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 811-01605 Pioneer Balanced Fund (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: December 31 Date of reporting period: January 1, 2006 through June 30, 2006 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 ------- BALANCED FUND Semiannual Report 6/30/06 [LOGO] PIONEER Investments(R) Table of Contents - -------------------------------------------------------------------------------- Letter to Shareowners 2 Portfolio Management Discussion 4 Portfolio Summary 9 Prices and Distributions 10 Performance Update 11 Comparing Ongoing Fund Expenses 15 Schedule of Investments 17 Financial Statements 32 Notes to Financial Statements 40 Trustees, Officers and Service Providers 49 President's Dear Shareowner, - -------------------------------------------------------------------------------- We know from the history of the capital markets that sudden shifts in investor sentiment can occur with little warning, based on an assortment of events. We believe such a shift in sentiment is occurring in reaction to the possibility that U.S. economic growth may slow in the second half of 2006. While U.S. markets fell in late May and early June, the economic events of the six- and 12-month periods ending June 30, 2006, have actually been characterized by continued low inflation at home and strong growth prospects abroad with rising commodity and stock prices. According to the International Monetary Fund, international economic growth in 2004-5 was the fastest of any two-year period in more than 30 years, and 2006 growth is projected to match the healthy growth of 2005. The growth has been broad-based, with Europe, Japan, and emerging market economies all showing strength. The result has been rising prices across a broad range of commodities, increasing corporate profits, and higher interest rates. The U.S. bond markets' concern has been that strong economic growth would spark inflation - we have already seen commodity prices rise, and U.S. labor costs are threatening to increase, since we are close to full employment. That may also be a reason why public sentiment is becoming uneasy. Despite strong first quarter economic growth, the U.S. economy for the second half of the year may slow in reaction to past increases in interest rates and energy costs. Thus far the only sign of such a slowdown has been a cooling housing market. Yet many observers believe a slower growing economy could be welcomed by the markets. The U.S. Federal Reserve has continued its program of measured short-term interest rate increases. However, the Fed Chairman, Ben Bernanke, indicated that inflation may moderate, which would permit the Fed to stop raising interest rates. Such action could have positive effects for both consumers and investors over the intermediate-to-longer term. By restraining inflation, the Fed may also limit upward 2 Letter pressure on longer-maturity bond yields and downward pressure on stocks' price/earnings ratios. In summary, we think security market valuations remain reasonable, and yet there are no guarantees in investing. The unpredictability reinforces the importance of Pioneer's message that investors should remain diversified, take a long-term view, and base investment decisions on economic and market fundamentals, rather than on emotion. Our investment philosophy and approach continue to be based on the use of fundamental research to identify a range of opportunities that offer an attractive balance of risk and reward to help shareowners work toward their long-term goals. Respectfully, /s/ Osbert M. Hood Osbert M. Hood, President Pioneer Investment Management, Inc. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund 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 Balanced Fund - -------------------------------------------------------------------------------- PORTFOLIO MANAGEMENT DISCUSSION 6/30/06 - -------------------------------------------------------------------------------- The economy grew at a healthy pace during the first six months of 2006, although some early signs emerged to indicate that the rate of economic growth might be slowing. Stocks generally delivered modest returns over the six months, despite slumping in May and June on worries that the Federal Reserve might raise interest rates further than had been anticipated and hold back economic growth. Small- and mid-cap stocks continued to outperform large-caps, and benchmarks for value stocks recorded higher gains than growth stock indices. In the fixed income market, interest rates across the yield curve - among securities of all maturities - rose, and bond prices generally declined. Shorter-duration strategies tended to produce better returns than long-duration strategies, especially in high-grade securities. High-yield, below-investment grade bonds outperformed higher-quality securities early in the year, but slumped along with stocks in the final two months. In the following interview, Timothy Mulrenan, who is responsible for the equity portfolio of Pioneer Balanced Fund, and Richard Schlanger, who is responsible for the Fund's fixed-income portfolio, discuss the factors that influenced the Fund's performance over the six months ended June 30, 2006. Q: How did the Fund perform during the first half of 2006? A: Pioneer Balanced Fund, Class A shares, had flat returns during the six months ending June 30, 2006, with a total return of 0.00%, at net asset value. Over the same time period, the S&P 500 Index and the Lehman Brothers Aggregate Bond Index returned 2.71% and -0.72%, respectively. During the same six months, the average return of 577 funds in Lipper's Mixed-Asset Target Allocation Growth Fund category was 2.38%. 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. 4 Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Q: What were the Fund's principal investment strategies during the six months? A: We maintained a slight overweighting in equities, which comprised about 63% of assets on June 30, 2006, compared to a typical allocation of 60%. Within the equity portfolio, we maintained our focus on large-cap companies that have experienced consistent growth. This emphasis, however, did not help performance as value stocks and small-company stocks outperformed the stable growth companies that we believed offered the most attractive relative values. We made no major sector changes among our equity investments, although we modestly reduced our overweight in energy companies. While we still are impressed by the long-term prospects for the energy sector, we thought near-term growth may begin to slow. We were overweighted in consumer staples and, to a lesser extent, in information technology and health care. We were underweighted in financials, especially banks, because of the vulnerability of their earnings margins as the difference between interest rates of short-term and long-term securities flattens. Moreover, we believe some banks may need to add to their reserves against loan losses. We added to our information technology positions when we invested in Corning, a leader in producing flat-screen panels for televisions and computer monitors. In media, we sold shares of CBS because of concerns that growth in traditional media would slow. At the same time, we invested in cable company Comcast. We also reduced our position in the U.K.-based Vodafone, a major telecommunications service provider, because of our concerns about competitive pressure in Europe. We made no significant changes in our fixed income strategy during the six months, although duration - or sensitivity to interest rate changes - increased somewhat, partly because of the natural lengthening of duration in mortgage securities as mortgage prepayment rates declined. The portfolio's duration was 4.75 years on June 30, 2006, compared to 4.55 years six months earlier. We invested opportunistically, buying bonds of Sevan Marine, a Norwegian oil field services company, partly because we favored the prospects of the Norwegian currency, the Krone. We also invested in collateralized mortgage obligations. As we did this, we sold 5 Pioneer Balanced Fund - -------------------------------------------------------------------------------- PORTFOLIO MANAGEMENT DISCUSSION 6/30/06 (continued) - -------------------------------------------------------------------------------- bonds of Bausch & Lomb, the eye products company, and of Sunsage, a Korean auto parts company. We also slightly upgraded the overall credit quality of the portfolio. On June 30, the portfolio's average credit quality was AA-, with 71.4% of fixed income assets invested in AAA or the equivalent, while just 8.8% of fixed income assets were invested in high-yield corporates. Q: What types of equity investments most influenced performance? A: Among our stock positions, pharmacy chain CVS was a particularly strong performer. The company's sales and profit growth exceeded expectations as the company continued to execute its strategy of buying underperforming assets and increasing their profitability. Cable company Comcast, in which we invested when its stock price was low, succeeded in taking more market share of household expenditures by offering television, Internet and telephone service. Several information technology investments also helped, including Cisco, Hewlett-Packard and First Data, all of which gained while other tech stocks were declining. The Fund's performance was helped because we had very limited exposure to the poor-performing semiconductor industry. Several health care investments held back results, including biotechnology leader Amgen and generic pharmaceutical manufacturer Teva. Investors were concerned about a patent dispute over rights to an anemia drug in which Amgen is involved, while Teva declined after reporting disappointing earnings. We retained both positions as of June 30, 2006. Also detracting from performance was Wrigley, which lowered its earnings forecasts because of investments in new marketing initiatives. We also continued to hold the position in Wrigley, which we believe has a very attractive franchise. Shares of Microsoft declined as the company reduced its earnings forecast due to an increase in investment spending on new marketing and R&D initiatives. Despite the near-term disappointment, we believe that the flow of new products at Microsoft, supported by increased spending, will help drive healthy long-term profit growth. Media giant Viacom performed poorly as cable network advertising sales, in both the U.S. and Europe, softened in recent months. We still view the company as holding some of the highest quality 6 Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- cable network assets and believe the company may deliver above-average long-term growth and profitability. Q: What types of fixed income investments most influenced performance? A: Our relatively short maturity helped in a rising interest rate environment, as did the quality emphasis. In addition, our overweights in mortgage securities helped support results during the period. Holding back results were our positions in some long-duration assets, which were vulnerable to price losses as long-term interest rates rose. We had no major credit problems. Q: What is your