^ YTD returns are total returns. For the Global Equity Fund and the Total Return Bond Fund, the since inception returns are total returns.
* For the first calendar year, returns are total returns since the fund's share class inception through calendar year-end.

Performance data quoted represents past performance, which is no guarantee of future results. Current performance may be lower or higher than the performance quoted. The principal value and investment return of an investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost.

Average annual total return measures net investment income and capital gain or loss from portfolio investments as an annualized average assuming reinvestment of dividends and capital gains distributions. Daily performance returns are not adjusted for the 4.75% front-end sales charge, which would reduce the performance quoted. Where indicated, quarterly returns are adjusted for the maximum front-end sales load of 4.75% for Class A shares (3.75% for Total Return Bond Fund Class A Shares). Class B shares have a declining contingent deferred sales charge over six years, with a maximum of 5% in year one (3.50% for Total Return Bond Fund Class B shares). Class B shares automatically convert to A shares after eight years. There is a 1% contingent deferred sales charge for C shares on certain redemptions within the first year of purchase. Class B and C shares have been adjusted for the contingent deferred sales charge (CDSC). Class I shares are also available for institutional investors. The funds' gross expense ratios as published in the latest prospectuses are as follows: Growth A 1.22%, B 1.97%, C 1.97%, I 0.97%, R 1.47%; Growth and Income A 1.07%, B 1.82%, C 1.82%, I 0.82%, R 1.32%; Value A 1.49%, B 2.24%, C 2.24%, I 1.24%, R 1.74%; Blue Chip A 1.46%, B 2.21%, C 2.21%, I 1.21%, R 1.71%; Multi-Fund Blend A 1.86, B 2.61%, C 2.61%, I 1.61%, R 2.11%; 130/30 Equity A 3.01%, B 3.76%, C 3.76%, I 2.76%, R 3.26%; Global Growth and Income A 1.36%, B 2.11%, C 2.11%, I 1.11%, R 1.61%; International Growth A 1.48%, B 2.23%, C 2.23%, I 1.23%, R 1.73%; Global Equity A 1.82% , B 2.57%, C 2.57%, I 1.57%, R 2.07%; Evolving World Growth A 3.10%, B 3.85%, C 3.85%, I 2.85%, R 3.35%; Convertible A 1.15%, B 1.90%, C 1.90%, I 0.90%, R 1.40%; Market Neutral Income A 1.14%, B 1.89%, C 1.89%, I 0.89%, R 1.39%; High Yield A 1.21%, B 1.96%, C 1.96%, I 0.96%, R 1.46%; Total Return Bond A 1.20%, B 1.95%, C 1.95%, I 0.95%, R 1.45%; Government Money Market A 0.52%, B 1.27%, C 1.27%, I 0.27%. Calamos Advisors has contractually agreed to reimburse Government Money Market Fund expenses through June 30, 2010 to the extent necessary so that Total Annual Operating Expenses after any such reimbursement do not exceed 0.52% for Class A shares, 1.27% for Class B shares or Class C shares and 0.27% for Class I shares. After such date, the expense limitation may be terminated or revised. The gross expense ratios for all share classes of Calamos 130/30 Equity Fund and Calamos Evolving World Growth Fund are annualized. Besides the expenses of the underlying funds, Calamos Multi-Fund Blend will incur other expenses (currently capped at 0.25% until 6/30/10). Calamos Advisors also has contractually agreed (through 6/30/10) to limit annual expenses for the Total Return Bond Fund to 0.90% for A shares and 1.65% for B and C shares.

Calendar year returns measure net investment income and capital gain or loss from portfolio investments for each period specified. Calamos Advisors has contractually agreed (through 6/30/10) to limit annual expenses of each Fund except the Multi-Fund Blend and the Total Return Bond Fund to 1.75% for A shares and 2.50% for B and C shares. After such date, the expense limitation may be terminated or revised.

