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CALAMOS EVOLVING WORLD GROWTH FUND (CNWGX)

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EVOLVING
WORLD GROWTH BEATING EEM

The Calamos Evolving World Growth Fund was originally featured in emergingmoney.com (co-founded by CNBC's Tim Seymour) and written by Marit Molin. The article highlights the fund's performance, investment process and includes comments by John P. Calamos, Sr. Please click here to read the full article.

Investment Strategy

The fund invests primarily in equity securities issued by non-U.S. companies that we believe offer the best opportunities for growth through developing economies. Companies will have at least 20% of sales from or assets in emerging markets. The fund may attempt to manage risk through investments in convertible and fixed income securities.

  • Active management blending global investment themes and fundamental research
  • Invests in companies we believe are positioned to benefit from emerging economies regardless of company domicile
  • Flexibility to pursue best risk/reward opportunities across country, market capitalization and sector
  • Utilizes equities and convertible securities to manage risk and return profile

Return on Invested Capital

AS OF 3/31/13

Beta Since Inception

AS OF 3/31/13

Return on invested capital measures how effectively a company uses the money invested in its operations, calculated as a company’s net income minus any dividends divided by the company’s total capital. Beta is a historic measure of a fund's relative volatility, which is one of the measures of risk; a beta of 0.5 reflects 1/2 the market's volatility as represented by the Index, while a beta of 2.0 reflects twice the market's volatility.

Fund Objective

The fund seeks long-term capital growth.

Fund Benchmarks

  • MSCI Emerging Markets Index

Investment Process

The fund's investment team employs an investment process that considers global macro economic factors and investment themes. The team conducts both fundamental and quantitative research to evaluate the source, sustainability and risk of investment opportunities. The team manages a diversified portfolio monitoring and managing risk at the portfolio and individual security level.

Investment Team

John P. Calamos, Sr., Global Co-Chief Investment Officer and Gary D. Black, Global Co-Chief Investment Officer lead an integrated team of experienced investment professionals.

Before investing carefully consider the fund's investment objectives, risks, charges and expenses. Please see the prospectus and summary prospectus containing this and other information or call 1-800-582-6959. Read it carefully before investing.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE

Calamos Financial Services LLC, Distributor


Important Risk Information

An investment in the Fund(s) is subject to risks, and you could lose money on your investment in the Fund(s). There can be no assurance that the Fund(s) will achieve its investment objective. Your investment in the Fund(s) is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. The risks associated with an investment in the Fund(s) can increase during times of significant market volatility. The Fund(s) also has specific principal risks, which are described below. More detailed information regarding these risks can be found in the Fund's prospectus.

The principal risks of investing in the Calamos Evolving World Growth Fund include: equity securities risk, growth stock risk, foreign securities risk, emerging markets risk, convertible securities risk and portfolio selection risk.

As a result of political or economic instability in foreign countries, there can be special risks associated with investing in foreign securities, including fluctuations in currency exchange rates, increased price volatility and difficulty obtaining information. In addition, emerging markets may present additional risk due to potential for greater economic and political instability in less developed countries.

*The Funds' historical performance exhibited lower volatility, as measured by beta and standard deviation, over the life of the Fund. The Funds' investment objective does not seek to reduce volatility, and as a result, the Funds may experience volatility in some market conditions. (Source for beta and standard deviation data is Morningstar, Inc.) Standard deviation is measure of volatility. Beta is an historic measure of a fund's relative volatility, which is one of the measures of risk; a beta of 0.5 reflects 1/2 the market's volatility as represented by the fund's primary Benchmark, while a beta of 2.0 reflects twice the volatility.

NOTES

The MSCI Emerging Markets IndexSM is a free float-adjusted market capitalization index. As of August 2005, the index consisted of the following 26 emerging market country indices: Argentina, Brazil, Chile, China, Colombia, Czech Republic, Egypt, Hungary, India, Indonesia, Israel, Jordan, Korea, Malaysia, Mexico, Morocco, Pakistan, Peru, Philippines, Poland, Russia, South Africa, Taiwan, Thailand, Turkey and Venezuela. The index represents companies within these countries that are available to investors worldwide.