investment outlook? A: We anticipate that economic growth will slow in the coming months. The U.S. Federal Reserve Board probably is near the end of its cycle of interest-rate hikes, but other major central banks may continue to raise rates. One consequence could be a further weakening of the U.S. dollar versus other currencies. One positive for fixed income markets is that there still is a lot of liquidity in world markets, which should guard against any dramatic increase in long-term interest rates. Returns of between 5% and 5 1/2% are still very attractive to foreign investors. We expect continued volatility in the domestic equity market over the next several months against a backdrop of a slowing economy, high energy prices, high interest rates and the current slowdown in residential real estate. As a consequence, we believe investors' expectations for corporate profit growth will probably soften. Offsetting these negative influences, however, is the widespread expectation that the Federal Reserve will stop raising interest rates soon. In addition, stock price increases over the past two years have not kept pace with increases in profits. As a consequence, current stock prices, as reflected in price/earnings ratios, are reasonable and provide some downside protection in a volatile environment. The stock market over the past two years has not distinguished between cyclical profits and consistent profits. As a result, we believe that higher-quality growth stocks of companies with good earnings, high returns on equity and high reinvestment rates should perform well. These companies, which we have been emphasizing, are trading at valuations that we do not believe reflect their potential values. 7 Pioneer Balanced Fund - -------------------------------------------------------------------------------- PORTFOLIO MANAGEMENT DISCUSSION 6/30/06 (continued) - -------------------------------------------------------------------------------- When interest rates rise, the prices of fixed income securities in the Fund will generally fall. Conversely, when interest rates fall, the prices of fixed income securities in the Fund will generally rise. Investments in the Fund are subject to possible loss due to the financial failure of underlying securities and their inability to meet their debt obligations. Prepayment risk is the chance that mortgage-backed bonds will be paid off early if falling interest rates prompt homeowners to refinance their mortgages. Forced to reinvest the unanticipated proceeds at lower interest rates, the Fund would experience a decline in income and lose the opportunity for additional price appreciation associated with falling interest rates. Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates, economic, and political conditions. The Fund may invest in mortgage-backed securities, which during times of fluctuating interest rates may increase or decrease more than other fixed-income securities. Mortgage-Backed securities are also subject to pre-payments. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These opinions 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. 8 Pioneer Balanced Fund - -------------------------------------------------------------------------------- PORTFOLIO SUMMARY 6/30/06 - -------------------------------------------------------------------------------- Portfolio Diversification - -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [The following data was represented as a pie chart in the printed material] U.S. Common Stocks 60.2% U.S. Government Securities 23.5% U.S. Corporate Bonds 9.4% Temporary Cash Investment 3.4% Depositary Receipts for International Stocks 1.3% Asset Backed Securities 1.0% Collateralized Mortgage Obligations 1.2% Sector Diversification - -------------------------------------------------------------------------------- (As a percentage of total long-term securities) [The following data was represented as a pie chart in the printed material] U.S. Government Agency Obligations 25.0% Financials 14.6% Information Technology 11.9% Consumer Staples 11.0% Health Care 8.9% Consumer Discretionary 8.3% Industrials 7.9% Energy 6.1% Materials 5.0% Telecommunication Services 0.8% Utilities 0.5% 10 Largest Holdings - -------------------------------------------------------------------------------- (As a percentage of long-term securities)* 1. Berkshire Hathaway, Inc. (Class B) 3.42% 2. CVS Corp. 3.38 3. First Data Corp. 3.35 4. PepsiCo, Inc. 3.33 5. Microsoft Corp. 3.22 6. Northrop Grumman Corp. 2.70 7. Praxair, Inc. 2.45 8. United Parcel Service 2.43 9. Comcast Corp. 2.13 10. National-Oilwell Varco, Inc. 2.00 * This list excludes temporary cash and derivative instruments. Portfolio holdings will vary for other periods. 9 Pioneer Balanced Fund - -------------------------------------------------------------------------------- PRICES AND DISTRIBUTIONS - -------------------------------------------------------------------------------- Net Asset Value Per Share - -------------------------------------------------------------------------------- Class 6/30/06 12/31/05 - ------------ --------- --------- A $9.82 $9.89 B $9.70 $9.77 C $9.78 $9.85 Investor $9.82 $9.90 Distributions Per Share - -------------------------------------------------------------------------------- 1/1/06 - 6/30/06 ------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains - ------------ ------------ --------------- -------------- A $0.7000 $ - $ - B $0.0300 $ - $ - C $0.0300 $ - $ - Investor $0.0900 $ - $ - - -------------------------------------------------------------------------------- INDEX DEFINITIONS - -------------------------------------------------------------------------------- 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 assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. You cannot invest directly in the Indexes. The indexes defined here pertain to the "Value of $10,000 Investment" charts on pages 11-14. 10 Pioneer Balanced Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 6/30/06 CLASS A SHARES - -------------------------------------------------------------------------------- Investment Returns ----------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Balanced Fund at public offering price, compared to that of the Standard & Poor's 500 Index and the Lehman Brothers Aggregate Bond Index. - -------------------------------------------------------- Average Annual Total Returns (As of June 30, 2006) Net Asset Public Offering Period Value (NAV) Price (POP) 10 Years 3.93% 3.45% 5 Years 1.46 0.54 1 Year 3.67 -0.97 - -------------------------------------------------------- [The following data was represented as a mountain chart in the printed material] Pioneer Lehman Brothers Balanced Aggregate Standard & Poor's Fund Bond Index 500 Index ---- ---------- --------- 6/96 9,550 10,000 10,000 11,053 10,815 13,468 6/98 12,448 11,955 17,532 12,380 12,331 21,520 6/00 12,617 12,894 23,081 13,057 14,342 19,660 6/02 11,679 15,579 16,126 12,193 17,200 16,165 6/04 13,231 17,255 19,253 13,545 18,428 20,469 6/06 14,042 18,280 22,234 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 4.50% 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 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 Fund adopted its current name and investment objective on February 3, 1997. Prior to that date, the Fund's name was Pioneer Income Fund and its objective was income from a portfolio of income-producing bonds and stocks. 11 Pioneer Balanced Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 6/30/06 CLASS B SHARES - -------------------------------------------------------------------------------- Investment Returns ----------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Balanced Fund, compared to that of the Standard & Poor's 500 Index and the Lehman Brothers Aggregate Bond Index. - -------------------------------------------------------- Average Annual Total Returns (As of June 30, 2006) If If Period Held Redeemed 10 Years 2.98% 2.98% 5 Years 0.54 0.54 1 Year 2.73 -1.27 - -------------------------------------------------------- [The following data was represented as a mountain chart in the printed material] Pioneer Lehman Brothers Balanced Aggregate Standard & Poor's Fund Bond Index 500 Index ---- ---------- --------- 6/96 10,000 10,000 10,000 11,472 10,815 13,468 6/98 12,800 11,955 17,532 12,609 12,331 21,520 6/00 12,740 12,894 23,081 13,060 14,342 19,660 6/02 11,581 15,579 16,126 11,986 17,200 16,165 6/04 12,874 17,255 19,253 13,057 18,428 20,469 6/06 13,414 18,280 22,234 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 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 Fund adopted its current name and investment objective on February 3, 1997. Prior to that date, the Fund's name was Pioneer Income Fund and its objective was income from a portfolio of income-producing bonds and stocks. 12 Pioneer Balanced Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 6/30/06 CLASS C SHARES - -------------------------------------------------------------------------------- Investment Returns ----------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Balanced Fund, compared to that of the Standard & Poor's 500 Index and the Lehman Brothers Aggregate Bond Index. - -------------------------------------------------------- Average Annual Total Returns (As of June 30, 2006) If If Period Held Redeemed Life-of-Class (1/31/96) 2.95% 2.95% 5 Years 0.54 0.54 1 Year 2.83 2.83 - -------------------------------------------------------- [The following data was represented as a mountain chart in the printed material] Pioneer Lehman Brothers Balanced Aggregate Standard & Poor's Fund Bond Index 500 Index ---- ---------- --------- 6/96 10,000 10,000 10,000 11,517 10,815 13,468 6/98 12,893 11,955 17,532 12,676 12,331 21,520 6/00 12,778 12,894 23,081 13,020 14,342 19,660 6/02 11,530 15,579 16,126 11,928 17,200 16,165 6/04 12,802 17,255 19,253 13,006 18,428 20,469 6/06 13,374 18,280 22,234 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). The performance of Class C shares does not reflect the 1% front-end sales charge in effect prior to February 1, 2004. If you paid a 1% sales charge, your returns would be lower than those shown above. "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 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 Fund adopted its current name and investment objective on February 3, 1997. Prior to that date, the Fund's name was Pioneer Income Fund and its objective was income from a portfolio of income-producing bonds and stocks. 