Performance shown for Class B and Class C shares for all except the Blue Chip, Value, International Growth, Global Equity and Total Return Bond Funds includes the effects of an overpayment of dividends and/or capital gains distribution to shareholders of the Funds (and a corresponding capital contribution by CALAMOS ASSET MANAGEMENT, INC.), which increased certain return figures.

An investment in the Government Money Market Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, this share price is not guaranteed and you could lose money by investing in the Fund.

Before investing carefully consider the fund's investment objectives, risks, charges and expenses. Please see the prospectus containing this and other information or call 800-582-6959. Read it carefully.

Important Fund Information

• Calamos Growth, Growth and Income, Value, 130/30 Equity, Global Growth and Income, International Growth, Global Equity and Evolving World Growth Funds may invest in small and mid-size company securities, which generally present greater risk and higher volatility than investments in larger, more established companies.
• Calamos Growth, Growth and Income, Value, Blue Chip, 130/30 Equity, Global Growth and Income, International Growth, Global Equity and Evolving World Growth Funds invest a substantial portion of their assets in equity securities, which are subject to greater fluctuations in market value than other asset classes as a result of such factors as a company's business performance, investor perceptions, stock market trends, and general economic conditions.
• Calamos Global Growth and Income, International Growth, Global Equity and Evolving World Growth Funds may invest up to 100% of assets in foreign securities. Total Return Bond Fund may invest up to 35% and all other Calamos funds up to 25% of assets in foreign securities. Investing outside the U.S. offers both risks and rewards. Increased volatility, changes in the value of foreign currencies, and difficulty in obtaining information are some of the risks involved.
• Global Growth and Income, International Growth, Global Equity, Evolving World Growth and Total Return Bond Funds may invest in securities issued by companies in emerging markets; these may present additional risk due to the potential for greater economic and political instability in less developed countries.
• Calamos High Yield Fund invests and Total Return Bond Funds may invest in lower-rated fixed-income securities, often referred to as "junk bonds," which generally present greater risks than higher-quality securities, because of the greater likelihood that the company issuing the lower-rated securities will default on income and principal payments.
• Calamos Growth and Income, 130/30 Equity, Global Growth and Income, Convertible and Market Neutral Income Funds: There are certain risks associated with an investment in a convertible bond such as a default risk—the company issuing a convertible security may be unable to repay principal and interest—and interest rate risk—the convertible may decrease in value if interest rates increase.
• Calamos Market Neutral Income and 130/30 Equity Funds engage in short sales. Short sales involve the risk that the Fund may incur a loss if the market value of a borrowed security increases between the date of the short sale and the date the Fund replaces the security. A short position in a security poses more risk than holding the same security long. Because a short position loses value as the security's price increases, the loss on a short sale is theoretically unlimited. It is possible that the market value of the securities the Fund holds in long positions will decline at the same time that the market value of the securities the Fund has sold short increases, thereby increasing the Fund's potential volatility. The Market Neutral Income Fund engages in short sales of convertible securities' underlying stock, which may increase volatility and portfolio turnover.
• Calamos Total Return Bond Fund may invest in derivative securities, including options, futures contracts and swap agreements. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. There is no assurance that any derivative strategy used by the Fund will succeed.
• In addition to market risk, there are certain risks associated with an investment in Calamos Total Return Bond Fund, such as default risk, the risk that the company issuing debt securities will be unable to repay principal and interest, and interest rate risk that the security may decrease in value if interest rates increase.
• Calamos 130/30 Equity Fund borrows securities and then sells them, effectively leveraging its assets. The use of leverage may magnify gains or losses for the Fund. Assets segregated to cover those transactions may decline in value and are not available to meet redemptions.
• Calamos 130/30 Equity Fund engages in quantitative investing. The value of securities selected using quantitative-based analysis can react differently to issuer, political, market, and economic developments than the market as a whole or securities selected using only fundamental analysis. The factors used in quantitative-based analysis and the weight placed on those factors may not be predictive of a security's value. In addition, factors that affect a security's value can change over time and these changes may not be reflected in the quantitative model.
• Calamos 130/30 Equity Fund may engage in active and frequent trading of securities. That may result in a higher than average level of capital gains and greater transaction costs to the Fund, including brokerage commissions or dealer mark-ups and other transaction costs on the sale and reinvestments of securities. Such sales may also result in the realization of capital gains, including short-term capital gains (which are taxed at ordinary income tax rates for federal income tax purposes, rather than at lower capital gains rates) and may adversely impact the Fund's performance.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE

Performance of the Growth Fund reflects the effects of an expense reimbursement that improved results and was in effect until March 31, 2000.