Annualized Standard Deviation-A statistical measure of the historical volatility of a mutual fund or portfolio, usually computed using 36 monthly returns. More generally, a measure of the extent to which numbers are spread around their average.

Beta-Is a historic measure of a fund's relative volatility, which is one of the measures of risk; a beta of 0.5 reflects 1/2 the market's volatility as represented by the S&P 500 Index, while a beta of 2.0 reflects twice the market's volatility.

Current (SEC) Yield-Reflects the dividends and interest earned by the Fund during the 30-day period ended as of the date stated above after deducting the Fund's expenses for that same period.

Debt/Capital Ratio-Is a measure of a company s financial leverage, calculated as the company's debt divided by its total capital.

PEG Ratio-Is price/earnings ratio divided by estimated earnings growth rate in the next year; a lower PEG indicates that less is being paid for each unit of earnings growth.

Price/Book Ratio-Is a stock's capitalization divided by its book value.

Price/Earnings Ratio-Is the current stock price over trailing 12‐month earnings per share.

Price/Sales Ratio-Is the current stock price over trailing 12‐month sales per share.

The MSCI Emerging Markets Index-is a free float-adjusted market capitalization index. As of August 2005, the index consisted of the following 26 emerging market country indices: Argentina, Brazil, Chile, China, Colombia, Czech Republic, Egypt, Hungary, India, Indonesia, Israel, Jordan, Korea, Malaysia, Mexico, Morocco, Pakistan, Peru, Philippines, Poland, Russia, South Africa, Taiwan, Thailand, Turkey and Venezuela. The index represents companies within these countries that are available to investors worldwide.

ROIC (Return On Invested Capital)-Measures how effectively a company uses the money invested in its operations, calculated as a company's net income minus any dividends divided by the company's total capital.

Turnover-is the percentage of assets in a portfolio that changed over a certain period, often a year; higher turnover indicates greater buying and selling activity.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

† 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 Morningstar Rating metrics.

For each U.S.-domiciled fund with at least a three-year history, Morningstar calculates a Morningstar Rating based on a Morningstar Risk-Adjusted Return measure that accounts for variation in a fund’s monthly performance (including the effects of sales charges, loads and redemption fees), placing more emphasis on downward variations and rewarding consistent performance. The top 10% of funds in each category receive 5 stars, the next 22.5% receive 4 stars, the next 35% receive 3 stars, the next 22.5% receive 2 stars and the bottom 10% receive 1 star. (Each share class is counted as a fraction of one fund within this scale and rated separately, which may cause slight variations in the distribution percentages.) Morningstar data: © 2012 Morningstar, Inc. All rights reserved. The information contained herein is proprietary to Morningstar and/or its content providers; may not be copied or distributed; and is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

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. All performance shown assumes reinvestment of dividends and capital gains distributions. Class A shares load-adjusted returns are adjusted for the maximum front-end sales load of 4.75%. The Funds also offer Class B and C shares, the performance of which may vary. Performance shown reflects an expense reimbursement that improved results.

* Returns are cumulative because the inception date of the Fund is less than a year ago.

The Fund's gross expense ratio is 1.58% as of the prospectus dated 2/29/2012.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

Calendar Year Total Returns

AS OF 3/31/13

Annualized Total Returns

AS OF 3/31/13

Before investing carefully consider the fund's investment objectives, risks, charges and expenses. Please see the prospectus and summary prospectus containing this and other information or call 1-800-582-6959. Read it carefully before investing.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE

Calamos Financial Services LLC, Distributor

10k Performance is for the Fund’s Class A shares at net asset value and does not include the Fund’s maximum front-end sales charge of 4.75%—had it been included, the Fund’s return would have been lower. Index data shown is from 8/31/08, since comparative index data is available only for full monthly periods. Source: State Street Corporation and Lipper, Inc.

