized gain (0.10) (0.13) (0.25) -------- -------- ------- Net increase in net asset value $ 1.43 $ 0.54 $ 1.50 -------- -------- ------- Net asset value, end of period $ 13.47 $ 12.04 $ 11.50 ======== ======== ======= Total return* 14.73% 6.29% 17.96%*** Ratio of net expenses to average net assets+ ++ 0.72% 0.74% 0.81%** Ratio of net investment income to average net assets+ ++ 1.09% 0.74% 0.69%** Portfolio turnover rate 11% 27% 2% Net assets, end of period (in thousands) $157,453 $116,161 $31,212 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 0.72% 0.74% 1.42%** Net investment income 1.09% 0.74% 0.08%** Ratios with waiver of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 0.71% 0.74% 0.81%** Net investment income 1.10% 0.74% 0.69%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. 58 The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Growth Allocation Fund Year Year 8/9/04 (a) Ended Ended To 7/31/07 7/31/06 7/31/05 CLASS B Net asset value, beginning of period $ 10.93 $ 10.50 $ 10.00 ------- ------- ------- Increase (decrease) from investment operations: Net investment income (loss) (b) $ 0.03 $ (0.01) $ 0.01 Net realized and unrealized gain on investments 1.45 0.59 0.74 ------- ------- ------- Net increase from investment operations $ 1.48 $ 0.58 $ 0.75 ------- ------- ------- Distributions to shareowners: Net investment income $ (0.14) $ (0.02) $ - Net realized gain (0.10) (0.13) (0.25) ------- ------- ------- Net increase in net asset value $ 1.24 $ 0.43 $ 0.50 ------- ------- ------- Net asset value, end of period $ 12.17 $ 10.93 $ 10.50 ======= ======= ======= Total return* 13.67% 5.53% 7.59%*** Ratio of net expenses to average net assets+ ++ 1.58% 1.57% 1.71%** Ratio of net investment income (loss) to average net assets+ ++ 0.23% (0.08)% 0.05%** Portfolio turnover rate 11% 27% 2% Net assets, end of period (in thousands) $76,095 $61,373 $10,219 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.60% 1.62% 2.27%** Net investment income (loss) 0.21% (0.13)% (0.51)%** Ratios with waiver of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.57% 1.57% 1.71%** Net investment income (loss) 0.24% (0.08)% 0.05%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. The accompanying notes are an integral part of these financial statements. 59 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Growth Allocation Fund Year Year 8/9/04 (a) Ended Ended To 7/31/07 7/31/06 7/31/05 CLASS C Net asset value, beginning of period $ 11.58 $ 11.10 $ 10.00 ------- ------- ------- Increase (decrease) from investment operations: Net investment income (loss) (b) $ 0.05 $ - $ (0.01) Net realized and unrealized gain on investments 1.53 0.61 1.37 ------- ------- ------- Net increase from investment operations $ 1.58 $ 0.61 $ 1.36 ------- ------- ------- Distributions to shareowners: Net investment income $ (0.16) $ - $ (0.01) Net realized gain (0.10) (0.13) (0.25) ------- ------- ------- Net increase in net asset value $ 1.32 $ 0.48 $ 1.10 ------- ------- ------- Net asset value, end of period $ 12.90 $ 11.58 $ 11.10 ======= ======= ======= Total return* 13.75% 5.51% 13.67%*** Ratio of net expenses to average net assets+ ++ 1.44% 1.46% 1.71%** Ratio of net investment income (loss) to average net assets+ ++ 0.37% 0.02% (0.07)%** Portfolio turnover rate 11% 27% 2% Net assets, end of period (in thousands) $52,861 $33,315 $14,874 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.44% 1.46% 2.13%** Net investment income (loss) 0.37% 0.02% (0.49)%** Ratios with waiver of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.43% 1.46% 1.71%** Net investment income (loss) 0.38% 0.02% (0.07)%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. 60 The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Growth Allocation Fund Year 9/23/05 (a) Ended To 7/31/07 7/31/06 CLASS Y Net asset value, beginning of period $12.13 $11.54 ------ ------ Increase from investment operations: Net investment income (b) $ 0.19 $ 0.13 Net realized and unrealized gain on investments 1.60 0.65 ------ ------ Net increase from investment operations $ 1.79 $ 0.78 ------ ------ Distributions to shareowners: Net investment income $(0.27) $(0.06) Net realized gain (0.10) (0.13) ------ ------ Net increase in net asset value $ 1.42 $ 0.59 ------ ------ Net asset value, end of period $13.55 $12.13 ====== ====== Total return* 14.87% 6.84%*** Ratio of net expenses to average net assets+ ++ 0.36% 0.32%** Ratio of net investment income to average net assets+ ++ 1.40% 1.23%** Portfolio turnover rate 11% 27% Net assets, end of period (in thousands) $2,956 $3,068 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 0.36% 0.32%** Net investment income 1.40% 1.23%** Ratios with waiver of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 0.36% 0.32%** Net investment income 1.40% 1.23%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. The accompanying notes are an integral part of these financial statements. 