13 Pioneer Balanced Fund - -------------------------------------------------------------------------------- PERFORMANCE UPDATE 6/30/06 INVESTOR CLASS SHARES - -------------------------------------------------------------------------------- Investment Returns ----------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Balanced Fund, compared to that of the Standard & Poor's 500 Index and the Lehman Brothers Aggregate Bond Index. - -------------------------------------------------------- Average Annual Total Returns (As of June 30, 2006) If If Period Held Redeemed Life-of-Class (12/13/04) 2.79% 2.79% 1 Year 3.93 3.93 - -------------------------------------------------------- [The following data was represented as a mountain chart in the printed material] Pioneer Lehman Brothers Balanced Aggregate Standard & Poor's Fund Bond Index 500 Index ---- ---------- --------- 12/04 10,000 10,000 10,000 6/05 9,980 10,251 9,919 6/06 10,372 10,169 10,774 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. Certain Pioneer funds (the "Funds") issued Investor Class shares in connection with the reorganization of Safeco mutual funds. The Funds are not offering additional Investor Class shares except in connection with the reinvestment of dividends on the Funds' outstanding Investor Class shares. All Investor Class shares of the Funds, whenever issued, convert to Class A shares of their respective Funds on December 10, 2006. Investor Class shares are not subject to sales charges. 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 Fund adopted its current name and investment objective on February 3, 1997. Prior to that date, the Fund's name was Pioneer Income Fund and its objective was income from a portfolio of income-producing bonds and stocks. 14 Pioneer Balanced Fund - -------------------------------------------------------------------------------- COMPARING ONGOING FUND EXPENSES - -------------------------------------------------------------------------------- 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 Balanced Fund Based on actual returns from January 1, 2006 through June 30, 2006 Share Class A B C Investor - ------------------------------- ------------ ------------ ------------ ------------ Beginning Account Value $1,000.00 $1,000.00 $1,000.00 $1,000.00 On 1/01/06 Ending Account Value $1,000.00 $ 995.90 $ 995.90 $1,001.00 On 6/30/06 Expenses Paid During Period* $ 6.55 $ 11.23 $ 10.39 $ 5.46 * Expenses are equal to the Fund's annualized expense ratio of 1.32%, 2.27%, 2.10% and 1.10%, for Class A, Class B, Class C and Investor Class shares, respectively, multiplied by the average account value over the period, multiplied by 181/365 (to reflect the one-half year period). 15 Pioneer Balanced Fund - -------------------------------------------------------------------------------- COMPARING ONGOING FUND EXPENSES (continued) - -------------------------------------------------------------------------------- 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 Balanced Fund Based on a hypothetical 5% return per year before expenses, reflecting the period from January 1, 2006 through June 30, 2006 Share Class A B C Investor - ------------------------------- ------------ ------------ ------------ ------------ Beginning Account Value $1,000.00 $1,000.00 $1,000.00 $1,000.00 On 1/01/06 Ending Account Value $1,018.25 $1,013.54 $1,014.38 $1,019.34 On 6/30/06 Expenses Paid During Period* $ 6.61 $ 11.33 $ 10.49 $ 5.51 * Expenses are equal to the Fund's annualized expense ratio of 1.32%, 2.27%, 2.10% and 1.10%, for Class A, Class B, Class C and Investor Class shares, respectively, multiplied by the average account value over the period, multiplied by 181/365 (to reflect the one-half year period). 16 Pioneer Balanced Fund - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) - -------------------------------------------------------------------------------- Shares Value COMMON STOCKS - 63.2% Energy - 5.3% Integrated Oil & Gas - 1.1% 2,400 BP Amoco Plc (A.D.R.) $ 167,064 18,776 Exxon Mobil Corp. 1,151,908 ----------- $ 1,318,972 ----------- Oil & Gas Drilling - 1.4% 37,200 ENSCO International, Inc. $ 1,711,944 ----------- Oil & Gas Equipment & Services - 2.1% 37,188 National-Oilwell Varco, Inc.* $ 2,354,744 ----------- Oil & Gas Exploration & Production - 0.7% 16,400 Encana Corp. (b) $ 863,296 ----------- Total Energy $ 6,248,956 ----------- Materials - 3.7% Gold - 1.3% 28,600 Newmont Mining Corp. (b) $ 1,513,798 ----------- Industrial Gases - 2.4% 53,500 Praxair, Inc. $ 2,889,000 ----------- Total Materials $ 4,402,798 ----------- Capital Goods - 4.5% Aerospace & Defense - 2.6% 49,600 Northrop Grumman Corp. $ 3,177,376 ----------- Industrial Conglomerates - 1.9% 26,400 3M Co. $ 2,132,328 ----------- Total Capital Goods $ 5,309,704 ----------- Commercial Services & Supplies - 0.3% Diversified Commercial Services - 0.3% 9,700 Cintas Corp.*(b) $ 385,672 ----------- Total Commercial Services & Supplies $ 385,672 ----------- Transportation - 2.4% Air Freight & Couriers - 2.4% 34,700 United Parcel Service $ 2,856,851 ----------- Total Transportation $ 2,856,851 ----------- The accompanying notes are an integral part of these financial statements. 17 Pioneer Balanced Fund - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- Shares Value Consumer Durables & Apparel - 1.3% Apparel, Accessories & Luxury Goods - 1.3% 42,800 Liz Claiborne, Inc. $ 1,586,168 ----------- Total Consumer Durables & Apparel $ 1,586,168 ----------- Media - 3.4% Broadcasting & Cable TV - 2.1% 76,600 Comcast Corp.* $ 2,510,948 ----------- Movies & Entertainment - 1.3% 43,797 Viacom, Inc. (Class B) $ 1,569,684 ----------- Total Media $ 4,080,632 ----------- Retailing - 1.5% Apparel Retail - 1.5% 61,900 Ross Stores, Inc. $ 1,736,295 ----------- Total Retailing $ 1,736,295 ----------- Food & Drug Retailing - 3.6% Drug Retail - 3.4% 129,700 CVS Corp. $ 3,981,790 ----------- Food Distributors - 0.1% 3,400 Sysco Corp. $ 103,904 ----------- Hypermarkets & Supercenters - 0.1% 3,700 Wal-Mart Stores, Inc. $ 178,229 ----------- Total Food & Drug Retailing $ 4,263,923 ----------- Food, Beverage & Tobacco - 6.4% Brewers - 0.6% 14,900 Anheuser-Busch Companies, Inc. (b) $ 679,291 ----------- Packaged Foods & Meats - 1.6% 41,000 William Wrigley Jr. Co. $ 1,859,760 ----------- Soft Drinks - 4.2% 24,800 Coca-Cola Co. $ 1,066,896 65,400 PepsiCo, Inc. 3,926,616 ----------- $ 4,993,512 ----------- Total Food, Beverage & Tobacco $ 7,532,563 ----------- 18 The accompanying notes are an integral part of these financial statements. Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Shares Value Household & Personal Products - 0.9% Personal Products - 0.9% 27,200 Estee Lauder Co.* $ 1,051,824 ------------ Total Household & Personal Products $ 1,051,824 ------------ Health Care Equipment & Services - 2.1% Health Care Distributors - 1.2% 21,100 Cardinal Health, Inc. $ 1,357,363 ------------ Health Care Equipment - 0.8% 30,200 Biomet, Inc. $ 944,958 ------------ Health Care Technology - 0.1% 5,100 IMS Health, Inc. $ 136,935 ------------ Total Health Care Equipment & Services $ 2,439,256 ------------ Pharmaceuticals & Biotechnology - 6.5% Biotechnology - 1.9% 34,868 Amgen, Inc.* $ 2,274,440 ------------ Pharmaceuticals - 4.6% 11,100 Eli Lilly & Co. $ 613,497 64,021 Pfizer, Inc. 1,502,573 31,616 Teva Pharmaceutical Industries, Ltd. (b) 998,750 51,500 Wyeth 2,287,115 ------------ $ 5,401,935 ------------ Total Pharmaceuticals & Biotechnology $ 7,676,375 ------------ Banks - 0.3% Diversified Banks - 0.3% 4,620 U.S. Bancorp $ 142,666 4,000 Wachovia Corp. 216,320 ------------ $ 358,986 ------------ Total Banks $ 358,986 ------------ Diversified Financials - 5.1% Asset Management & Custody Banks - 1.3% 47,900 The Bank of New York Co., Inc. $ 1,542,380 ------------ Consumer Finance - 1.7% 38,900 American Express Co. $ 2,070,258 ------------ Investment Banking & Brokerage - 0.7% 9,400 Merrill Lynch & Co., Inc. $ 653,864 ------------ The accompanying notes are an integral part of these financial statements. 19 Pioneer Balanced Fund - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- Shares Value Diversified Financial Services - 1.4% 36,700 Bank of America Corp. $ 1,765,270 ------------ Total Diversified Financials $ 6,031,772 ------------ Insurance - 4.6% Multi-Line Insurance - 0.2% 3,500 American International Group, Inc. $ 206,675 ------------ Property & Casualty Insurance - 4.4% 1,325 Berkshire Hathaway, Inc. (Class B)* $ 4,031,975 47,200 Progressive Corp. 1,213,512 ------------ $ 5,245,487 ------------ Total Insurance $ 5,452,162 ------------ Software & Services - 6.5% Data Processing & Outsourced Services - 3.3% 87,500 First Data Corp. $ 3,941,000 ------------ Systems Software - 3.2% 162,900 Microsoft Corp. $ 3,795,570 ------------ Total Software & Services $ 7,736,570 ------------ Technology Hardware & Equipment - 4.1% Communications Equipment - 2.8% 67,600 Cisco Systems, Inc.* $ 1,320,228 29,300 Corning, Inc.* 708,767 33,400 Qualcomm, Inc. 1,338,338 ------------ $ 3,367,333 ------------ Computer Hardware - 1.3% 49,000 Hewlett-Packard Co. $ 1,552,320 ------------ Total Technology Hardware & Equipment $ 4,919,653 ------------ Semiconductors - 0.4% 15,000 Intel Corp. $ 284,250 9,000 Texas Instruments, Inc. 272,610 ------------ $ 556,860 ------------ Total Semiconductors $ 556,860 ------------ Telecommunication Services - 0.3% Wireless Telecommunication Services - 0.3% 18,200 Vodafone Group Plc (A.D.R.) $ 387,660 ------------ Total Telecommunication Services $ 387,660 ------------ 20 The accompanying notes are an integral part of these financial statements. Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Shares Value TOTAL COMMON STOCKS (Cost $62,033,024) $75,014,680 ----------- RIGHTS/WARRANTS - 0.0% Technology Hardware & Equipment - 0.0% Communications Equipment - 0.0% 1,883 Lucent Technologies, Expires 12/10/07* $ 508 ----------- TOTAL RIGHTS/WARRANTS (Cost $2,194) $ 508 ----------- S&P/Moody's Principal Ratings Amount (unaudited) Value ASSET BACKED SECURITIES - 1.0% Transportation - 0.0% Airlines - 0.0% $ 11,770 BBB+/Baa3 Continental Airlines, 6.648%, 9/15/17 $ 11,704 ------------ Total Transportation $ 11,704 ------------ Diversified Financials - 0.6% Diversified Financial Services - 0.6% 210,107 BB-/Ba2 Caithness Coso Fund Corp., 6.263%, 6/15/14 (144A) $ 205,779 217,871 BBB-/Baa2 PF Export Receivable Master Trust, 6.436%, 6/1/15 (144A) 217,834 251,696 BBB/Baa2 Power Receivables Finance, 6.29%, 1/1/12 (144A) 250,732 ------------ $ 674,345 ------------ Specialized Finance - 0.0% 70,000 AAA/Aaa MBNA Credit Card Master Note, Floating Rate Note, 12/15/08 $ 69,990 ------------ Total Diversified Financials $ 744,335 ------------ Utilities - 0.4% Electric Utilities - 0.4% 272,580 BBB-/Baa3 FPL Energy America Wind LLC, 6.639%, 6/20/23 (144A) $ 278,623 158,400 BB-/Ba2 FPL Energy Wind Funding, 6.876%, 6/27/17 (144A) 158,202 ------------ $ 436,825 ------------ Total Utilities $ 436,825 ------------ TOTAL ASSET BACKED SECURITIES (Cost $1,199,073) $ 1,192,864 ------------ The accompanying notes are an integral part of these financial statements. 