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 return of an investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost. Performance reflected at NAV does not include the Fund’s maximum front-end sales load of 4.75%—had it been included, the Fund’s return would have been lower. Calendar year returns measure net investment income and capital gain or loss from portfolio investments for each period specified. Average annual total return measures net investment income and capital gain or loss from portfolio investments as an annualized average. All performance shown assumes reinvestment of dividends and capital gains distributions. The Fund also offers Class B and C Shares, the performance of which may vary. As of the prospectus dated 2/29/12, the Fund’s gross expense ratios for Class A shares is 1.58%; Class B and C shares is 2.34%; Class I shares is 1.34%.

The offering price for Class I shares is the NAV per share with no initial sales charge. There are no contingent deferred sales charges or distribution or service fees with respect to Class I shares. The minimum initial investment required to purchase each Fund’s Class I shares is $1 million. Class I shares are offered primarily for direct investment by investors through certain tax-exempt retirement plans (including 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit sharing and money purchase pension plans, defined benefit plans and non qualified deferred compensation plans) and by institutional clients, provided such plans or clients have assets of at least $1 million. Class I shares may also be offered to certain other entities or programs, including, but not limited to, investment companies, under certain circumstances.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

The MSCI Emerging Markets Index-is a free float-adjusted market capitalization index. As of August 2005, the index consisted of the following 26 emerging market country indices: Argentina, Brazil, Chile, China, Colombia, Czech Republic, Egypt, Hungary, India, Indonesia, Israel, Jordan, Korea, Malaysia, Mexico, Morocco, Pakistan, Peru, Philippines, Poland, Russia, South Africa, Taiwan, Thailand, Turkey and Venezuela. The index represents companies within these countries that are available to investors worldwide.

† 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 Morningstar Rating metrics.

For each U.S.-domiciled fund with at least a three-year history, Morningstar calculates a Morningstar Rating based on a Morningstar Risk-Adjusted Return measure that accounts for variation in a fund’s monthly performance (including the effects of sales charges, loads and redemption fees), placing more emphasis on downward variations and rewarding consistent performance. The top 10% of funds in each category receive 5 stars, the next 22.5% receive 4 stars, the next 35% receive 3 stars, the next 22.5% receive 2 stars and the bottom 10% receive 1 star. (Each share class is counted as a fraction of one fund within this scale and rated separately, which may cause slight variations in the distribution percentages.) Morningstar data: © 2012 Morningstar, Inc. All rights reserved. The information contained herein is proprietary to Morningstar and/or its content providers; may not be copied or distributed; and is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

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. All performance shown assumes reinvestment of dividends and capital gains distributions. Class A shares load-adjusted returns are adjusted for the maximum front-end sales load of 4.75%. The Funds also offer Class B and C shares, the performance of which may vary. Performance shown reflects an expense reimbursement that improved results.

* Returns are cumulative because the inception date of the Fund is less than a year ago.

The Fund's gross expense ratio is 1.58% as of the prospectus dated 2/29/2012.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

Sector Weightings

AS OF 3/31/13
% of Assets MSCI Emerging Markets Index
Information Technology 31.9% 14.0%
Consumer Staples 15.5% 9.1%
Health Care 10.1% 1.3%
Energy 8.4% 11.9%
Industrials 7.4% 6.5%
Financials 5.6% 27.7%
Consumer Discretionary 4.9% 7.8%
Materials 4.2% 10.7%
Telecommunication Services 2.9% 7.4%
Utilities 0.0% 3.6%
Index Options 0.0% 0.0%
Sovereign Bonds 0.0% 0.0%
Other 0.0% 0.0%