61 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Aggressive Allocation Fund Year Year 8/9/04 (a) Ended Ended To 7/31/07 7/31/06 7/31/05 CLASS A Net asset value, beginning of period $ 12.39 $ 11.82 $ 10.00 -------- ------- ------- Increase from investment operations: Net investment income (b) $ 0.06 $ 0.01 $ - Net realized and unrealized gain on investments 1.97 0.85 2.14 -------- ------- ------- Net increase from investment operations $ 2.03 $ 0.86 $ 2.14 -------- ------- ------- Distributions to shareowners: Net investment income $ (0.16) $ (0.02) $ - Net realized gain (0.06) (0.27) (0.27) Return of capital - - (0.05) -------- ------- ------- Net increase in net asset value $ 1.81 $ 0.57 $ 1.82 -------- ------- ------- Net asset value, end of period $ 14.20 $ 12.39 $ 11.82 ======== ======= ======= Total return* 16.41% 7.30% 21.57%*** Ratio of net expenses to average net assets+ ++ 0.82% 0.82% 0.86%** Ratio of net investment income (loss) to average net assets+ ++ 0.44% 0.10% (0.04)%** Portfolio turnover rate 18% 51% 3% Net assets, end of period (in thousands) $114,054 $84,775 $20,689 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 0.82% 0.82% 2.14%** Net investment income (loss) 0.44% 0.10% (1.31)%** Ratios with waiver of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 0.81% 0.82% 0.86%** Net investment income (loss) 0.45% 0.10% (0.04)%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. 62 The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Aggressive Allocation Fund Year Year 8/9/04 (a) Ended Ended To 7/31/07 7/31/06 7/31/05 CLASS B Net asset value, beginning of period $ 11.84 $ 11.39 $10.00 ------- ------- ------ Increase (decrease) from investment operations: Net investment loss (b) $ (0.05) $ (0.08) $(0.03) Net realized and unrealized gain on investments 1.88 0.80 1.72 ------- ------- ------ Net increase from investment operations $ 1.83 $ 0.72 $ 1.69 ------- ------- ------ Distributions to shareowners: Net investment income $ (0.06) $ - $ - Net realized gain (0.06) (0.27) (0.27) Return of capital - - (0.03) ------- ------- ------ Net increase in net asset value $ 1.71 $ 0.45 $ 1.39 ------- ------- ------ Net asset value, end of period $ 13.55 $ 11.84 $11.39 ======= ======= ====== Total return* 15.49% 6.36% 17.02%*** Ratio of net expenses to average net assets+ ++ 1.66% 1.64% 1.76%** Ratio of net investment loss to average net assets+ ++ (0.39)% (0.70)% (0.26)%** Portfolio turnover rate 18% 51% 3% Net assets, end of period (in thousands) $37,749 $30,382 $5,845 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.69% 1.69% 2.81%** Net investment loss (0.42)% (0.75)% (1.31)%** Ratios with waiver of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.64% 1.64% 1.76%** Net investment loss (0.38)% (0.70)% (0.26)%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. The accompanying notes are an integral part of these financial statements. 63 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Aggressive Allocation Fund Year Year 8/9/04 (a) Ended Ended To 7/31/07 7/31/06 7/31/05 CLASS C Net asset value, beginning of period $ 12.00 $ 11.54 $10.00 ------- ------- ------ Increase (decrease) from investment operations: Net investment loss (b) $ (0.03) $ (0.08) $(0.04) Net realized and unrealized gain on investments 1.90 0.81 1.88 ------- ------- ------ Net increase from investment operations $ 1.87 $ 0.73 $ 1.84 ------- ------- ------ Distributions to shareowners: Net investment income $ (0.08) $ - $ - Net realized gain (0.06) (0.27) (0.27) Return of capital - - (0.03) ------- ------- ------ Net increase in net asset value $ 1.73 $ 0.46 $ 1.54 ------- ------- ------ Net asset value, end of period $ 13.73 $ 12.00 $11.54 ======= ======= ====== Total return* 15.63% 6.37% 18.52%*** Ratio of net expenses to average net assets+ ++ 1.52% 1.56% 1.76%** Ratio of net investment loss to average net assets+ ++ (0.26)% (0.64)% (0.39)%** Portfolio turnover rate 18% 51% 3% Net assets, end of period (in thousands) $23,584 $15,524 $7,144 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.52% 1.56% 2.74%** Net investment loss (0.26)% (0.64)% (1.37)%** Ratios with waiver of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.52% 1.56% 1.76%** Net investment loss (0.26)% (0.64)% (0.39)%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. 64 The accompanying notes are an integral part of these financial statements. Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Aggressive Allocation Fund Year 9/23/05 (a) Ended To 7/31/07 7/31/06 CLASS Y Net asset value, beginning of period $12.41 $11.87 ------ ------ Increase from investment operations: Net investment income (b) $ 0.14 $ 0.06 Net realized and unrealized gain on investments 1.97 0.78 ------ ------ Net increase from investment operations $ 2.11 $ 0.84 ------ ------ Distributions to shareowners: Net investment income $(0.20) $(0.03) Net realized gain (0.06) (0.27) ------ ------ Net increase in net asset value $ 1.85 $ 0.54 ------ ------ Net asset value, end of period $14.26 $12.41 ====== ====== Total return* 17.10% 7.13%*** Ratio of net expenses to average net assets+ ++ 0.39% 0.37%** Ratio of net investment income to average net assets+ ++ 1.01% 0.63%** Portfolio turnover rate 18% 51% Net assets, end of period (in thousands) $3,171 $4,607 Ratios with no waivers of management fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 0.39% 0.37%** Net investment income 1.01% 0.63%** Ratios with waiver of management fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 0.39% 0.37%** Net investment income 1.01% 0.63%** (a) Commencement of operations. (b) 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. ** Annualized. + 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. *** Not Annualized. The accompanying notes are an integral part of these financial statements. 