21 Pioneer Balanced Fund - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value COLLATERALIZED MORTGAGE OBLIGATIONS - 1.2% Diversified Financials - 0.1% Diversified Financial Services - 0.1% $ 60,000 NR/Ba1 Global Signal, 7.036%, 2/15/36 (144A) $ 59,918 ------------ Total Diversified Financials $ 59,918 ------------ Government - 1.1% 500,000 AAA/Aaa Fannie Mae, 6.0%, 6/25/16 $ 498,281 145,205 NR/NR Federal Home Loan Bank, 5.0%, 1/15/16 143,211 295,508 AAA/Aaa Federal Home Loan Mortgage Corp., 5.875%, 5/15/16 294,517 437,425 AAA/Aaa Freddie Mac, 6.1%, 9/15/18 435,832 ------------ $ 1,371,841 ------------ Total Government $ 1,371,841 ------------ TOTAL COLLATERALIZED MORTGAGE OBLIGATIONS (Cost $1,443,610) $ 1,431,759 ------------ CORPORATE BONDS - 9.7% Energy - 0.8% Integrated Oil & Gas - 0.1% 120,000 A-/A3 Occidental Petroleum, 6.75%, 1/15/12 $ 126,262 25,000 BBB/Baa2 Petro-Canada, 4.0%, 7/15/13 22,116 15,000 BBB+/Baa1 USX Corp., 6.85%, 3/1/08 15,275 ------------ $ 163,653 ------------ Oil & Gas Equipment & Services - 0.1% 1,000,000 NR/NR Sevan Marine, 9.0%, 3/31/08 $ 165,776 ------------ Oil & Gas Exploration & Production - 0.3% 300,000 BBB/NR Gazprom International SA, 7.201%, 2/1/20 (144A) $ 304,125 65,000 BBB/Baa1 Pemex Project Funding Master, 9.125%, 10/13/10 71,175 ------------ $ 375,300 ------------ Oil & Gas Refining & Marketing - 0.2% 65,000 BBB/Baa2 Boardwalk Pipelines LLC, 5.5%, 2/1/17 $ 61,315 100,000 BB-/Ba2 Semco Energy, Inc., 7.125%, 5/15/08 99,286 ------------ $ 160,601 ------------ Oil & Gas Storage & Transportation - 0.1% 40,000 BBB+/Baa1 Kinder Morgan Energy Partners, 6.75%, 3/15/11 $ 40,863 ------------ Total Energy $ 906,193 ------------ 22 The accompanying notes are an integral part of these financial statements. Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value Materials - 1.2% Aluminum - 0.1% $ 150,000 B/B1 Novelis, Inc., 7.25%, 2/15/15 $ 144,000 ------------ Commodity Chemicals - 0.2% 300,000 BB-/Ba2 Nova Chemicals, Ltd., 6.5%, 1/15/12 $ 276,000 ------------ Diversified Metals & Mining - 0.4% 425,000 BBB-/Baa3 Inco, Ltd., 7.2%, 9/15/32 $ 435,078 ------------ Fertilizers & Agricultural Chemicals - 0.0% 30,000 BBB+/Baa1 Potash Corp., Saskatchewan, 4.875%, 3/1/13 $ 28,217 ------------ Metal & Glass Containers - 0.1% 125,000 BBB/Baa2 Tenneco Packaging, 8.125%, 6/15/17 $ 137,972 ------------ Paper Products - 0.4% 150,000 B+/B1 Abitibi-Consolidated, Inc., 6.95%, 4/1/08 145,313 300,000 B-/B3 MDP Acquisition, 9.625%, 10/1/12 309,000 ------------ $ 454,313 ------------ Total Materials $ 1,475,580 ------------ Capital Goods - 0.6% Aerospace & Defense - 0.1% 25,000 A/A2 Boeing Co., 5.125%, 2/15/13 $ 24,119 80,000 A/A2 Honeywell International, 7.5%, 3/1/10 84,770 ------------ $ 108,889 ------------ Electrical Component & Equipment - 0.1% 85,000 NR/WD Orcal Geothermal, 6.21%, 12/30/20 (144A) $ 82,750 ------------ Industrial Conglomerates - 0.2% 145,000 AAA/Aaa General Electric Capital Corp., 6.125%, 2/22/11 $ 147,725 90,000 AAA/Aaa General Electric Capital Corp., 6.75%, 3/15/32 96,068 ------------ $ 243,793 ------------ Trading Companies & Distributors - 0.2% 300,000 BBB-/Baa3 Glencore Funding LLC, 6.0%, 4/15/14 (144A) $ 273,986 ------------ Total Capital Goods $ 709,418 ------------ Automobiles & Components - 0.4% Automobile Manufacturers - 0.4% 80,000 B+/Ba3 Ford Motor Co., 7.25%, 10/1/08 (b) $ 79,200 500,000 B-/Caa1 General Motors, 7.2%, 1/15/11 (b) 442,500 ------------ $ 521,700 ------------ Total Automobiles & Components $ 521,700 ------------ The accompanying notes are an integral part of these financial statements. 23 Pioneer Balanced Fund - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value Consumer Durables & Apparel - 0.2% Home Furnishings - 0.1% $ 95,000 BBB-/Baa3 Mohawk Industries, Inc., 6.125%, 1/15/16 $ 91,585 ------------ Total Consumer Durables & Apparel $ 91,585 ------------ Consumer Services - 0.1% Hotels, Resorts & Cruise Lines - 0.2% 100,000 BBB-/Ba1 Royal Caribbean Cruises, 7.25%, 6/15/16 $ 99,027 ------------ Total Consumer Services $ 99,027 ------------ Media - 1.3% Broadcasting & Cable TV - 0.9% 500,000 BBB+/Baa2 Comcast Cable Corp., 7.125%, 6/15/13 $ 523,766 80,000 BBB+/Baa2 Comcast Cable Corp., 5.3%, 1/15/14 75,267 300,000 BBB-/Baa3 Cox Communications, 7.125%, 10/1/12 310,297 150,000 BB+/Baa3 Cox Enterprises, 4.375%, 5/1/08 (144A) 145,181 ------------ $ 1,054,511 ------------ Publishing - 0.4% 512,000 BBB/Baa2 News America, Inc., 7.3%, 4/30/28 $ 519,196 ------------ Total Media $ 1,573,707 ------------ Retailing - 0.1% Department Stores - 0.0% 15,000 A/Baa1 Nordstrom, Inc., 5.625%, 1/15/09 $ 14,927 ------------ Specialty Stores - 0.1% 130,000 BBB-/Baa3 Tanger Factory Outlet Centers, Inc., 6.15%, 11/15/15 $ 126,303 ------------ Total Retailing $ 141,230 ------------ Food, Beverage & Tobacco - 0.1% Brewers - 0.0% 35,000 BBB+/Baa1 Miller Brewing Co., 5.5%, 8/15/13 (144A) $ 33,582 ------------ Packaged Foods & Meats - 0.1% 35,000 A+/A1 Unilever Capital Corp., 7.125%, 11/1/10 $ 36,748 ------------ Soft Drinks - 0.0% 35,000 A/A3 Bottling Group LLC, 5.0%, 11/15/13 $ 33,284 ------------ Total Food, Beverage & Tobacco $ 103,614 ------------ Health Care Equipment & Services - 0.4% Health Care Facilities - 0.4% 500,000 BB+/Ba2 HCA, Inc., 6.3%, 10/1/12 $ 470,261 ------------ Total Health Care Equipment & Services $ 470,261 ------------ 24 The accompanying notes are an integral part of these financial statements. Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value Banks - 0.5% Diversified Banks - 0.5% $ 80,000 AAA/Aaa International Bank for Reconstruction & Development, 4.375%, 9/28/06 $ 79,805 115,000 BB+/Baa2 Kazkommerts International BV, 8.0%, 11/3/15 111,550 150,000 AAA/Aaa KFW-Kredit Wiederaufbau, 2.75%, 5/8/07 146,524 225,000 AA-/Aa2 National Westminster, 7.375%, 10/1/09 238,246 30,000 AA-/Aa2 US Bancorp, 3.125%, 3/15/08 28,815 ------------ $ 604,940 ------------ Regional Banks - 0.0% 40,000 A-/A2 Keycorp, 2.75%, 2/27/07 $ 39,141 ------------ Total Banks $ 644,081 ------------ Diversified Financials - 0.6% Consumer Finance - 0.2% 265,000 A/A2 SLM Corp., Floating Rate Note, 7/25/14 $ 242,146 ------------ Investment Banking & Brokerage - 0.2% 200,000 B+/Ba2 E*Trade Financial Corp., 8.0%, 6/15/11 $ 204,000 ------------ Diversified Financial Services - 0.2% 300,000 A-/Baa3 Brascan Corp., 5.75%, 3/1/10 $ 298,126 ------------ Total Diversified Financials $ 744,272 ------------ Insurance - 1.1% Life & Health Insurance - 0.3% 300,000 BB+/Ba1 Provident Co., Inc., 7.0%, 7/15/18 $ 289,643 ------------ Multi-Line Insurance - 0.1% 150,000 A/Baa1 Loew Corp., 5.25%, 3/15/16 $ 138,793 ------------ Property & Casualty Insurance - 0.4% 180,000 BBB-/NR Kingsway America, Inc., 7.5%, 2/1/14 $ 178,233 350,000 BB+/Baa3 Ohio Casualty Corp., 7.3%, 6/15/14 353,995 ------------ $ 532,228 ------------ Reinsurance - 0.3% 300,000 BBB-/Baa3 Odyssey Re Holdings, 7.65%, 11/1/13 $ 288,243 100,000 BBB/NA Platinum Underwriters HD, 7.5%, 6/1/17 98,099 ------------ $ 386,342 ------------ Total Insurance $ 1,347,006 ------------ The accompanying notes are an integral part of these financial statements. 25 Pioneer Balanced Fund - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value Real Estate - 1.0% Real Estate Investment Trusts - 1.0% $ 300,000 BBB-/Baa3 Colonial Reality LP, 6.15%, 4/15/13 $ 295,610 300,000 BBB-/Baa3 Health Care REIT, Inc., 6.2%, 6/1/16 291,435 316,000 BB/Ba2 Host Marriott LP, 6.375%, 3/15/15 297,040 250,000 B+/B1 Trustreet Properties, Inc., 7.5%, 4/1/15 246,250 100,000 BB+/Ba2 Ventas Realty Capital Corp., 7.125%, 6/1/15 (144A) 100,000 ------------ $ 1,230,335 ------------ Total Real Estate $ 1,230,335 ------------ Technology Hardware & Equipment - 0.4% Computer Hardware - 0.4% 500,000 BBB-/Baa3 NCR Corp., 7.125%, 6/15/09 $ 510,414 ------------ Total Technology Hardware & Equipment $ 510,414 ------------ Semiconductors - 0.2% 250,000 BBB-/Baa3 Chartered Semiconductor, 6.375%, 8/3/15 $ 238,665 ------------ Total Semiconductors $ 238,665 ------------ Telecommunication Services - 0.5% Integrated Telecommunication Services - 0.4% 250,000 BBB+/Baa2 Telecom Italia Capital, 4.875%, 10/1/10 $ 239,054 300,000 BBB+/Baa2 Telecom Italia Capital, 5.25%, 11/15/13 277,340 ------------ $ 516,394 ------------ Wireless Telecommunication Services - 0.1% 90,000 BBB-/Baa3 Embarq Corp., 7.082%, 6/1/16 $ 89,506 ------------ Total Telecommunication Services $ 605,900 ------------ Utilities - 0.1% Electric Utilities - 0.1% 115,000 BBB+/Baa3 Entergy Gulf States, 5.7%, 6/1/15 $ 108,198 ------------ Total Utilities $ 108,198 ------------ TOTAL CORPORATE BONDS (Cost $11,752,816) $ 11,521,186 ------------ 26 The accompanying notes are an integral part of these financial statements. Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value TOTAL CORPORATE BONDS U.S. GOVERNMENT AND AGENCY OBLIGATIONS - 24.3% Government - 24.3% $ 100,000 AAA/Aaa Fannie Mae, 5.24%, 8/7/18 $ 94,863 65,000 AAA/Aaa Federal Home Loan Bank, 3.875%, 6/14/13 58,934 370,248 NR/Aaa Federal Home Loan Bank, 5.27%, 12/28/12 365,065 110,000 AAA/Aaa Federal Home Loan Bank, 6.0%, 4/15/32 111,173 300,000 AAA/Aaa Federal Home Loan Mortgage Corp., 3.25%, 2/25/08 289,235 772,329 AAA/Aaa Federal Home Loan Mortgage Corp., 4.5%, 12/1/20 729,165 860,097 AAA/Aaa Federal Home Loan Mortgage Corp., 5.0%, 11/1/34 805,827 826,990 AAA/Aaa Federal Home Loan Mortgage Corp., 5.0%, 4/1/34 774,810 241,188 NR/NR Federal Home Loan Mortgage Corp., 5.5%, 10/1/16 237,009 365,443 AAA/Aaa Federal Home Loan Mortgage Corp., 5.5%, 11/1/34 351,931 273,601 NR/NR Federal Home Loan Mortgage Corp., 5.5%, 12/1/18 269,472 907,785 AAA/Aaa Federal Home Loan Mortgage Corp., 5.5%, 12/1/34 874,220 478,279 AAA/Aaa Federal Home Loan Mortgage Corp., 5.5%, 12/1/35 459,681 184,687 NR/NR Federal Home Loan Mortgage Corp., 6.0%, 1/1/33 182,522 273,323 NR/NR Federal Home Loan Mortgage Corp., 6.0%, 4/1/33 270,120 330,594 AAA/Aaa Federal Home Loan Mortgage Corp., 6.0%, 5/1/33 326,491 156,800 AAA/Aaa Federal Home Loan Mortgage Corp., 6.0%, 6/1/34 154,696 157,990 AAA/Aaa Federal Home Loan Mortgage Corp., 6.5%, 10/1/33 159,951 19,891 NR/NR Federal Home Loan Mortgage Corp., 6.5%, 11/1/33 20,144 47,079 NR/NR Federal Home Loan Mortgage Corp., 6.5%, 5/1/09 47,347 304,815 AAA/Aaa Federal Home Loan Mortgage Corp., 6.5%, 5/1/32 307,506 104,861 AAA/Aaa Federal National Mortgage Association, 4.78%, 12/1/12 100,303 157,936 AAA/Aaa Federal National Mortgage Association, 5.0%, 12/1/17 152,456 121,464 AAA/Aaa Federal National Mortgage Association, 5.0%, 3/1/33 114,092 347,536 AAA/Aaa Federal National Mortgage Association, 5.0%, 5/1/18 335,464 391,356 AAA/Aaa Federal National Mortgage Association, 5.0%, 6/1/34 366,997 350,000 AAA/Aaa Federal National Mortgage Association, 5.2%, 11/8/10 344,106 344,182 AAA/Aaa Federal National Mortgage Association, 5.5%, 11/1/33 332,033 173,512 AAA/Aaa Federal National Mortgage Association, 5.5%, 12/1/34 167,101 409,523 NR/NR Federal National Mortgage Association, 5.5%, 2/1/17 402,676 81,204 AAA/Aaa Federal National Mortgage Association, 5.5%, 2/1/18 79,879 109,597 NR/NR Federal National Mortgage Association, 5.5%, 3/1/34 105,548 323,355 AAA/Aaa Federal National Mortgage Association, 5.5%, 4/1/34 311,408 48,105 AAA/Aaa Federal National Mortgage Association, 5.5%, 7/1/23 46,835 230,040 AAA/Aaa Federal National Mortgage Association, 5.5%, 8/1/14 226,731 52,955 AAA/Aaa Federal National Mortgage Association, 5.5%, 9/1/17 52,079 38,210 AAA/Aaa Federal National Mortgage Association, 6.0%, 1/1/29 37,795 10,888 AAA/Aaa Federal National Mortgage Association, 6.0%, 1/1/29 11,039 233,175 NR/NR Federal National Mortgage Association, 6.0%, 1/1/33 230,366 240,564 AAA/Aaa Federal National Mortgage Association, 6.0%, 12/1/33 237,511 259,439 NR/NR Federal National Mortgage Association, 6.0%, 2/1/33 256,147 The accompanying notes are an integral part of these financial statements. 