Performance shown for the Convertible Fund and Global Growth and Income Fund includes the effects of an overpayment of dividends and/ or capital gains distribution to shareholders of certain classes of shares of the Fund (and a corresponding capital contribution by Calamos Advisors LLC), which increased certain return figures.

Performance shown for the Blue Chip and Value Funds reflects the effects of an expense reimbursement which improved results.

¹Net asset value is the $U.S. value of a single share excluding any sales charges. NAV Change shows the change in value from the prior business day: + = gain; - = loss; NC = no change. The net asset value of a fund will fluctuate. Please note that total return is considered one of the best measures of overall performance of most mutual fund investments. More complete information and long-term performance is available for each Fund by clicking on any Fund name. Shares are redeemable at current net asset value, which may be more or less than their original cost

Calamos Financial Services LLC, Distributor

Performance data quoted represents past performance, which is no guarantee of future results. Current performance may be lower or higher than the performance quoted. The principal value and investment return of an investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost.

Average annual total return measures net investment income and capital gain or loss from portfolio investments as an annualized average assuming reinvestment of dividends and capital gains distributions. Daily performance returns are not adjusted for the 4.75% front-end sales charge, which would reduce the performance quoted. Where indicated, quarterly returns are adjusted for the maximum front-end sales load of 4.75% for Class A shares (3.75% for Total Return Bond Fund Class A Shares). Class B shares have a declining contingent deferred sales charge over six years, with a maximum of 5% in year one (3.50% for Total Return Bond Fund Class B shares). Class B shares automatically convert to A shares after eight years. There is a 1% contingent deferred sales charge for C shares on certain redemptions within the first year of purchase. Class B and C shares have been adjusted for the contingent deferred sales charge (CDSC). Class I shares are also available for institutional investors. The funds' gross expense ratios as published in the latest prospectuses are as follows: Growth A 1.22%, B 1.97%, C 1.97%, I 0.97%, R 1.47%; Growth and Income A 1.07%, B 1.82%, C 1.82%, I 0.82%, R 1.32%; Value A 1.49%, B 2.24%, C 2.24%, I 1.24%, R 1.74%; Blue Chip A 1.46%, B 2.21%, C 2.21%, I 1.21%, R 1.71%; Multi-Fund Blend A 1.86, B 2.61%, C 2.61%, I 1.61%, R 2.11%; Global Growth and Income A 1.36%, B 2.11%, C 2.11%, I 1.11%, R 1.61%; International Growth A 1.48%, B 2.23%, C 2.23%, I 1.23%, R 1.73%; Global Equity A 1.82% , B 2.57%, C 2.57%, I 1.57%, R 2.07%; Evolving World Growth A 3.10%, B 3.85%, C 3.85%, I 2.85%, R 3.35%; Convertible A 1.15%, B 1.90%, C 1.90%, I 0.90%, R 1.40%; Market Neutral Income A 1.14%, B 1.89%, C 1.89%, I 0.89%, R 1.39%; High Yield A 1.21%, B 1.96%, C 1.96%, I 0.96%, R 1.46%; Total Return Bond A 1.20%, B 1.95%, C 1.95%, I 0.95%, R 1.45%. The gross expense ratios for all share classes of Calamos Evolving World Growth Fund are annualized. Besides the expenses of the underlying funds, Calamos Multi-Fund Blend will incur other expenses (currently capped at 0.25% until 6/30/10). Calamos Advisors also has contractually agreed (through 6/30/10) to limit annual expenses for the Total Return Bond Fund to 0.90% for A shares and 1.65% for B and C shares.