65 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 7/31/07 - -------------------------------------------------------------------------------- 1. Organization and Significant Accounting Policies Pioneer Ibbotson Asset Allocation Series (the Trust) was organized as a Delaware statutory trust on April 22, 2004 (amended July 1, 2004) and was 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 is to seek long-term capital growth and current income. The Moderate Fund seeks long-term capital growth and current income. The Growth Fund seeks long-term capital growth and current income. The Aggressive Fund seeks 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 Investment funds ("underlying 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. 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. Information regarding the Funds' principal investment risks is contained in the Funds' prospectuses. Please refer to those documents when considering the Funds' investment risks. Each Fund offers four classes of shares designated Class A, Class B, Class C and Class Y. Each class of shares represents an interest in the same portfolio of investments of the Fund and has equal rights to voting, redemptions, dividends and liquidation proceeds, except that each class of shares can bear different transfer agent and distribution 66 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- fees and have exclusive voting rights with respect to the distribution plans that have been adopted by Class A, Class B and Class C shareowners, respectively. There is no distribution plan for Class Y shares. The financial statements have been prepared in accordance with U.S. generally accepted accounting principles that require the management of the Fund 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. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and Federal income tax purposes. B. Federal Income Taxes It is the Funds' policy to comply with the requirements of the Internal Revenue Service 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. The amount and characterization of distributions to shareowners for financial reporting purposes is determined in accordance with Federal income tax rules. Therefore, the source of the Funds' distributions may be shown in the accompanying financial statements as either from or in excess of net investment income or net realized 67 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 7/31/07 (continued) - -------------------------------------------------------------------------------- gain on investment transactions, or from paid-in capital, depending on the type of book/tax differences that may exist. At July 31, 2007, 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 Accumulated Net Investment Realized Gain/ Portfolio Income (Loss) (Loss) - -------------------------------------------------------------------------------- Conservative Allocation Fund $ 90,427 $ (90,427) Moderate Allocation Fund 1,554,647 (1,554,647) Growth Allocation Fund 1,823,164 (1,823,164) Aggressive Allocation Fund 1,458,165 (1,458,165) The tax character of distributions paid during the year ended July 31, 2007 was as follows: Ordinary Long-Term Fund Income Capital Gains Total - -------------------------------------------------------------------------------- Conservative Fund $ 514,160 $ 54,191 $ 568,351 Moderate Fund 6,048,120 702,806 6,750,926 Growth Fund 3,901,473 2,022,290 5,923,763 Aggressive Fund 1,544,770 684,841 2,229,611 The tax character of distributions paid during the year ended July 31, 2006 was as follows: Ordinary Long-Term Fund Income Capital Gains Total - -------------------------------------------------------------------------------- Conservative Fund $ 42,282 $ 5,745 $ 48,027 Moderate Fund 1,203,891 5,304,864 6,508,755 Growth Fund 467,663 1,821,408 2,289,071 Aggressive Fund 99,271 2,267,135 2,366,406 68 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- The following shows the components of distributable earnings on a Federal income tax basis at July 31, 2007: Undistributed Undistributed Net Unrealized Ordinary Long-Term Appreciation Fund Income Capital Gains (Depreciation) - -------------------------------------------------------------------------------- Conservative Fund $ 509,024 $ 350,816 $ 879,259 Moderate Fund 2,540,036 8,080,888 27,770,548 Growth Fund 933,087 7,939,477 30,877,598 Aggressive Fund 321,362 5,047,827 23,654,501 The difference between book-basis and tax-basis unrealized appreciation is attributable to the tax deferral of losses on wash sales. C. Fund Shares The Board of Trustees has authorized the issuance of four classes of shares, designated as Class A, Class B, Class C and Class Y. Additional classes of shares have been authorized but are not referenced in the Fund's prospectus. The Conservative Allocation Fund, Class A, Class B and Class C shares were first offered for sale to the public on May 12, 2005. Class Y shares were first offered for sale to the public on October 5, 2005. The Moderate Allocation, Growth Allocation and Aggressive Allocation Funds Class A, Class B and Class C shares were first offered for sale to the public on August 9, 2004. Class Y shares of these three Funds were first publicly offered on the following dates: Moderate Allocation on 9/23/05, Growth Allocation on 9/23/05 and Aggressive Allocation on 9/23/05. Shares of each class represent an interest in the same portfolio of investments of the Fund and have equal rights as to voting, redemptions, dividends and liquidation, except that the level of transfer agent and distribution fees may differ among classes. Class A, Class B, and Class C shareowners have exclusive voting rights with respect to distribution plans for each class. There is no distribution plan for Class Y. 