Asset Allocation

AS OF 3/31/13

Top 10 Holdings

Adobe Logo View All Holdings AS OF 3/31/13
Company Security Type Industry
%
Companhia de Bebidas das Americas Common Stock Brewers 4.7%
Samsung Electronics Company, Ltd. Common Stock Semiconductors 4.5%
Taiwan Semiconductor Manufacturing Company, Ltd. Common Stock Semiconductors 4.2%
Novo Nordisk, A/S - Class B Common Stock Pharmaceuticals 3.7%
Tata Consultancy Services, Ltd. Common Stock IT Consulting & Other Services 3.0%
Genomma Lab Internacional, SAB de CV Common Stock Pharmaceuticals 2.8%
QUALCOMM, Inc. Common Stock Communications Equipment 2.6%
HCL Technologies Ltd. Common Stock IT Consulting & Other Services 2.3%
Temasek Financial, Ltd. (Standard Chartered, PLC) Convertible Bonds Diversified Banks 2.1%
Pegatron Corp. Convertible Bonds Computer Hardware 2.0%
Total 31.9%

Fund Facts

AS OF 3/31/13


Fund MSCI Emerging Markets Index
Total Net Assets $424.7 million --
# of Holdings 78 823
Duration 1.9 years --
Median Investment Premium 12.4% --
Median Conversion Premium 32.3% --
Turnover 52.3% --
Price/Book 4.0x 0.2x
Price/Earnings 15.6x 11.3x
Price/Sales 1.9x 0.6x
PEG Ratio 1.2x 1.1x
Debt/Capital 18.4% 27.6%
ROIC 22.9% 16.8%
Portfolio Turnover (12 months) 52.3% --

Market Capitalization

AS OF 3/31/13
> $63bil 35.4%
$18bil - $63bil 28.1%
$6bil - $18bil 16.1%
$2bil - $6bil 15.5%
< $2bil 4.9%

Regional Exposure

AS OF 3/31/13
Asia/Pacific 45.3%
Europe 22.7%
North America 11.7%
Latin America 10.5%
Middle East/Africa 0.6%
Caribbean 0.0%

Country Exposure

AS OF 3/31/13
Taiwan 13.4%
India 11.8%
United States 9.5%
United Kingdom 7.7%
South Korea 7.5%
Hong Kong 6.9%
Brazil 6.5%
China 5.7%
Switzerland 4.1%
Denmark 3.7%

Currency Exposure

AS OF 3/31/13
United States Dollar (USD) 21.2%
Hong Kong Dollar (HKD) 12.2%
Taiwan Dollar (TWD) 11.7%
Indian Rupee (INR) 11.6%
South Korean WON (KRW) 7.2%
Brazilian Real (BRL) 7.2%
Swiss Franc (CHF) 4.6%
British Pound Sterling (GBP) 4.3%
Danish Krone (DKK) 4.1%
Euro (EUR) 4.0%
Mexican Peso (MXN) 3.0%
Canadian Dollar (CAD) 2.3%
Singapore Dollar (SGD) 2.3%
Chilean Peso (CLP) 1.4%
Norwegian Krone (NOK) 1.2%
Swedish Krona (SEK) 1.0%
South African Rand (ZAR) 0.7%
Japanese Yen (JPY) 0.0%
Russian Ruble (RUB) 0.0%
Australian Dollar (AUD) 0.0%
Malaysian Ringgit (MYR) 0.0%
Indonesian Rupiah (IDR) 0.0%
Thai Bahat (THB) 0.0%
Turkish New Lira (TRY) 0.0%
Polish Zloty (PLN) 0.0%
Colombian Peso (COP) 0.0%
Philippines Peso (PHP) 0.0%
Czech Koruna (CZK) 0.0%
Egyptian Pound (EGP) 0.0%
Israeli Shekel (ILS) 0.0%
Hungarian Forint (HUF) 0.0%
Moroccan Dirham (MAD) 0.0%
New Zealand Dollar (NZD) 0.0%