Calendar year returns measure net investment income and capital gain or loss from portfolio investments for each period specified. Calamos Advisors has contractually agreed (through 6/30/10) to limit annual expenses of each Fund except the Multi-Fund Blend and the Total Return Bond Fund to 1.75% for A shares and 2.50% for B and C shares. After such date, the expense limitation may be terminated or revised.

Performance shown for Class B and Class C shares for all except the Blue Chip, Value, International Growth, Global Equity and Total Return Bond Funds includes the effects of an overpayment of dividends and/or capital gains distribution to shareholders of the Funds (and a corresponding capital contribution by CALAMOS ASSET MANAGEMENT, INC.), which increased certain return figures.

An investment in the Government Money Market Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, this share price is not guaranteed and you could lose money by investing in the Fund.

Before investing carefully consider the fund's investment objectives, risks, charges and expenses. Please see the prospectus containing this and other information or call 800-582-6959. Read it carefully.

Important Fund Information

• Calamos Growth, Growth and Income, Value, Global Growth and Income, International Growth, Global Equity and Evolving World Growth Funds may invest in small and mid-size company securities, which generally present greater risk and higher volatility than investments in larger, more established companies.
• Calamos Growth, Growth and Income, Value, Blue Chip, Global Growth and Income, International Growth, Global Equity and Evolving World Growth Funds invest a substantial portion of their assets in equity securities, which are subject to greater fluctuations in market value than other asset classes as a result of such factors as a company's business performance, investor perceptions, stock market trends, and general economic conditions.
• Calamos Global Growth and Income, International Growth, Global Equity and Evolving World Growth Funds may invest up to 100% of assets in foreign securities. Total Return Bond Fund may invest up to 35% and all other Calamos funds up to 25% of assets in foreign securities. Investing outside the U.S. offers both risks and rewards. Increased volatility, changes in the value of foreign currencies, and difficulty in obtaining information are some of the risks involved.
• Global Growth and Income, International Growth, Global Equity, Evolving World Growth and Total Return Bond Funds may invest in securities issued by companies in emerging markets; these may present additional risk due to the potential for greater economic and political instability in less developed countries.
• Calamos High Yield Fund invests and Total Return Bond Funds may invest in lower-rated fixed-income securities, often referred to as "junk bonds," which generally present greater risks than higher-quality securities, because of the greater likelihood that the company issuing the lower-rated securities will default on income and principal payments.
• Calamos Growth and Income, Convertible and Market Neutral Income Funds: There are certain risks associated with an investment in a convertible bond such as a default risk—the company issuing a convertible security may be unable to repay principal and interest—and interest rate risk—the convertible may decrease in value if interest rates increase.
• Calamos Market Neutral Income Fund engages in short sales. Short sales involve the risk that the Fund may incur a loss if the market value of a borrowed security increases between the date of the short sale and the date the Fund replaces the security. A short position in a security poses more risk than holding the same security long. Because a short position loses value as the security's price increases, the loss on a short sale is theoretically unlimited. It is possible that the market value of the securities the Fund holds in long positions will decline at the same time that the market value of the securities the Fund has sold short increases, thereby increasing the Fund's potential volatility. The Market Neutral Income Fund engages in short sales of convertible securities' underlying stock, which may increase volatility and portfolio turnover.
• Calamos Total Return Bond Fund may invest in derivative securities, including options, futures contracts and swap agreements. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. There is no assurance that any derivative strategy used by the Fund will succeed.
• In addition to market risk, there are certain risks associated with an investment in Calamos Total Return Bond Fund, such as default risk, the risk that the company issuing debt securities will be unable to repay principal and interest, and interest rate risk that the security may decrease in value if interest rates increase.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE

Performance of the Growth Fund reflects the effects of an expense reimbursement that improved results and was in effect until March 31, 2000.