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 UniCredito Italiano S.p.A. (UniCredito Italiano), earned the following in underwriting commissions during the year ended July 31, 2007: 69 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 7/31/07 (continued) - -------------------------------------------------------------------------------- Fund Amount - ---- ------ Conservative Fund $ 18,852 Moderate Fund $112,258 Growth Fund $190,221 Aggressive Fund $130,388 D. Class Allocations 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). Shareowners of each class share all expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services, which are allocated based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). 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 the respective percentage of adjusted net assets at the beginning of the day. 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, at the same time, and in the same amount, except that Class A, Class B and Class C shares can bear different transfer agent and distribution fees. E. Repurchase Agreements With respect to repurchase agreements entered into by the Funds, the value of the underlying securities (collateral), including accrued interest received from counterparties, is required to be at least equal to or in excess of the value of the repurchase agreement at the time of the purchase. The collateral for all repurchase agreements is held in safekeeping in the customer-only account of the Funds' custodian, or subcustodians. The Fund's investment adviser, PIM is responsible for determining that the value of the collateral remains at least equal to the repurchase price. 70 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 2. Management Agreement PIM, a wholly owned indirect subsidiary of UniCredito Italiano, is the Funds' investment adviser, and manages the Funds' portfolios. Management fees are calculated daily at the following annual rates on Pioneer managed assets: Management Fee as a Percentage of each Fund's Average Fund Daily Net Assets - ---- ---------------- Conservative Fund 0.13% Moderate Fund 0.13% Growth Fund 0.13% Aggressive Fund 0.13% For each Fund, management fees will be calculated daily at a 0.17% annual rate on any third party managed assets. 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. At July 31, 2007, the following amounts were payable to PIM relating to management fees and certain other services and are included in due to affiliates: Fund Amount - ---- ------ Conservative Fund $ 5,066 Moderate Fund $40,831 Growth Fund $40,330 Aggressive Fund $24,619 PIM 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 71 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 7/31/07 (continued) - -------------------------------------------------------------------------------- in effect through December 1, 2009 for Class A shares and through December 1, 2008 for Class B and Class C shares: 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 provides substantially all transfer agent and shareowner services to the Funds at negotiated rates. Included in due to affiliates are the following amounts of transfer agent fees payable to PIMSS at July 31, 2007: Fund Amount - ---- ------ Conservative Fund $ 4,248 Moderate Fund $37,180 Growth Fund $49,387 Aggressive Fund $33,826 4. Distribution Plans The Funds have adopted Plans of Distribution with respect to Class A, Class B and Class C shares (Class A Plan, Class B Plan and Class C Plan, respectively) in accordance with Rule 12b-1 of the Investment Company Act of 1940. Pursuant to the Class A Plan, the Funds pay PFD a service fee of up to 0.25% of the Fund's average daily net assets attributable to Class A shares in reimbursement of its actual expenditures to finance activities primarily intended to result in the sale of Class A shares. Pursuant to the Class B Plan and the Class C Plan, the Funds pay PFD 1.00% of the average daily net assets attributable to each class of shares. The fee 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. At July 31, 2007 72 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- the following fees were payable to PFD relating to distribution and service fees and are included in due to affiliates: Fund Amount - ---- ------ Conservative Fund $ 18,023 Moderate Fund $138,615 Growth Fund $155,648 Aggressive Fund $ 84,045 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 18 months of purchase. Class B shares that are redeemed within five years of purchase will be 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%. For the year ended July 31, 2007, the following CDSC's were paid to PFD: Fund Amount - ---- ------ Conservative Fund $ 15,816 Moderate Fund $229,007 Growth Fund $216,762 Aggressive Fund $113,971 5. Merger Information On September 22, 2005, the beneficial owners of certain AmSouth Funds approved