Credit Quality of Bonds

AS OF 3/31/13
AAA 0.0%
AA 8.6%
A 0.3%
BBB 21.7%
BB 0.0%
B 0.0%
CCC and below 0.0%
Unrated Securities 69.4%

Maturity Schedule

AS OF 3/31/13
Equities & Other 73.0%
< 1 Year 13.1%
1 To 5 Years 12.3%
5 To 10 Years 1.6%
10 To 20 Years 0.0%
20 To 30 Years 0.0%
> 30 Years 0.0%

Bond Duration

AS OF 3/31/13
Weighted Avg. Duration 1.9 years
Weighted Avg. Maturity 2.3 years

1Top 10 Holdings and Sector Weightings are calculated as a percentage of Net Assets. The tables exclude cash or cash equivalents, any government / sovereign bonds or broad based index hedging securities the portfolio may hold. You can obtain a complete listing of holdings by visiting www.calamos.com.

Holdings and weightings are subject to change daily. Holdings are provided for informational purposes only and should not be deemed as a recommendation to buy or sell the securities mentioned.

Before investing carefully consider the fund's investment objectives, risks, charges and expenses. Please see the prospectus and summary prospectus containing this and other information or call 1-800-582-6959. Read it carefully before investing.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE

Calamos Financial Services LLC, Distributor

Important Fund Information.
Lipper Emerging Markets Funds—Represents funds that seek long-term capital appreciation by investing at least 65% of total assets in emerging market equity securities, where “emerging market” is defined by a country’s GNP per capita or other economic measures.

MSCI Emerging Markets Index—is a free float adjusted market capitalization index. It includes market indexes of Brazil, Chile, China, Colombia, Czech Republic, Egypt, Hungary, India, Indonesia, Israel, Korea, Malaysia, Mexico, Morocco, Peru, Philippines, Poland, Russia, South Africa, Taiwan, Thailand, and Turkey.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investor cannot invest directly in an index.

Important Risk Information.
An investment in the Fund(s) is subject to risks, and you could lose money on your investment in the Fund(s). There can be no assurance that the Fund(s) will achieve its investment objective. Your investment in the Fund(s) is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. The risks associated with an investment in the Fund(s) can increase during times of significant market volatility. The Fund(s) also has specific principal risks, which are described below. More detailed information regarding these risks can be found in the Fund’s prospectus.

The principal risks of investing in the Calamos Evolving World Growth Fund include: equity securities risk, growth stock risk, foreign securities risk, emerging markets risk, convertible securities risk and portfolio selection risk. As a result of political or economic instability in foreign countries, there can be special risks associated with investing in foreign securities, including fluctuations in currency exchange rates, increased price volatility and difficulty obtaining information. In addition, emerging markets may present additional risk due to potential for greater economic and political instability in less developed countries.

Before investing, carefully consider the Fund’s investment objectives, risks, charges and expenses. Contact 800.582.6959 for a prospectus containing this and other information. Read it carefully.

Portfolios are managed according to their respective strategies which may differ significantly in terms of security holdings, industry weightings, and asset allocation from those of the benchmark(s). Portfolio performance, characteristics and volatility may differ from the benchmark(s) shown.

The MSCI Emerging Markets Index-is a free float-adjusted market capitalization index. As of August 2005, the index consisted of the following 26 emerging market country indices: Argentina, Brazil, Chile, China, Colombia, Czech Republic, Egypt, Hungary, India, Indonesia, Israel, Jordan, Korea, Malaysia, Mexico, Morocco, Pakistan, Peru, Philippines, Poland, Russia, South Africa, Taiwan, Thailand, Turkey and Venezuela. The index represents companies within these countries that are available to investors worldwide.

† 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 Morningstar Rating metrics.