Performance shown for the Convertible Fund and Global Growth and Income Fund includes the effects of an overpayment of dividends and/ or capital gains distribution to shareholders of certain classes of shares of the Fund (and a corresponding capital contribution by Calamos Advisors LLC), which increased certain return figures.

Performance shown for the Blue Chip and Value Funds reflects the effects of an expense reimbursement which improved results.

¹Net asset value is the $U.S. value of a single share excluding any sales charges. NAV Change shows the change in value from the prior business day: + = gain; - = loss; NC = no change. The net asset value of a fund will fluctuate. Please note that total return is considered one of the best measures of overall performance of most mutual fund investments. More complete information and long-term performance is available for each Fund by clicking on any Fund name. Shares are redeemable at current net asset value, which may be more or less than their original cost

Calamos Financial Services LLC, Distributor

¹Source: Morningstar, Inc. Morningstar Ratings are based on risk-adjusted returns. The Overall Morningstar Rating is derived from a weighted average of the performance figures associated with a fund's 3, 5 and 10-year (if applicable) Morningstar Rating metrics. Ratings are for Class A shares, the other classes may have different performance characteristics.

²Source: Lipper, Inc. Lipper rankings are based on net total return performance, and do not reflect the effect of sales charges; if they had, results may have been less favorable.

Performance data quoted represents past performance, which is no guarantee of future results. Current performance may be lower or higher than the performance quoted. The principal value and investment return of an investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost.

Before investing, carefully consider the fund's investment objectives, risks, charges and expenses. Please see the prospectus containing this and other information or call 800-582-6959. Read it carefully.

Important Fund Information

• Calamos Growth, Growth and Income, Value, Global Growth and Income, International Growth, Global Equity and Evolving World Growth Funds may invest in small and mid-size company securities, which generally present greater risk and higher volatility than investments in larger, more established companies.
• Calamos Growth, Growth and Income, Value, Blue Chip, Global Growth and Income, International Growth, Global Equity and Evolving World Growth Funds invest a substantial portion of their assets in equity securities, which are subject to greater fluctuations in market value than other asset classes as a result of such factors as a company's business performance, investor perceptions, stock market trends, and general economic conditions.
• Calamos Global Growth and Income, International Growth, Global Equity and Evolving World Growth Funds may invest up to 100% of assets in foreign securities. Total Return Bond Fund may invest up to 35% and all other Calamos funds up to 25% of assets in foreign securities. Investing outside the U.S. offers both risks and rewards. Increased volatility, changes in the value of foreign currencies, and difficulty in obtaining information are some of the risks involved.
• Global Growth and Income, International Growth, Global Equity, Evolving World Growth and Total Return Bond Funds may invest in securities issued by companies in emerging markets; these may present additional risk due to the potential for greater economic and political instability in less developed countries.
• Calamos High Yield Fund invests and Total Return Bond Funds may invest in lower-rated fixed-income securities, often referred to as "junk bonds," which generally present greater risks than higher-quality securities, because of the greater likelihood that the company issuing the lower-rated securities will default on income and principal payments.
• Calamos Growth and Income, Global Growth and Income, Convertible and Market Neutral Income Funds: There are certain risks associated with an investment in a convertible bond such as a default risk—the company issuing a convertible security may be unable to repay principal and interest—and interest rate risk—the convertible may decrease in value if interest rates increase.
• Calamos Market Neutral Income Fund engages in short sales. Short sales involve the risk that the Fund may incur a loss if the market value of a borrowed security increases between the date of the short sale and the date the Fund replaces the security. A short position in a security poses more risk than holding the same security long. Because a short position loses value as the security's price increases, the loss on a short sale is theoretically unlimited. It is possible that the market value of the securities the Fund holds in long positions will decline at the same time that the market value of the securities the Fund has sold short increases, thereby increasing the Fund's potential volatility. The Market Neutral Income Fund engages in short sales of convertible securities' underlying stock, which may increase volatility and portfolio turnover.
• Calamos Total Return Bond Fund may invest in derivative securities, including options, futures contracts and swap agreements. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. There is no assurance that any derivative strategy used by the Fund will succeed.
• In addition to market risk, there are certain risks associated with an investment in Calamos Total Return Bond Fund, such as default risk, the risk that the company issuing debt securities will be unable to repay principal and interest, and interest rate risk that the security may decrease in value if interest rates increase.