a proposed merger agreement and Plan of Reorganization that provided for the mergers listed below. These tax-free reorganizations were accomplished on September 26, 2005 by exchanging all of the AmSouth Fund's net assets for shares of the applicable Pioneer Ibbotson Fund, based upon the Fund's Class A, Class B and Class Y shares' ending net asset values, respectively. The following charts show the details of the reorganizations as of that closing date ("Closing Date"): 73 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 7/31/07 (continued) - -------------------------------------------------------------------------------- Pioneer AmSouth AmSouth Pioneer Moderate Growth and Moderate Growth Moderate Allocation Fund Income Fund and Income Fund Allocation Fund (Pre-Reorganization) (Pre-Reorganization) (Pre-Reorganization) (Post-Reorganization) - -------------------------------------------------------------------------------------------------------------- Net Assets Class A $40,918,497 $ 47,985,562 $20,156,983 $109,061,042 Class B $11,519,608 $ 19,432,527 $13,837,388 $ 44,789,524 Class C $17,124,590 $ 17,124,590 Class Y $ 54,096,317 Class I $ 40,453,115 $13,643,202 Total Net Assets $69,562,695 $107,871,204 $47,637,573 $225,071,473 Shares Outstanding Class A 3,660,813 4,708,295 2,060,226 9,756,384 Class B 1,068,504 1,914,637 1,423,053 4,155,001 Class C 1,602,231 1,602,231 Class Y 4,838,972 Class I 3,953,925 1,390,285 Shares Issued in Reorganization Class A 6,095,571 Class B 3,086,496 Class Y 4,838,972 Unrealized Appreciation Accumulated Gain On Closing On Closing Date Date - ------------------------------------------------------------- AmSouth Growth and Income Fund $8,743,400 $2,595,540 AmSouth Moderate Growth and Income Fund $1,726,341 $ 851,251 74 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Pioneer Growth AmSouth Pioneer Growth Allocation Fund Growth Fund Allocation Fund (Pre-Reorganization) (Pre-Reorganization) (Post-Reorganization) - --------------------------------------------------------------------------------------------- Net Assets Class A $38,438,637 $29,688,353 $ 68,126,990 Class B $12,106,330 $30,697,135 $ 42,803,465 Class C $16,868,540 $ 16,868,540 Class Y $ 7,798,364 Class I $ 7,798,364 Total Net Assets $67,413,507 $68,183,852 $135,597,359 Shares Outstanding Class A 3,332,335 3,007,670 5,905,091 Class B 1,149,798 3,155,064 4,065,072 Class C 1,516,287 1,516,287 Class Y 675,780 Class I 786,487 Shares Issued in Reorganization Class A 2,572,757 Class B 2,915,273 Class Y 675,780 Unrealized Appreciation Accumulated Gain On Closing On Closing Date Date - ---------------------------------------------------------- AmSouth Growth Fund $5,108,682 $1,905,046 75 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 7/31/07 (continued) - -------------------------------------------------------------------------------- Pioneer Aggressive AmSouth Aggressive Pioneer Aggressive Allocation Fund Growth Fund Allocation Fund (Pre-Reorganization) (Pre-Reorganization) (Post-Reorganization) - --------------------------------------------------------------------------------------------- Net Assets Class A $25,582,418 $20,930,973 $46,513,391 Class B $ 7,003,626 $15,538,420 $22,542,046 Class C $ 8,276,330 $ 8,276,330 Class Y $14,847,156 Class I $14,847,156 Total Net Assets $40,862,374 $51,316,549 $92,178,923 Shares Outstanding Class A 2,154,549 2,128,158 3,917,819 Class B 613,143 1,653,405 1,973,727 Class C 715,365 715,365 Class Y 1,250,780 Class I 1,509,339 Shares Issued in Reorganization Class A 1,763,269 Class B 1,360,585 Class Y 1,250,780 Unrealized Appreciation Accumulated Gain On Closing On Closing Date Date - -------------------------------------------------------- AmSouth Aggressive Growth Fund $6,818,836 $1,802,796 6. New Pronouncements On July 13, 2006, the Financial Accounting Standards Board (FASB) released FASB Interpretation No. 48 "Accounting for Uncertainty in Income Taxes" (FIN 48). FIN 48 provides guidance for how uncertain tax positions should be recognized, measured, presented and disclosed in the financial statements. FIN 48 requires the evaluation of tax positions taken or expected to be taken in the course of preparing the Fund's tax returns to determine whether the tax positions have a "more-likely-than-not" probability of being sustained by the applicable tax authority. Tax positions deemed to not meet the more-likely-than-not threshold would be recorded as a tax benefit or expense in the reporting period in which they are realized. Adoption of FIN 48 is required for fiscal years beginning after December 15, 2006 and is to be applied to all open tax years as of no later than December 31, 76 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 2007. At this time, management is evaluating the implications of FIN 48 and any impact in the financial statements has not yet been determined. In addition, in September 2006, Statement of Financial Accounting Standards No. 157, Fair Value Measurements (SFAS 157), was issued and is effective for fiscal years beginning after November 15, 2007. SFAS 157 defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. Management is currently evaluating the impact the adoption of SFAS 157 will have on the Trust's financial statement disclosures. 