27 Pioneer Balanced Fund - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value TOTAL CORPORATE BONDS $ 35,001 AAA/Aaa Federal National Mortgage Association, 6.0%, 3/1/33 $ 34,557 1,000,000 AAA/Aaa Federal National Mortgage Association, 6.0%, 7/1/36 984,062 43,780 AAA/Aaa Federal National Mortgage Association, 6.0%, 8/1/32 43,252 15,105 AAA/Aaa Federal National Mortgage Association, 6.0%, 9/1/29 14,940 1,260,000 AAA/Aaa Federal National Mortgage Association,6.125%, 3/15/12 1,298,144 35,425 NR/NR Federal National Mortgage Association, 6.5%, 10/1/32 35,738 124,003 NR/NR Federal National Mortgage Association, 6.5%, 4/1/29 125,896 46,823 AAA/Aaa Federal National Mortgage Association, 6.5%, 7/1/29 47,304 254,115 NR/NR Federal National Mortgage Association, 6.5%, 7/1/32 256,358 119,912 NR/NR Federal National Mortgage Association, 6.5%, 9/1/32 121,527 122,764 AAA/Aaa Federal National Mortgage Association, 6.5%, 12/1/21 124,243 13,767 AAA/Aaa Federal National Mortgage Association, 7.0%, 3/1/12 14,021 40,000 AAA/Aaa Federal National Mortgage Association,7.125%, 6/15/10 42,323 3,655 AAA/Aaa Federal National Mortgage Association, 8.0%, 1/1/31 3,857 5,069 AAA/Aaa Federal National Mortgage Association, 8.0%, 10/1/30 5,350 12,321 AAA/Aaa Federal National Mortgage Association, 8.0%, 2/1/29 13,021 1,822 AAA/Aaa Federal National Mortgage Association, 8.0%, 2/1/30 1,925 27,556 AAA/Aaa Federal National Mortgage Association, 8.0%, 3/1/31 29,115 6,028 AAA/Aaa Federal National Mortgage Association, 8.0%, 4/1/20 6,362 2,205 AAA/Aaa Federal National Mortgage Association, 8.0%, 4/1/30 2,328 2,316 AAA/Aaa Federal National Mortgage Association, 8.0%, 5/1/31 2,444 2,124 AAA/Aaa Federal National Mortgage Association, 8.0%, 7/1/30 2,241 47,027 AAA/Aaa Federal National Mortgage Association, 9.0%, 4/1/33 49,670 354,823 NR/NR Government National Mortgage Association II, 5.5%, 2/20/34 342,783 379,197 AAA/Aaa Government National Mortgage Association II, 6.0%, 10/20/33 377,014 114,149 AAA/Aaa Government National Mortgage Association, 4.5%, 1/15/35 104,830 176,729 AAA/Aaa Government National Mortgage Association, 4.5%, 4/15/35 162,301 399,285 AAA/Aaa Government National Mortgage Association, 5.0%, 10/15/34 377,970 283,371 AAA/Aaa Government National Mortgage Association, 5.0%, 4/15/34 268,507 192,460 AAA/Aaa Government National Mortgage Association, 5.5%, 10/15/33 186,782 238,669 AAA/Aaa Government National Mortgage Association, 5.5%, 12/15/34 231,539 457,877 AAA/Aaa Government National Mortgage Association, 5.5%, 8/15/17 452,800 28 The accompanying notes are an integral part of these financial statements. Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value TOTAL CORPORATE BONDS $ 378,939 AAA/Aaa Government National Mortgage Association, 5.5%, 8/15/19 $ 374,540 117,176 AAA/Aaa Government National Mortgage Association, 5.5%, 8/15/33 113,719 338,841 NR/NR Government National Mortgage Association, 5.5%, 8/15/33 328,845 93,621 AAA/Aaa Government National Mortgage Association, 5.5%, 9/15/33 90,916 424,619 AAA/Aaa Government National Mortgage Association, 5.50%, 8/15/33 412,092 204,160 NR/NR Government National Mortgage Association, 6.0%, 10/15/33 202,796 5,232 NR/NR Government National Mortgage Association, 6.0%, 4/15/14 5,269 17,711 AAA/Aaa Government National Mortgage Association, 6.0%, 8/15/13 17,808 762,192 AAA/Aaa Government National Mortgage Association, 6.0%, 8/15/34 756,913 832,221 AAA/Aaa Government National Mortgage Association, 6.0%, 9/15/33 826,660 261,693 AAA/Aaa Government National Mortgage Association, 6.0%, 9/15/34 259,881 385,759 AAA/Aaa Government National Mortgage Association, 6.0%, 12/15/33 383,182 190,571 NR/NR Government National Mortgage Association, 6.5%, 10/15/28 193,517 88,320 NR/NR Government National Mortgage Association, 6.5%, 5/15/33 89,472 10,751 AAA/Aaa Government National Mortgage Association, 7.0%, 4/15/28 11,092 3,283 NR/NR Government National Mortgage Association, 7.0%, 8/15/28 3,387 7,208 NR/NR Government National Mortgage Association, 7.5%, 1/15/30 7,536 4,449 NR/NR Government National Mortgage Association, 7.75%, 11/15/29 4,693 29,527 NR/NR Government National Mortgage Association, 8.0%, 2/15/30 31,348 200,000 AAA/Aaa U.S. Treasury Bonds, 4.0%, 2/15/14 185,797 720,000 AAA/Aaa U.S. Treasury Bonds, 5.25%, 11/15/28 716,625 200,000 AAA/Aaa U.S. Treasury Bonds, 6.25%, 8/15/23 220,578 100,000 AAA/Aaa U.S. Treasury Bonds, 7.125%, 2/15/23 119,641 The accompanying notes are an integral part of these financial statements. 29 Pioneer Balanced Fund - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value TOTAL CORPORATE BONDS $ 62,139 AAA/Aaa U.S. Treasury Inflation Notes, 1.875%, 7/15/15 $ 58,962 453,792 AAA/Aaa U.S. Treasury Inflation Protected Security, 3.375%, 1/15/12 475,347 173,613 AAA/Aaa U.S. Treasury Inflation Protected Security, 3.5%, 1/15/11 181,595 1,985,000 AAA/Aaa U.S. Treasury Notes, 4.0%, 11/15/12 1,865,745 800,000 AAA/Aaa U.S. Treasury Notes, 4.125%, 5/15/15 742,844 300,000 AAA/Aaa U.S. Treasury Notes, 4.25%, 11/15/14 282,141 400,000 AAA/Aaa U.S. Treasury Notes, 4.25%, 8/15/15 374,266 700,000 AAA/Aaa U.S. Treasury Notes, 4.75%, 11/15/08 693,739 360,000 AAA/Aaa U.S. Treasury Notes, 5.375%, 2/15/31 366,216 95,000 AAA/Aaa U.S. Treasury Notes, 5.5%, 8/15/28 97,605 1,100,000 AAA/Aaa U.S. Treasury Notes, 5.625%, 5/15/08 1,108,680 500,000 AAA/Aaa U.S. Treasury Notes, 4.75%, 5/15/14 487,744 200,000 AAA/Aaa U.S. Treasury Strip, 0.0%, 11/15/15 123,202 ------------ $ 28,778,325 ------------ TOTAL U.S. GOVERNMENT AND AGENCY OBLIGATIONS (Cost $29,919,793) $ 28,778,325 ------------ Shares TEMPORARY CASH INVESTMENT - 3.6% Security Lending Collateral - 3.6% 4,186,236 Securities Lending Investment Fund, 5.16% $ 4,186,236 ------------ TOTAL TEMPORARY CASH INVESTMENT (Cost $4,186,236) $ 4,186,236 ------------ TOTAL INVESTMENT IN SECURITIES - 103.0% (Cost $110,536,744) $122,125,558 ------------ OTHER ASSETS AND LIABILITIES - (3.0)% $ (3,509,996) ------------ TOTAL NET ASSETS - 100.0% $118,615,562 ============ (A.D.R.) American Depositary Receipt * Non-income producing security N/R Not rated by either S&P or Moody's (144A) Security is exempt from registration under Rule 144A of the Securities Act of 1933. Such securities may be resold normally to qualified institutional buyers in a transaction exempt from registration At June 30, 2006, the value of these securities amounted to $2,110,712 or 1.8% of total net assets. (a) At June 30, 2006, the net unrealized gain on investments based on cost for federal income tax purposes of $110,568,116 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $ 15,375,743 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (3,818,301) ------------ Net unrealized gain $ 11,557,442 ============ 30 The accompanying notes are an integral part of these financial statements. Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- (b) At June 30, 2006, the following securities were out on loan: Principal Market Amount Security Value $ 14,751 Anheuser-Busch Companies, Inc. $ 672,498 9,603 Cintas Corp.* 381,815 16,236 Encana Corp. 854,663 79,000 Ford Motor Co., 7.25%, 10/1/08 79,626 495,000 General Motors, 7.2%, 1/15/11 454,410 12,692 Newmont Mining Corp. 671,788 31,300 Teva Pharmaceutical Industries, Ltd. 988,767 ---------- Total $4,103,567 ========== Purchases and sales of securities (excluding temporary cash investments) for the six months ended June 30, 2006 aggregated $8,157,032 and $17,716,686, respectively. The accompanying notes are an integral part of these financial statements. 31 Pioneer Balanced Fund - -------------------------------------------------------------------------------- STATEMENT OF ASSETS AND LIABILITIES 6/30/06 (unaudited) - -------------------------------------------------------------------------------- ASSETS: Investment in securities (including securities loaned of $4,103,567) (cost $110,536,744) $122,125,558 Cash 429,095 Receivables - Investment securities sold 1,174,401 Fund shares sold 21,535 Forward foreign currency portfolio hedge contracts, open net 5,556 Dividends, interest and foreign taxes withheld 434,246 Due from Pioneer Investment Management, Inc. 536 Other 19,427 ------------ Total assets $124,210,354 ------------ LIABILITIES: Payables - Investment securities purchased $ 982,156 Fund shares repurchased 324,124 Upon return of securities loaned 4,186,236 Due to affiliates 51,792 Accrued expenses 50,484 ------------ Total liabilities $ 5,594,792 ------------ NET ASSETS: Paid-in capital $110,220,206 Distributions in excess of net investment income (23,901) Accumulated net realized loss on investments and foreign currency transactions (3,175,042) Net unrealized gain on investments 11,588,814 Net unrealized gain on forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 5,485 ------------ Total net assets $118,615,562 ============ NET ASSET VALUE PER SHARE: (Unlimited number of shares authorized) Class A (based on $86,935,396/8,851,197 shares) $ 9.82 ============ Class B (based on $13,531,823/1,395,652 shares) $ 9.70 ============ Class C (based on $10,092,788/1,031,763 shares) $ 9.78 ============ Investor Class (based on $8,055,555/820,551 shares) $ 9.82 ============ MAXIMUM OFFERING PRICE: Class A ($9.82 [divided by] 95.5%) $ 10.28 ============ 32 The accompanying notes are an integral part of these financial statements. Pioneer Balanced Fund - -------------------------------------------------------------------------------- STATEMENT OF OPERATIONS (unaudited) - -------------------------------------------------------------------------------- For the Six Months Ended 6/30/06 INVESTMENT INCOME: Dividends (net of foreign taxes withheld of $563) $ 501,416 Interest 1,168,093 Income from securities loaned, net 5,453 ----------- Total investment income $ 1,674,962 ----------- EXPENSES: Management fees $ 409,643 Transfer agent fees and expenses Class A 138,351 Class B 36,370 Class C 19,050 Investor Class 17,032 Distribution fees Class A 109,730 Class B 73,572 Class C 58,198 Administrative reimbursements 12,345 Custodian fees 10,559 Professional fees 15,901 Printing expense 24,722 Fees and expenses of nonaffiliated trustees 4,257 Miscellaneous 12,920 ----------- Total expenses $ 942,650 Less management fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (3,075) ----------- Net expenses $ 939,575 ----------- Net investment income $ 735,387 ----------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS: Net realized gain (loss) on: Investments $ 2,132,702 Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies (191) $ 2,132,511 ----------- ----------- Change in net unrealized gain on: Investments $(2,830,447) Forward foreign currency contracts and other assets and liabilities denominated in foreign currencies 5,485 $(2,824,962) ----------- ----------- Net loss on investments and foreign currency transactions $ (692,451) ----------- Net increase in net assets resulting from operations $ 42,936 =========== The accompanying notes are an integral part of these financial statements. 