¹Source: Morningstar, Inc. Morningstar Ratings are based on risk-adjusted returns. The Overall Morningstar Rating is derived from a weighted average of the performance figures associated with a fund's 3, 5 and 10-year (if applicable) Morningstar Rating metrics. Ratings are for Class A shares, the other classes may have different performance characteristics.

²Source: Lipper, Inc. Lipper rankings are based on net total return performance, and do not reflect the effect of sales charges; if they had, results may have been less favorable.

³Lipper categorization for the Calamos Value and Blue Chip funds has recently changed from Multi-Cap core to Large-Cap core. New rankings in this category will be posted as the data become available.

Performance data quoted represents past performance, which is no guarantee of future results. Current performance may be lower or higher than the performance quoted. The principal value and investment return of an investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost.

Before investing, carefully consider the fund's investment objectives, risks, charges and expenses. Please see the prospectus containing this and other information or call 800-582-6959. Read it carefully.

Important Fund Information

• Calamos Growth, Growth and Income, Value, Global Growth and Income, International Growth, Global Equity and Evolving World Growth Funds may invest in small and mid-size company securities, which generally present greater risk and higher volatility than investments in larger, more established companies.
• Calamos Growth, Growth and Income, Value, Blue Chip, Global Growth and Income, International Growth, Global Equity and Evolving World Growth Funds invest a substantial portion of their assets in equity securities, which are subject to greater fluctuations in market value than other asset classes as a result of such factors as a company's business performance, investor perceptions, stock market trends, and general economic conditions.
• Calamos Global Growth and Income, International Growth, Global Equity and Evolving World Growth Funds may invest up to 100% of assets in foreign securities. Total Return Bond Fund may invest up to 35% and all other Calamos funds up to 25% of assets in foreign securities. Investing outside the U.S. offers both risks and rewards. Increased volatility, changes in the value of foreign currencies, and difficulty in obtaining information are some of the risks involved.
• Global Growth and Income, International Growth, Global Equity, Evolving World Growth and Total Return Bond Funds may invest in securities issued by companies in emerging markets; these may present additional risk due to the potential for greater economic and political instability in less developed countries.
• Calamos High Yield Fund invests and Total Return Bond Funds may invest in lower-rated fixed-income securities, often referred to as "junk bonds," which generally present greater risks than higher-quality securities, because of the greater likelihood that the company issuing the lower-rated securities will default on income and principal payments.
• Calamos Growth and Income, Global Growth and Income, Convertible and Market Neutral Income Funds: There are certain risks associated with an investment in a convertible bond such as a default risk—the company issuing a convertible security may be unable to repay principal and interest—and interest rate risk—the convertible may decrease in value if interest rates increase.
• Calamos Market Neutral Income Fund engages in short sales. Short sales involve the risk that the Fund may incur a loss if the market value of a borrowed security increases between the date of the short sale and the date the Fund replaces the security. A short position in a security poses more risk than holding the same security long. Because a short position loses value as the security's price increases, the loss on a short sale is theoretically unlimited. It is possible that the market value of the securities the Fund holds in long positions will decline at the same time that the market value of the securities the Fund has sold short increases, thereby increasing the Fund's potential volatility. The Market Neutral Income Fund engages in short sales of convertible securities' underlying stock, which may increase volatility and portfolio turnover.
• Calamos Total Return Bond Fund may invest in derivative securities, including options, futures contracts and swap agreements. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. There is no assurance that any derivative strategy used by the Fund will succeed.
• In addition to market risk, there are certain risks associated with an investment in Calamos Total Return Bond Fund, such as default risk, the risk that the company issuing debt securities will be unable to repay principal and interest, and interest rate risk that the security may decrease in value if interest rates increase.