77 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 7/31/07 (continued) - -------------------------------------------------------------------------------- ADDITIONAL INFORMATION (unaudited) For the fiscal year ended July 31, 2007, certain dividends paid by the Funds may be subject to a maximum tax rate of 15%, as provided for by the Jobs and Growth Tax Relief Reconciliation Act (the Act) of 2003. The Funds designated up to the maximum amount of such dividends allowable under the Act, as taxed at a maximum rate of 15%. Complete information was computed and reported in conjunction with your 2006 Form 1099-DIV. The qualifying percentage of ordinary income dividends for the purposes of the corporate dividends received deduction was: Moderate Fund 17.62% Growth Fund 27.87% Aggressive Fund 49.69% Conservative Fund 11.22% 78 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM - -------------------------------------------------------------------------------- To the Board of Trustees and Shareowners of Pioneer Ibbotson Asset Allocation Series: We have audited the accompanying statements of assets and liabilities, including the schedules of investments, 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) as of July 31, 2007, and the related statements of operations for the year then ended, the statements of changes in net assets for the two years then ended and 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, 2007, by correspondence with the Funds' custodian and the transfer agent of the underlying funds. 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, 2007, the results of their operations, the changes in their net assets for the two years 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 17, 2007 79 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- TRUSTEES, OFFICERS AND SERVICE PROVIDERS - -------------------------------------------------------------------------------- Investment Adviser Pioneer Investment Management, Inc. Custodian 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. Trustees and Officers The trust's Board of Trustees provides broad supervision over the funds' affairs. The officers of the trust are responsible for the trust's operations. The trust's Trustees and officers are listed below, together with their principal occupations during the past five years. Trustees who are interested persons of the trust within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the trust are referred to as Independent Trustees. Each of the Trustees (except Mr. Bock) serves as a trustee of each of the 83 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). Mr. Bock serves as Trustee of 82 of the 83 Pioneer Funds. The address for all Interested Trustees and all officers of the trust is 60 State Street, Boston, Massachusetts 02109. 80 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- INTERESTED TRUSTEES - -------------------------------------------------------------------------------- Positions Held Length of Service Principal Occupation Other Directorships Name and Age With the Fund and Term of Office During Past Five Years Held by this Trustee John F. Cogan, Jr. (81)* Chairman of the Trustee since 2004. Deputy Chairman and a Director of None Board, Trustee and Serves until a Pioneer Global Asset Management President successor trustee is S.p.A. ("PGAM"); Non-Executive elected or earlier Chairman and a Director of Pioneer retirement or removal. Investment 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); President and a Director of Pioneer Alternative Investment Management (Bermuda) Limited and affiliated funds; Director of PIOGLOBAL Real Estate Investment Fund (Russia) (until June 2006); Director of Nano-C, Inc. (since 2003); Director of Cole Management Inc. (since 2004); Director of Fiduciary Counseling, Inc.; President and Director of Pioneer Funds Distributor, Inc. ("PFD") (until May 2006); President of all of the Pioneer Funds; and Of Counsel, Wilmer Cutler Pickering Hale and Dorr LLP (counsel to PIM-USA and the Pioneer Funds) - ------------------------------------------------------------------------------------------------------------------------------------ 81 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- INDEPENDENT TRUSTEES - -------------------------------------------------------------------------------- Name, Age and Positions Held Length of Service Principal Occupation Other Directorships Address With the Fund and Term of Office During Past Five Years Held by this Trustee David R. Bock (63) Trustee Trustee since 2005. Executive Vice President and Chief Director of The 3050 K. Street NW, Serves until a Financial Officer, I-trax, Inc. Enterprise Social Washington, DC 20007 successor trustee is (publicly traded health care Investment Company elected or earlier services company) (2004 - present); (privately-held retirement or removal. Partner, Federal City Capital affordable housing Advisors (boutique merchant bank) finance company); and (1997 to 2004); and Executive Vice Director of New York President and Chief Financial Mortgage Trust Officer, Pedestal Inc. (publicly traded (internet-based mortgage trading mortgage REIT) company) (2000 - 2002) - ------------------------------------------------------------------------------------------------------------------------------------ Mary K. Bush (59) Trustee Trustee since 2004. President, Bush International, LLC Director of Brady 