33 Pioneer Balanced Fund - -------------------------------------------------------------------------------- STATEMENTS OF CHANGES IN NET ASSETS - -------------------------------------------------------------------------------- For the Six Months Ended 6/30/06 and the Year Ended 12/31/05 Six Months Ended Year 6/30/06 Ended (unaudited) 12/31/05 FROM OPERATIONS: Net investment income $ 735,387 $ 1,431,146 Net realized gain on investments and foreign currency transactions 2,132,511 4,998,446 Change in net unrealized loss on investments and foreign currency transactions (2,824,962) (2,249,215) ------------- ------------- Net increase in net assets resulting from operations $ 42,936 $ 4,180,377 ------------- ------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.07 and $0.14 per share, respectively) $ (629,082) $ (1,384,378) Class B ($0.03 and $0.06 per share, respectively) (43,193) (101,717) Class C ($0.03 and $0.07 per share, respectively) (33,179) (95,269) Investor Class ($0.09 and $0.17 per share, respectively) (76,125) (167,088) ------------- ------------- Total distributions to shareowners $ (781,579) $ (1,748,452) ------------- ------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 6,389,493 $ 13,360,430 Reinvestment of distributions 714,822 1,595,887 Cost of shares repurchased (17,970,814) (38,298,111) ------------- ------------- Net decrease in net assets resulting from Fund share transactions $ (10,866,499) $ (23,341,794) ------------- ------------- Net decrease in net assets $ (11,605,142) $ (20,909,869) NET ASSETS: Beginning of period 130,220,704 151,130,573 ------------- ------------- End of period (including undistributed (distributions in excess of) net investment income of ($23,901) and $22,291 respectively) $ 118,615,562 $ 130,220,704 ============= ============= 34 The accompanying notes are an integral part of these financial statements. Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- '06 Shares '06 Amount '05 Shares '05 Amounts (unaudited) (unaudited) CLASS A Shares sold 423,777 $ 4,281,184 801,871 $ 7,780,552 Reinvestment of distributions 58,105 574,161 129,132 1,260,024 Less shares repurchased (1,001,540) (10,049,384) (1,946,433) (18,968,004) ---------- ------------- ---------- ------------- Net decrease (519,658) $ (5,194,039) (1,015,430) $ (9,927,428) ========== ============= ========== ============= CLASS B Shares sold 125,503 $ 1,245,244 358,655 $ 3,442,850 Reinvestment of distributions 3,791 36,888 9,121 88,008 Less shares repurchased (378,142) (3,764,385) (635,188) (6,084,346) ---------- ------------- ---------- ------------- Net decrease (248,848) $ (2,482,253) (267,412) $ (2,553,488) ========== ============= ========== ============= CLASS C Shares sold 85,849 $ 857,144 219,863 $ 2,130,962 Reinvestment of distributions 3,142 30,831 9,043 87,662 Less shares repurchased (316,860) (3,161,265) (386,809) (3,755,990) ---------- ------------- ---------- ------------- Net decrease (227,869) $ (2,273,290) (157,903) $ (1,537,366) ========== ============= ========== ============= INVESTOR CLASS Shares sold 591 $ 5,921 612 $ 6,066 Reinvestment of distributions 7,373 72,942 16,430 160,193 Less shares repurchased (98,659) (995,780) (969,565) (9,489,771) ---------- ------------- ---------- ------------- Net decrease (90,695) $ (916,917) (952,523) $ (9,323,512) ========== ============= ========== ============= The accompanying notes are an integral part of these financial statements. 35 Pioneer Balanced Fund - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Six Months Ended 6/30/06 Year Ended (unaudited) 12/31/05 CLASS A Net asset value, beginning of period $ 9.89 $ 9.72 ------- ------- Increase (decrease) from investment operations: Net investment income $ 0.07 $ 0.11 Net realized and unrealized gain (loss) on investments (0.07) 0.20 ------- ------- Net increase (decrease) from investment operations $ - $ 0.31 Distributions to shareowners: Net investment income (0.07) (0.14) ------- ------- Net increase (decrease) in net asset value $ (0.07) $ 0.17 ------- ------- Net asset value, end of period $ 9.82 $ 9.89 ======= ======= Total return* 0.00% 3.25% Ratio of net expenses to average net assets+ 1.32%** 1.35% Ratio of net investment income to average net assets+ 1.34%** 1.21% Portfolio turnover rate 13%** 26% Net assets, end of period (in thousands) $86,935 $92,715 Ratios with reductions for fees paid indirectly: Net expenses 1.32%** 1.35% Net investment income 1.34%** 1.21% Year Ended Year Ended Year Ended Year Ended 12/31/04 12/31/03 12/31/02 12/31/01 (a) CLASS A Net asset value, beginning of period $ 9.47 $ 8.29 $ 9.46 $ 9.94 -------- -------- -------- -------- Increase (decrease) from investment operations: Net investment income $ 0.14 $ 0.12 $ 0.11 $ 0.19 Net realized and unrealized gain (loss) on investments 0.27 1.20 (1.17) (0.47) -------- -------- -------- -------- Net increase (decrease) from investment operations $ 0.41 $ 1.32 $ (1.06) $ (0.28) Distributions to shareowners: Net investment income (0.17) (0.14) (0.11) (0.20) -------- -------- -------- -------- Net increase (decrease) in net asset value $ 0.25 $ 1.18 $ (1.17) $ (0.48) -------- -------- -------- -------- Net asset value, end of period $ 9.71 $ 9.47 $ 8.29 $ 9.46 ======== ======== ======== ======== Total return* 4.43% 15.99% (11.20)% (2.87)% Ratio of net expenses to average net assets+ 1.29% 1.38% 1.41% 1.31% Ratio of net investment income to average net assets+ 1.51% 1.25% 1.19% 1.97% Portfolio turnover rate 31% 44% 180% 133% Net assets, end of period (in thousands) $100,920 $107,265 $106,734 $141,746 Ratios with reductions for fees paid indirectly: Net expenses 1.29% 1.38% 1.41% 1.30% Net investment income 1.51% 1.25% 1.19% 1.98% * 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. + Ratio with no reduction for fees paid indirectly. (a) At January 1, 2001, the Fund began accreting discounts and amortizing premiums on debt securities. The effect of this change for the year ended December 31, 2001, was to decrease net investment income by less than one cent per share, increase net realized and unrealized gain (loss) by less than one cent per share and decrease the ratio of net investment income to average net assets assuming reduction for fees paid indirectly from 2.02% to 1.98%. Per share ratios and supplemental data for periods prior to January 1, 2001, have not been restated to reflect this change in presentation. The accompanying notes are an integral part of these financial statements. 36 Pioneer Balanced Fund - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Six Months Ended 6/30/06 Year Ended (unaudited) 12/31/05 CLASS B Net asset value, beginning of period $ 9.77 $ 9.61 ------- ------- Increase (decrease) from investment operations: Net investment income $ 0.02 $ 0.02 Net realized and unrealized gain (loss) on investments (0.06) 0.20 ------- ------- Net increase (decrease) from investment operations $ (0.04) $ 0.22 Distributions to shareowners: Net investment income (0.03) (0.06) ------- ------- Net increase (decrease) in net asset value $ (0.07) $ 0.16 ------- ------- Net asset value, end of period $ 9.70 $ 9.77 ======= ======= Total return* (0.41)% 2.29% Ratio of net expenses to average net assets+ 2.27%** 2.30% Ratio of net investment income to average net assets+ 0.38%** 0.26% Portfolio turnover rate 13%** 26% Net assets, end of period (in thousands) $13,532 $16,074 Ratios with reduction for fees paid indirectly: Net expenses 2.27%** 2.30% Net investment income 0.38%** 0.26% Year Ended Year Ended Year Ended Year Ended 12/31/04 12/31/03 12/31/02 12/31/01 (a) CLASS B Net asset value, beginning of period $ 9.37 $ 8.21 $ 9.36 $ 9.85 ------- ------- --------- ------- Increase (decrease) from investment operations: Net investment income $ 0.05 $ 0.03 $ 0.02 $ 0.12 Net realized and unrealized gain (loss) on investments 0.27 1.18 (1.13) (0.48) ------- ------- --------- ------- Net increase (decrease) from investment operations $ 0.32 $ 1.21 $ (1.11) $ (0.36) Distributions to shareowners: Net investment income (0.08) (0.05) (0.04) (0.13) ------- ------- --------- ------- Net increase (decrease) in net asset value $ 0.24 $ 1.16 $ (1.15) $ (0.49) ------- ------- --------- ------- Net asset value, end of period $ 9.61 $ 9.37 $ 8.21 $ 9.36 ======= ======= ========= ======= Total return* 3.48% 14.71% (11.90)% (3.72)% Ratio of net expenses to average net assets+ 2.24% 2.35% 2.32% 2.20% Ratio of net investment income to average net assets+ 0.59% 0.27% 0.28% 1.04% Portfolio turnover rate 31% 44% 180% 133% Net assets, end of period (in thousands) $18,369 $16,168 $ 16,256 $18,110 Ratios with reduction for fees paid indirectly: Net expenses 2.24% 2.35% 2.32% 2.19% Net investment income 0.59% 0.27% 0.28% 1.05% * 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. + Ratio with no reduction for fees paid indirectly. (a) At January 1, 2001, the Fund began accreting discounts and amortizing premiums on debt securities. The effect of this change for the year ended December 31, 2001, was to decrease net investment income by less than one cent per share, increase net realized and unrealized gain (loss) by less than one cent per share and decrease the ratio of net investment income to average net assets assuming reduction for fees paid indirectly from 1.08% to 1.05%. Per share ratios and supplemental data for periods prior to January 1, 2001, have not been restated to reflect this change in presentation. The accompanying notes are an integral part of these financial statements. 37 Pioneer Balanced Fund - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Six Months Ended 6/30/06 Year Ended (unaudited) 12/31/05 CLASS C Net asset value, beginning of period $ 9.85 $ 9.68 ------- ------- Increase (decrease) from investment operations: Net investment income $ 0.03 $ 0.04 Net realized and unrealized gain (loss) on investments (0.07) 0.20 ------- ------- Net increase (decrease) from investment operations $ (0.04) $ 0.24 Distributions to shareowners: Net investment income (0.03) (0.07) ------- ------- Net increase (decrease) in net asset value $ (0.07) $ 0.17 ------- ------- Net asset value, end of period $ 9.78 $ 9.85 ======= ======= Total return* (0.41)% 2.51% Ratio of net expenses to average net assets+ 2.10%** 2.12% Ratio of net investment income to average net assets+ 0.55%** 0.44% Portfolio turnover rate 13%** 26% Net assets, end of period (in thousands) $10,093 $12,411 Ratios with reduction for fees paid indirectly: Net expenses 2.10%** 2.12% Net investment income 0.55%** 0.44% Year Ended Year Ended Year Ended Year Ended 12/31/04 12/31/03 12/31/02 12/31/01 (a) CLASS C Net asset value, beginning of period $ 9.45 $ 8.27 $ 9.44 $ 9.94 ------- ------- --------- ------- Increase (decrease) from investment operations: Net investment income $ 0.06 $ 0.02 $ 0.01 $ 0.13 Net realized and unrealized gain (loss) on investments 0.26 1.20 (1.14) (0.54) ------- ------- --------- ------- Net increase (decrease) from investment operations $ 0.32 $ 1.22 $ (1.13) $ (0.41) Distributions to shareowners: Net investment income (0.09) (0.04) (0.04) (0.09) ------- ------- --------- ------- Net increase (decrease) in net asset value $ 0.23 $ 1.18 $ (1.17) $ (0.50) ------- ------- --------- ------- Net asset value, end of period $ 9.68 $ 9.45 $ 8.27 $ 9.44 ======= ======= ========= ======= Total return* 3.42% 14.82% (12.02)% (4.11)% Ratio of net expenses to average net assets+ 2.18% 2.38% 2.53% 2.44% Ratio of net investment income to average net assets+ 0.73% 0.24% 0.06% 0.75% Portfolio turnover rate 31% 44% 180% 133% Net assets, end of period (in thousands) $13,720 $ 8,416 $ 7,806 $ 5,499 Ratios with reduction for fees paid indirectly: Net expenses 2.18% 2.38% 2.53% 2.43% Net investment income 0.73% 0.24% 0.06% 0.76% * 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. + Ratio with no reduction for fees paid indirectly. (a) At January 1, 2001, the Fund began accreting discounts and amortizing premiums on debt securities. The effect of this change for the year ended December 31, 2001, was to decrease net investment income by less than one cent per share, increase net realized and unrealized gain (loss) by less than one cent per share and decrease the ratio of net investment income to average net assets assuming reduction for fees paid indirectly from 0.86% to 0.76%. Per share ratios and supplemental data for periods prior to January 1, 2001, have not been restated to reflect this change in presentation. The accompanying notes are an integral part of these financial statements. 