For each U.S.-domiciled fund with at least a three-year history, Morningstar calculates a Morningstar Rating based on a Morningstar Risk-Adjusted Return measure that accounts for variation in a fund’s monthly performance (including the effects of sales charges, loads and redemption fees), placing more emphasis on downward variations and rewarding consistent performance. The top 10% of funds in each category receive 5 stars, the next 22.5% receive 4 stars, the next 35% receive 3 stars, the next 22.5% receive 2 stars and the bottom 10% receive 1 star. (Each share class is counted as a fraction of one fund within this scale and rated separately, which may cause slight variations in the distribution percentages.) Morningstar data: © 2012 Morningstar, Inc. All rights reserved. The information contained herein is proprietary to Morningstar and/or its content providers; may not be copied or distributed; and is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

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. All performance shown assumes reinvestment of dividends and capital gains distributions. Class A shares load-adjusted returns are adjusted for the maximum front-end sales load of 4.75%. The Funds also offer Class B and C shares, the performance of which may vary. Performance shown reflects an expense reimbursement that improved results.

* Returns are cumulative because the inception date of the Fund is less than a year ago.

The Fund's gross expense ratio is 1.58% as of the prospectus dated 2/29/2012.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

Total Capital Gains

  
20110.0000
20100.0000
20090.0000
20080.0000

Schedule

   
Distributions Annually
Capital Gains Annually

Distributions

Choose a year  
Income Total Reinvest
1Q 2013 0.00000 0.00000 0.00000
4Q 2012 0.00000 0.00000 13.02000
3Q 2012 0.00000 0.00000 0.00000
2Q 2012 0.00000 0.00000 0.00000
1Q 2012 0.00000 0.00000 0.00000
4Q 2011 0.00000 0.00000 0.00000
3Q 2011 0.00000 0.00000 0.00000
2Q 2011 0.00000 0.00000 0.00000
1Q 2011 0.00000 0.00000 0.00000
4Q 2010 0.00000 0.00000 0.00000
3Q 2010 0.00000 0.00000 0.00000
2Q 2010 0.00000 0.00000 0.00000
1Q 2010 0.00000 0.00000 0.00000
4Q 2009 0.07329 0.07329 10.76000
3Q 2009 0.00000 0.00000 0.00000
2Q 2009 0.00000 0.00000 0.00000
1Q 2009 0.00000 0.00000 0.00000
4Q 2008 0.06208 0.06208 7.02000
3Q 2008 0.00000 0.00000 0.00000
Adobe Logo Fourth Quarter and Annual Income Distributions

For more information about the Funds such as sector weightings, top holdings, credit ratings and distribution rates, please contact Client Services at 800-582-6959.

Each Fund is a series of Calamos Investment Trust. The investment adviser to the Funds is Calamos Advisors LLC. The Calamos Family of Funds offers a range of investment strategies for individual investors with diverse investment objectives and needs. For more information on the Funds, please call 800-582-6959.

Before investing carefully consider the fund's investment objectives, risks, charges and expenses. Please see the prospectus and summary prospectus containing this and other information or call 1-800-582-6959. Read it carefully before investing.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE

Calamos Financial Services LLC, Distributor

† 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 Morningstar Rating metrics.

For each U.S.-domiciled fund with at least a three-year history, Morningstar calculates a Morningstar Rating based on a Morningstar Risk-Adjusted Return measure that accounts for variation in a fund’s monthly performance (including the effects of sales charges, loads and redemption fees), placing more emphasis on downward variations and rewarding consistent performance. The top 10% of funds in each category receive 5 stars, the next 22.5% receive 4 stars, the next 35% receive 3 stars, the next 22.5% receive 2 stars and the bottom 10% receive 1 star. (Each share class is counted as a fraction of one fund within this scale and rated separately, which may cause slight variations in the distribution percentages.) Morningstar data: © 2012 Morningstar, Inc. All rights reserved. The information contained herein is proprietary to Morningstar and/or its content providers; may not be copied or distributed; and is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

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. All performance shown assumes reinvestment of dividends and capital gains distributions. Class A shares load-adjusted returns are adjusted for the maximum front-end sales load of 4.75%. The Funds also offer Class B and C shares, the performance of which may vary. Performance shown reflects an expense reimbursement that improved results.