3509 Woodbine Street, Serves until a (international financial advisory Corporation Chevy Chase, MD 20815 successor trustee is firm) (industrial elected or earlier identification and retirement or removal. specialty coated material products manufacturer); Director of Briggs & Stratton Co. (engine manufacturer); Director of UAL Corporation (airline holding company) and Director of Mantech International Corporation (national security, defense, and intelligence technology firm) - ------------------------------------------------------------------------------------------------------------------------------------ Margaret B.W. Graham (60) Trustee Trustee since 2004. Founding Director, Vice-President None 1001 Sherbrooke Street West, Serves until a and Corporate Secretary, The Montreal, Quebec, Canada successor trustee is Winthrop Group, Inc. (consulting H3A 1G5 elected or earlier firm); and Desautels Faculty of retirement or removal. Management, McGill University - ------------------------------------------------------------------------------------------------------------------------------------ 82 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- INDEPENDENT TRUSTEES - -------------------------------------------------------------------------------- Name, Age and Positions Held Length of Service Principal Occupation Other Directorships Address With the Fund and Term of Office During Past Five Years Held by this Trustee Thomas J. Perna (56) Trustee Trustee since 2006. Private investor (2004 - present); Director of 89 Robbins Avenue, Serves until a and Senior Executive Vice Quadriserv Inc. Berkeley Heights, NJ 07922 successor trustee is President, The Bank of New York (technology products elected or earlier (financial and securities services) for securities retirement or removal. (1986 - 2004) lending industry) - ------------------------------------------------------------------------------------------------------------------------------------ Marguerite A. Piret (59) Trustee Trustee since 2004. President and Chief Executive Director of New 200 State Street, 12th Floor, Serves until a Officer, Newbury, Piret & Company, America High Income Boston, MA 021098 successor trustee is Inc. (investment banking firm) Fund, Inc. elected or earlier (closed-end retirement or removal. investment company) - ------------------------------------------------------------------------------------------------------------------------------------ John Winthrop (71) Trustee Trustee since 2004. President, John Winthrop & Co., None One North Adgers Wharf, Serves until a Inc. (private investment firm) Charleston, SC 29401 successor trustee is elected or earlier retirement or removal. - ------------------------------------------------------------------------------------------------------------------------------------ 83 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- TRUST OFFICERS - -------------------------------------------------------------------------------- Positions Held Length of Service Principal Occupation Other Directorships Name and Age With the Fund and Term of Office During Past Five Years Held by this Officer Daniel K. Kingsbury (48)* Executive Vice Since March 2007. Director, CEO and President of None President Serves until a Pioneer Investment Management USA successor trustee is Inc.; Pioneer Investment elected or earlier Management, Inc. and Pioneer retirement or removal. Institutional Asset Management, Inc. (since March 2007); Executive Vice President of all of the Pioneer Funds (since March 2007); Director of Pioneer Global Asset Management S.p.A. (since March 2007); Head of New Markets Division, Pioneer Global Asset Management S.p.A. (2000 - 2007) - ------------------------------------------------------------------------------------------------------------------------------------ Dorothy E. Bourassa (59) Secretary Since 2004. Serves Secretary of PIM-USA; Senior Vice None at the discretion of President - Legal of Pioneer; the Board Secretary/Clerk of most of PIM-USA's subsidiaries; and Secretary of all of the Pioneer Funds since September 2003 (Assistant Secretary from November 2000 to September 2003) - ------------------------------------------------------------------------------------------------------------------------------------ Christopher J. Kelley (42) Assistant Secretary Since 2004. Serves Vice President and Senior Counsel None at the discretion of of Pioneer since July 2002; Vice the Board President and Senior Counsel of BISYS Fund Services, Inc. (April 2001 to June 2002); Senior Vice President and Deputy General Counsel of Funds Distributor, Inc. (July 2000 to April 2001); and Assistant Secretary of all of the Pioneer Funds since September 2003 - ------------------------------------------------------------------------------------------------------------------------------------ Vincent Nave (62) Treasurer Since 2004. Serves Vice President - Fund Accounting, None at the discretion of Administration and Controllership the Board Services of Pioneer; and Treasurer of all of the Pioneer Funds - ------------------------------------------------------------------------------------------------------------------------------------ 84 Pioneer Ibbotson Asset Allocation Series - -------------------------------------------------------------------------------- TRUST OFFICERS - -------------------------------------------------------------------------------- Positions Held Length of Service Principal Occupation Other Directorships Name and Age With the Fund and Term of Office During Past Five Years Held by this Officer Mark E. Bradley (47) Assistant Treasurer Since 2004. Serves Deputy Treasurer of Pioneer since None at the discretion of 2004; Treasurer and Senior Vice the Board President, CDC IXIS Asset Management Services from 2002 to 2003; and Assistant Treasurer of all of the Pioneer Funds since November 2004 - ------------------------------------------------------------------------------------------------------------------------------------ Luis I. Presutti (42) Assistant Treasurer Since 2004. Serves Assistant Vice President - Fund None at the discretion of Accounting, Administration and the Board Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ------------------------------------------------------------------------------------------------------------------------------------ Gary Sullivan (49) Assistant Treasurer Since 2004. Serves Fund Accounting Manager - Fund None at the discretion of Accounting, Administration and the Board Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ------------------------------------------------------------------------------------------------------------------------------------ Katherine Kim Sullivan (33) Assistant Treasurer Since 2004. Serves Fund Administration Manager - Fund None at the discretion of Accounting, Administration and the Board Controllership Services since June 2003; Assistant Vice President - Mutual Fund Operations of State Street Corporation from June 2002 to June 2003 (formerly Deutsche Bank Asset Management); and Assistant Treasurer of all of the Pioneer Funds since September 2003 - ------------------------------------------------------------------------------------------------------------------------------------ Teri W. Anderholm (47) Chief Compliance Since January 2007. Chief Compliance Officer of None Officer Serves at the Pioneer since December 2006 and of discretion all the Pioneer Funds since of the Board January 2007; Vice President and Compliance Officer, MFS Investment Management (August 2005 to December 2006); Consultant, Fidelity Investments (February 2005 to July 2005); Independent Consultant (July 1997 to February 2005) - ------------------------------------------------------------------------------------------------------------------------------------ * Mr. Cogan is an Interested Trustee because he is an officer or director of the funds' investment adviser and certain of its affiliates. The outstanding capital stock of PFD, Pioneer and PIMSS is indirectly wholly owned by UniCredito Italiano S.p.A. ("UniCredito Italiano"), one of the largest banking groups in Italy. Pioneer, the funds' investment adviser, provides investment management and financial services to mutual funds, institutional and other clients. 85 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 86 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 87 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 88 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 89 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 90 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 91 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 92 - -------------------------------------------------------------------------------- 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 Telecommunications Device for the Deaf (TDD) 1-800-225-1997 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: www.pioneerinvestments.com Please consider the Fund's investment objectives, risks, charges and expenses carefully before investing. The prospectus contains this and other information about the Fund and should be read carefully before you invest. To obtain a prospectus and for other information on any Pioneer fund, call 1-800-225-6292 or visit our website www.pioneerinvestments.com. The Fund files a complete statement 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; (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 Series, including fees associated with the filings of its Form N-1A, totaled approximately $136,700 in 2007 and approximately $132,940 in 2006. (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 audit-related services in 2007 or 2006. (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 $31,280 in 2007 and $28,560 in 2006. (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 other services provided to the Series during the fiscal years ended July 31, 2007 and 2006. (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. 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 Fund's 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 Fund. For the years ended July 31, 2007 and 2006, there were no services provided to an affiliate that required the Fund's 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 Fund and affiliates, as previously defined, totaled approximately $31,280 in 2007 and $28,560 in 2006. (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, 2007 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, 2007 By (Signature and Title)* /s/ Vincent Nave Vincent Nave, Treasurer Date September 28, 2007 * Print the name and title of each signing officer under his or her signature.