38 Pioneer Balanced Fund - -------------------------------------------------------------------------------- FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- Six Months Ended 12/11/04 (a) 6/30/06 Year Ended to (unaudited) 12/31/05 12/31/04 INVESTOR CLASS Net asset value, beginning of period $ 9.90 $ 9.72 $ 9.66 ------- ------- ------- Increase from investment operations: Net investment income $ 0.08 $ 0.18 $ 0.01 Net realized and unrealized gain (loss) on investments (0.07) 0.17 0.05 ------- ------- ------- Net increase from investment operations $ 0.01 $ 0.35 $ 0.06 Distributions to shareowners: Net investment income (0.09) (0.17) - ------- ------- ------- Net increase (decrease) in net asset value $ (0.08) $ 0.18 $ 0.06 ------- ------- ------- Net asset value, end of period $ 9.82 $ 9.90 $ 9.72 ======= ======= ======= Total return* 0.10% 3.62% 0.62%(b) Ratio of net expenses to average net assets+ 1.10%** 1.11% 1.06%** Ratio of net investment income to average net assets+ 1.56%** 1.49% 1.06%** Portfolio turnover rate 13%** 26% 31% Net assets, end of period (in thousands) $ 8,056 $ 9,020 $18,121 Ratios with no assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.17%** 1.14% 1.06%** Net investment income 1.49%** 1.45% 1.06%** Ratios with assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.10%** 1.10% 1.06%** Net investment income 1.56%** 1.49% 1.06%** * 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. ** Annualized. + Ratio with no reduction for fees paid indirectly. (a) Investor class shares commenced operations on December 11, 2004. (b) Not Annualized The accompanying notes are an integral part of these financial statements. 39 Pioneer Balanced Fund - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 6/30/06 (unaudited) - -------------------------------------------------------------------------------- 1. Organization and Significant Accounting Policies Pioneer Balanced Fund (the Fund) is a Delaware statutory trust registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. The Fund's investment objective is to seek capital growth and current income by actively managing investments in a diversified portfolio of equity securities and bonds. The Trustees have authorized the issuance of four classes of shares of the Fund. The Fund offers four Classes of shares designated as - Class A, Class B, Class C and Investor Class shares. Investor Class shares were first issued December 10, 2004. The Fund is not offering additional Investor Class shares except in connection with the reinvestment of dividends on the Fund's outstanding Investor Class shares. Each class of shares represents an interest in the same portfolio of investments of the Fund and have equal rights to voting, redemptions, dividends and liquidation, except that each class of shares can bear different transfer agent and distribution fees and has 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 Investor Class shares. The Fund's financial statements have been prepared in conformity 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, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses and gain and losses on investments during the reporting year. Actual results could differ from those estimates. The following is a summary of significant accounting policies followed by the Fund in the 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 trade date. The net asset value of the Fund 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, debt securities are valued at prices supplied by independent pricing services, 40 Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- which consider such factors as Treasury spreads, yields, maturities and ratings. Valuations may be supplemented by dealers and other sources, as required. Equity securities are valued at the last sale price on the principal exchange where they are traded. Securities that have not traded on the date of valuation, or securities for which sale prices are not generally reported, are valued at the mean between the last bid and asked prices. Securities for which market quotations are not readily available are valued at their fair values as determined by, or under the direction of, the Board of Trustees. Trading in foreign securities is substantially completed each day at various times prior to the close of the NYSE. The values of such securities used in computing the net asset value of the Fund's shares are determined as of such times. The Fund also may use the fair value of a security including a non-U.S. security when the closing market price on the principal exchange where the security is traded no longer reflects the value of the security. At June 30, 2006 there were no securities fair valued. Temporary cash investments are valued at amortized cost. Dividend income is recorded on the ex-dividend date except that certain dividends from foreign securities where the ex dividend date may have passed are recorded as soon as the Fund becomes aware of the ex-dividend data in exercise of reasonable diligence. Interest income is recorded on the accrual basis. All discounts/premiums on debt securities are accreted/amortized into interest income for financial reporting purposes. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. The Fund invests in REIT securities, the value of which can fall for a variety of reasons, such as declines in rental income, fluctuating interest rates, poor property management, environmental liabilities, uninsured damage, increased competition, or changes in real estate tax laws. The Fund may invest in mortgage-backed securities, which during times of fluctuating interest rates may increase of decrease more than other fixed-income securities. Mortgage backed securities are also subject to pre-payments. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other 41 Pioneer Balanced Fund - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- risks affecting those industries and sectors. Information regarding the Fund's principal risk is contained in the Fund's prospectus. Please refer to those documents when considering the Fund's risks. B. Futures Contracts The Fund may enter into futures transactions to hedge against changes in interest rates, securities prices, and currency rates or to seek to increase total return. Upon entering into a futures contract, the Fund is required to deposit with a broker an amount of cash or securities equal to the minimum "initial margin" requirements of the associated futures exchange. Subsequent payments on futures contracts ("variation margin") are paid or received by the Fund, depending on the daily fluctuation in the value of the contracts, and are recorded by the Fund as unrealized gains or losses. When the contract is closed, the Fund realizes a gain or loss equal to the difference between the opening and closing value of the contract. The use of futures contracts involves, to varying degrees, elements of market risk which may exceed the amounts recognized by the Fund. Changes in the value of the contracts may not directly correlate to the changes in the value of the underlying securities. These risks may decrease the effectiveness of the Fund's hedging and trading strategies and potentially result in a loss. As of June 30, 2006, the Fund had no open futures contracts. C. Forward Foreign Currency Contracts The Fund enters into forward foreign currency contracts (contracts) for the purchase or sale of a specific foreign currency at a fixed price on a future date as a hedge or cross-hedge against either specific investment transactions (settlement hedges) or portfolio positions (portfolio hedges). All contracts are marked to market daily at the applicable exchange rates, and any resulting unrealized gains or losses are recorded in the Fund's financial statements. The Fund records realized gains and losses at the time a portfolio hedge is offset by entry into a closing transaction or extinguished by delivery of the currency. Risks may arise upon entering into these contracts from the potential inability of counterparties to meet the terms of the contract and from unanticipated movements in the value of foreign currencies relative to the U.S. dollar (see Note 7). 42 Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- D. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal income tax provision is required. The amounts and characterizations of distributions to shareowners for financial reporting purposes are determined in accordance with federal income tax rules. Therefore, the sources of the Fund's distributions may be shown in the accompanying financial statements as either from or in excess of net investment income or net realized gain on investment transactions, or from paid-in capital, depending on the type of book/tax differences that may exist. The tax character of current year distributions paid will be determined at the end of the current fiscal year. The tax character of distributions paid during the year ended December 31, 2005 and was as follows: - -------------------------------------------------------------------- 2005 - -------------------------------------------------------------------- Distributions paid from: Ordinary income $1,748,452 Long-term capital gain - ---------- Total $1,748,452 ========== - -------------------------------------------------------------------- The following shows the components of distributable earnings on a federal income tax basis at December 31, 2005. - -------------------------------------------------------------------- 2005 - -------------------------------------------------------------------- Undistributed ordinary income $ 31,314 Capital loss carryforward (5,285,204) Unrealized appreciation 14,387,889 ---------- Total $9,133,999 ========== - -------------------------------------------------------------------- The difference between book-basis and tax-basis unrealized appreciation is attributable to the tax deferral of losses on wash sales and the tax treatment of premium and amortization. 43 Pioneer Balanced Fund - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- E. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly owned subsidiary of UniCredito Italiano S.p.A. (UniCredito Italiano), earned $7,919 in underwriting commissions on the sale of Class A shares during the six months ended June 30, 2006. F. 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 the Fund, respectively (see Note 4). Investor Class shares are not subject to a distribution plan. 