* Returns are cumulative because the inception date of the Fund is less than a year ago.

The Fund's gross expense ratio is 1.58% as of the prospectus dated 2/29/2012.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

Annual Expenses

A Shares B Shares C Shares I Shares
Total Expense Ratio1.602.352.361.36
Net Expense Ratio1.602.352.361.36
Transaction Fee0.000.000.000.00
Redemption Fee0.000.000.000.00

Investment Information

A Shares B Shares C Shares I Shares
Minimum initial investment$2,500$2,500$2,500$1 million
Minimum subsequent investments$50$50$50$0
IRA initial investments$500$500$500N/A

Fund Information

A Shares B Shares C Shares I Shares
Inception Date8/15/088/15/088/15/088/15/08
Ticker SymbolCNWGXCNWZXCNWDXCNWIX
CUSIP number128119161128119153128119146128119138

Sales & Distribution

A Shares B Shares C Shares I Shares
Sales loadFront-endBack-endLevel-loadN/A
Maximum Sales Charge4.75%5.00%1.00%N/A
US Bank Fund Number1952195319541955
DistributionsAnnual dividends; annual capital gains

For more information about the Funds such as sector weightings, top holdings, credit ratings and distribution rates, please contact Client Services at 800-582-6959.

Each Fund is a series of Calamos Investment Trust. The investment adviser to the Funds is Calamos Advisors LLC. The Calamos Family of Funds offers a range of investment strategies for individual investors with diverse investment objectives and needs. For more information on the Funds, please call 800-582-6959.

Before investing carefully consider the fund's investment objectives, risks, charges and expenses. Please see the prospectus and summary prospectus containing this and other information or call 1-800-582-6959. Read it carefully before investing.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE

Calamos Financial Services LLC, Distributor

† 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 Morningstar Rating metrics.

For each U.S.-domiciled fund with at least a three-year history, Morningstar calculates a Morningstar Rating based on a Morningstar Risk-Adjusted Return measure that accounts for variation in a fund’s monthly performance (including the effects of sales charges, loads and redemption fees), placing more emphasis on downward variations and rewarding consistent performance. The top 10% of funds in each category receive 5 stars, the next 22.5% receive 4 stars, the next 35% receive 3 stars, the next 22.5% receive 2 stars and the bottom 10% receive 1 star. (Each share class is counted as a fraction of one fund within this scale and rated separately, which may cause slight variations in the distribution percentages.) Morningstar data: © 2012 Morningstar, Inc. All rights reserved. The information contained herein is proprietary to Morningstar and/or its content providers; may not be copied or distributed; and is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

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. All performance shown assumes reinvestment of dividends and capital gains distributions. Class A shares load-adjusted returns are adjusted for the maximum front-end sales load of 4.75%. The Funds also offer Class B and C shares, the performance of which may vary. Performance shown reflects an expense reimbursement that improved results.

* Returns are cumulative because the inception date of the Fund is less than a year ago.

The Fund's gross expense ratio is 1.58% as of the prospectus dated 2/29/2012.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