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 the Fund 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, Class C and Investor Class shares can bear different transfer agent and distribution fees. G. Repurchase Agreements With respect to repurchase agreements entered into by the Fund, 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 purchase. The collateral for all repurchase agreements is held in safekeeping in the customer-only account of the Fund's custodian, or subcustodians. The Fund's investment adviser, Pioneer Investment Management, Inc. (PIM), is responsible for determining that the value of the collateral remains at least equal to the repurchase price. 44 Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- H. Security Lending The Fund lends securities in its portfolio to certain broker-dealers or other institutional investors, with the Fund's custodian acting as the lending agent. When entering into a loan, the Fund receives collateral, which is maintained by the custodian and earns income in the form of negotiated lenders' fees. The Fund also continues to receive interest or payments in lieu of dividends on the securities loaned. Gain or loss in the fair value of the loaned securities that may occur during the term of the loan will be for the account of the Fund. The loans are secured by collateral of at least 102%, at all times, of the fair value of the securities loaned. The amount of the collateral will be adjusted daily to reflect any price fluctuation in the value of the loaned securities. The Fund has the right under the lending agreements to recover the securities from the borrower on demand. The Fund invests cash collateral in interest bearing bank deposits. 2. Management Agreement PIM, a wholly owned indirect subsidiary of UniCredito Italiano, manages the Fund's portfolio. Management fees are calculated daily at the annual rate of 0.65% of the Fund's average daily net assets up to $1 billion; 0.60% of the next $4 billion; and 0.55% of the excess over $5 billion. Through December 10, 2006, PIM has agreed not to impose all or a portion of its management fee and to assume other operating expenses (excluding taxes, commissions, interest and extraordinary expenses) of the Fund to the extent necessary to limit Investor Class expenses to 1.10% of the average daily net assets attributable to Investor Class shares. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund. At June 30, 2006, $2,974 was payable to PIM related to management fees, administrative costs and certain other services, and is included in due to affiliates. 45 Pioneer Balanced Fund - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- 3. Transfer Agent PIMSS, a wholly owned subsidiary of UniCredito Italiano, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. Included in due to affiliates is $47,597 in transfer agent fees payable to PIMSS at June 30, 2006. 4. Distribution Plans The Fund adopted a Plan of Distribution for each class of shares (Class A Plan, Class B Plan and Class C Plan) in accordance with Rule 12b-1 of the Investment Company Act of 1940. Pursuant to the Class A Plan, the Fund pays PFD a service fee of up to 0.25% of the 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 Fund pays 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. Included in due to affiliates is $1,221 in distribution fees payable to PFD at June 30, 2006. In addition, redemptions of each class of shares (except Investor Class 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 subscribed on or after December 1, 2004 that are redeemed within five years of purchase are subject to a CDSC at declining rates beginning at 4.00%, based on the lower of cost or market value of shares being redeemed. Shares purchased prior to December 1, 2004 remain subject to the CDSC in effect at the time those shares were purchased. Redemptions of Class C shares within one year of purchase are subject to a CDSC of 1.00%. Proceeds from the CDSCs are paid to PFD. For the six months ended June 30, 2006, CDSCs in the amount of $18,708 were paid to PFD. 5. Expense Offset Arrangements The Fund has entered into certain expense offset arrangements with PIMSS resulting in a reduction in the Fund's total expenses due to interest earned on cash held by PIMSS. For the six months 46 Pioneer Balanced Fund - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- ended June 30, 2006, the Fund's expenses were not reduced under such arrangements. 6. Line of Credit Facility The Fund, along with certain others in the Pioneer Family of Funds (the Funds), collectively participate in a $50 million committed, unsecured revolving line of credit facility. Borrowings are used solely for temporary or emergency purposes. The Fund may borrow up to the lesser of $50 million or the limits set by its prospectus for borrowings. Interest on collective borrowings is payable at the Federal Funds Rate plus 1/2% on an annualized basis. The Funds pay an annual commitment fee for this facility. The commitment fee is allocated among such Funds based on their respective borrowing limits. For the six months ended June 30, 2006, the Fund had no borrowings under this agreement. 7. Forward Foreign Currency Contracts During the six months ended June 30, 2006, the Fund had entered into various contracts that obligate the Fund to deliver currencies at specified future dates. At the maturity of a contract, the Fund must make delivery of the foreign currency. Alternatively, prior to the settlement date of a portfolio hedge, the Fund may close out such contracts by entering into an offsetting hedge contract. At June 30, 2006, the Fund had no outstanding settlement hedges. The Fund's gross forward currency portfolio contracts receivable and payable as of June 30, 2006 were $176,226 and $170,670, respectively, resulting in a net receivable of $5,556. 8. Merger Information On December 8, 2004, beneficial owners of Safeco Balanced Fund (one of the series that comprised Safeco Common Stock Trust) approved a proposed Agreement and Plan of Reorganization that provided for the merger listed below. This tax-free reorganization was accomplished on December 10, 2004, by exchanging all of Safeco's net assets for Investor Class shares, based on the Fund's Class A shares' ending net asset value. The following charts show the details of the reorganizations as of that closing date ("Closing Date"): 47 Pioneer Balanced Fund - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 6/30/06 (unaudited) (continued) - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------- Pioneer Safeco Pioneer Balanced Fund Balanced Fund Balanced Fund (Pre-Reorganization ) (Pre-Reorganization) (Post-Reorganization) - -------------------------------------------------------------------------------------------------- Net Assets $131,213,704 $18,324,440 $149,538,144 Shares Outstanding 13,574,726 1,479,627 15,471,658 Investor Shares Issued 1,896,932 - -------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------- Unrealized Accumulated Appreciation/ Loss on on Closing Date Closing Date - -------------------------------------------------------------------------------------------------- Safeco Balanced Fund $2,484,884 $(483,521) - -------------------------------------------------------------------------------------------------- ADDITIONAL INFORMATION (unaudited) For the fiscal year ended December 31, 2005, the percentage of the ordinary income distributions made by the Fund subject to a maximum tax rate of 15%, as provided for by the Jobs and Growth Tax Relief Act of 2003, was 61.37%. The qualifying percentage of the Fund's ordinary income dividends for the purposes of the corporate dividends received deduction was 57.58%. 48 Pioneer Balanced Fund - -------------------------------------------------------------------------------- TRUSTEES, OFFICERS AND SERVICE PROVIDERS - -------------------------------------------------------------------------------- Trustees Officers John F. Cogan, Jr., Chairman John F. Cogan, Jr., President David R. Bock Osbert M. Hood, Executive Mary K. Bush Vice President Margaret B.W. Graham Vincent Nave, Treasurer Osbert M. Hood Dorothy E. Bourassa, Secretary Thomas J. Perna Marguerite A. Piret Stephen K. West John Winthrop Investment Adviser Pioneer Investment Management, Inc. Custodian Brown Brothers Harriman & Co. Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Wilmer Cutler Pickering Hale and Dorr LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll-free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at www.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at http://www.sec.gov. 49 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 50 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 51 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- This page for your notes. 52 - -------------------------------------------------------------------------------- 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, Inc. 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 web site: www.pioneerinvestments.com Before investing consider the Fund's investment objectives, risks, charges and expenses. Contact your advisor or Pioneer Investments for a prospectus containing this information. Read it carefully. 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 http://www.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. N/A (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. N/A (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. N/A (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. N/A (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. N/A (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. N/A (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 independent auditor, Ernst & Young LLP ("E&Y"), has advised the Audit Committee of the Fund's Board of Trustees that E&Ys Spanish affiliate (E&Y Spain) performed certain non-audit work for Pioneer Global Investments Limited ("PGIL"), an affiliate of the Funds investment adviser. The services involved the receipt and disbursement of monies transferred to E&Y Spain by PGIL in payment of individual payroll and related income tax withholdings due on returns prepared by E&Y Spain for certain PGIL employees located in Spain from February 2001 to October 2005. E&Y became auditors of the Fund in May 2002. These payroll and tax services were discontinued in November 2005. The annual fee received by E&Y Spain for all such services totaled approximately 9,000 Euro per year. E&Y has informed the Audit Committee that based on its internal reviews and the de minimus nature of the services provided and fees received, E&Y does not believe its independence with respect to the Fund has been impaired or that it is disqualified from acting as independent auditors to the Fund. N/A 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 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. 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 Balanced Fund By (Signature and Title)* /s/ John F. Cogan, Jr. John F. Cogan, Jr, President Date August 31, 2006 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 August 31, 2006 By (Signature and Title)* /s/ Vincent Nave Vincent Nave, Treasurer Date August 31, 2006 * Print the name and title of each signing officer under his or her signature.