Literature

Evolving World Growth Fund Quarterly Commentary A quarterly update of the Calamos Evolving World Growth Fund’s performance, positioning, related market commentary and outlook.
Calamos Evolving World Growth Fund Fact Sheet The Evolving World Growth Fund fact sheet provides a snap shot of the investment team, the fund strategy, performance, composition, ratings and returns.
Fund Brochure Emerging markets (EMs) have become increasingly important within the global economy. This brochure explores what we believe are some of the most important EM trends and their implications for companies all over the world. Calamos Evolving World Growth Fund seeks to capitalize on the global potential of EMs through an innovative "companies, not countries" approach.
Summary Prospectus (Class A, B, C) This summary contains important information about the Class A, B and C Evolving World Growth Fund investment objective, fees and expenses, principal investment strategies, principal risks and performance.
Summary Prospectus (Class I, R) This summary contains important information about the Class I and R Evolving World Growth Fund investment objective, fees and expenses, principal investment strategies, principal risks and performance.
Statutory Prospectus (Class A, B, C) This prospectus supplement, together with the accompanying prospectus, sets forth concisely the information that you should know before investing. You should read the accompanying prospectus and prospectus supplement, which contain important information, before deciding whether to invest in our securities.
Statutory Prospectus (Class I, R) This prospectus supplement, together with the accompanying prospectus, sets forth concisely the information that you should know before investing. You should read the accompanying prospectus and prospectus supplement, which contain important information, before deciding whether to invest in our securities.
SAI The statement of additional information is a supplementary document to the fund’s prospectus and contains additional information about the fund and includes further disclosure regarding its operations.
Semiannual Report The semiannual report includes a letter from John P. Calamos, Sr. to shareholders and provides a comprehensive review of the fund’s activities and financial performance over a six month period.
Annual Report The annual report includes a letter from John P. Calamos, Sr. to shareholders outlining the fund's performance, as well as a comprehensive review of the fund’s activities and financial performance.
Fine-Tuning Exposure to Growth in Emerging Economies The Calamos Investment team discusses our flexible, risk-managed approach to uncovering growth opportunities emanating from emerging markets.
Emerging Money Features Evolving World Growth Fund Marit Molin of Emerging Money highlights the Calamos Evolving World Growth Fund in his recent write up. The article reviews the fund’s performance, insights from John P. Calamos Sr. on emerging markets, and the fund’s risk managed approach.

Before investing carefully consider the fund's investment objectives, risks, charges and expenses. Please see the prospectus and summary prospectus containing this and other information or call 1-800-582-6959. Read it carefully before investing.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE

Calamos Financial Services LLC, Distributor

† 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 Morningstar Rating metrics.

For each U.S.-domiciled fund with at least a three-year history, Morningstar calculates a Morningstar Rating based on a Morningstar Risk-Adjusted Return measure that accounts for variation in a fund’s monthly performance (including the effects of sales charges, loads and redemption fees), placing more emphasis on downward variations and rewarding consistent performance. The top 10% of funds in each category receive 5 stars, the next 22.5% receive 4 stars, the next 35% receive 3 stars, the next 22.5% receive 2 stars and the bottom 10% receive 1 star. (Each share class is counted as a fraction of one fund within this scale and rated separately, which may cause slight variations in the distribution percentages.) Morningstar data: © 2012 Morningstar, Inc. All rights reserved. The information contained herein is proprietary to Morningstar and/or its content providers; may not be copied or distributed; and is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

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. All performance shown assumes reinvestment of dividends and capital gains distributions. Class A shares load-adjusted returns are adjusted for the maximum front-end sales load of 4.75%. The Funds also offer Class B and C shares, the performance of which may vary. Performance shown reflects an expense reimbursement that improved results.

* Returns are cumulative because the inception date of the Fund is less than a year ago.

The Fund's gross expense ratio is 1.58% as of the prospectus dated 2/29/2012.

Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

Fund Details

As of 5/23/13
Inception Date:
8/15/08
Current NAV:
$13.32
$ Change:
($0.12)
% Change:
-0.90%
Net Assets*
424.7 mil
(*Total Net Assets as of 3/31/13)

Resources

Morningstar rated the Evolving World Growth A Fund among 356 Diversified Emerging Markets funds for the overall rating and the 3-year period (as applicable) ending 3/31/13, respectively. 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.
Overall
3 Year
5 Year
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10 Year
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Calamos’ Morningstar style box is based on the portfolio’s overall targeted capitalization range and relative valuation as determined by Calamos Investments.

Morningstar rated the Evolving World Growth A Fund among 356 Diversified Emerging Markets funds for the overall rating and the 3-year period (as applicable) ending 3/31/13, respectively. 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.