Calamos Global Convertible Fund - Four Decades of Calamos Convertible Experience Applied Globally - Calamos Investments

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Calamos Global Convertible Fund - Four Decades of Calamos Convertible Experience Applied Globally - Calamos Investments
Calamos Global Convertible Fund
Four Decades of Calamos Convertible Experience Applied Globally

 MARCH 2018
Calamos Global Convertible Fund - Four Decades of Calamos Convertible Experience Applied Globally - Calamos Investments
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 their investment objectives. 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 have 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 Global Convertible Fund include: convertible securities risk consisting of the potential for a decline in value during
periods of rising interest rates and the risk of the borrower to miss payments, synthetic convertible instruments risk consisting of fluctuations inconsistent with a
convertible security and the risk of components expiring worthless, foreign securities risk, emerging markets risk, equity securities risk, growth stock risk, interest
rate risk, credit risk, high yield risk, forward foreign currency contract risk, portfolio selection risk, and liquidity 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.

Total return assumes reinvestment of dividends and capital gains distributions and reflects the deduction of any sales charges, where applicable. Performance
may reflect the waiver of a portion of the Fund's advisory or administrative fees for certain periods since the inception date. If fees had not been waived,
performance would have been less favorable.

Source ICE Data Indices, LLC, used with permission. ICE permits use of the ICE BofAML indices and related data on an ‘as is’ basis, makes no warranties regarding
same, does not guarantee the suitability, quality, accuracy, timeliness, and/or completeness of the ICE BofAML Indices or data included in, related to, or derived
therefrom, assumes no liability in connection with the use of the foregoing and does not sponsor, endorse or recommend Calamos Advisors LLC or any of its
products or services.

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 | May Lose Value | No Bank Guarantee

Calamos Financial Services LLC, Distributor
2020 Calamos Court | Naperville, IL 60563-2787
800.582.6959 | www.calamos.com | caminfo@calamos.com
©2018 Calamos Investments LLC. All Rights Reserved.
Calamos® and Calamos Investments® are registered trademarks of Calamos Investments LLC.

                                                                                                                                                                            2
Calamos Global Convertible Fund - Four Decades of Calamos Convertible Experience Applied Globally - Calamos Investments
Agenda Topics

Overcoming Global Investment Challenges
  » Volatility
  » An eventual rise in interest rates

Realizing Global Investment Opportunities
  » Risk-managed equity exposure throughout market cycles
  » Resilience during rising interest rates
  » Potential to strengthen portfolios
  » Global convertible issuance surges
  » Convertibles: A breadth of opportunity
  » Convertibles and active management

Product Profile

Summary

                                                            3
Calamos Global Convertible Fund - Four Decades of Calamos Convertible Experience Applied Globally - Calamos Investments
Overcoming Global Investment Challenges
Convertibles May Provide a More Comfortable Way to Invest in Volatile Markets

                 Evidence Suggests Retail Investors Are Unlikely to Hold Equities Through Full Market Cycles
                           Domestic Equity Mutual Fund Flows (TTM)                             S&P 500 Mo. End Price

                                                                                                                                                                                                                       2500
                  200,000

                                                                                                                                 Retail Investors Absent
                  150,000                                                                                                                                                                                              2200
                                                                                                                                 During Market Rally
                  100,000
                                                                                                                                                                                                                       1900
New Flows ($M)

                   50,000

                                                                                                                                                                                                                              S&P 500 Index
                                                                                                                                                                                                                       1600
                          0

                  -50,000                                                                                                                                                                                              1300

                 -100,000
                                                                                                                                                                                                                       1000

                 -150,000
                                                                     Retail Selling Was                                                                                                                                700
                 -200,000                                            High at Bottom

                 -250,000                                                                                                                                                                                              400
                                 2001       2002       2003       2004       2005       2006       2007       2008       2009       2010       2011       2012       2013       2014       2015       2016      2017

                 Source: Van Etten. Net Asset flows represented by U.S. Open-end Domestic Equity Morningstar Funds. The market data presented herein is for informational purposes only. Data as of 12/31/17.
                                                                                                                                                                                                                                 5
AS OF 3/31/18

  Challenge: An Eventual Rise in Interest Rates

When interest rates rise, bond prices generally fall, and fixed-income investments often underperform.

  RETURNS IN RISING INTEREST RATE ENVIRONMENTS
                                         1/18/96-          10/5/98-         11/7/01-         6/13/03-          6/1/05-         12/30/08-         10/7/10-        7/26/12-          7/8/16-
                                         6/12/96           1/20/00           4/1/02          6/14/04           6/28/06          6/10/09           2/8/11         12/27/13         12/16/16

  YIELD INCREASE (bps)*                     150               263              122              176               134              187              134              157              123

  S&P 500 Index                           11.42%            46.59%            3.07%           14.66%            6.71%            9.41%            14.89%           42.09%           8.65%

  Bloomberg Barclays Capital
  U.S. Government Credit                   -4.08%           -3.38%           -3.09%            -3.64%           -1.49%           -2.08%           -3.94%           -2.14%           -4.88%
  Index
  *10-year Treasury yield. Performance shown is cumulative.
  Sources: Morningstar and Bloomberg

  Performance data quoted represents past performance, which is no guarantee of future results. Current performance may be lower or higher than the performance quoted. Indexes are
  unmanaged, do not reflect fees or expenses and are not available for direct investment. See last page for index definitions. Source: Morningstar Direct and Bloomberg. Most recent data as of
  3/31/18. Rising rate environment periods from troughs to peak from October 1993 to December 2017. The indexes shown are not intended as proxies for the Fund’s actual performance and may
  differ significantly once the Fund has a performance history.

                                                                                                                                                                                                  6
Realizing Global Investment Opportunities
AS OF 3/31/18

Opportunity: Risk-Managed Equity Exposure Throughout Market Cycles

Convertibles have historically offered equity-like returns with less volatility
» At Calamos, our emphasis on capital preservation sets us apart from passive strategies or investment managers who invest
  more heavily in speculative issues.
» Through the Fund, we endeavor to provide an asymmetrical risk/return profile with lower standard deviation and beta than
  the MSCI World Index, which means a smoother ride long term for investor portfolios.

                                          RISK AND REWARD: 10-YEAR PERIOD ENDED MARCH 2018
                                     13
                                     12
                                     11
     10-year Annualized Return (%)

                                     10
                                      9
                                                                                                                                    Over time, global convertibles
                                      8       ICE BofAML VG00 - Global 300                                                               have provided upside
                                      7                                           MSCI WORLD INDEX                                  participation in equity markets
                                      6
                                                                                                                                       with notably less volatility
                                      5
                                      4                                                                                              than an equity-only portfolio.
                                      3
                                      2
                                      1
                                      0
                                          0        4       8       12        16        20     24     28      32
                                                                   10-Year Volatility (%)

Past performance is not a guarantee of future returns.
Source: Russell and State Street Corporation. Data from the 10-year period from 3/31/08 to 3/31/18. Stocks are represented by the MSCI World Index and convertible securities are represented by the ICE BofAML G300
Index (VG00). The indexes shown are not intended as proxies for the Fund’s actual performance and may differ significantly once the Fund has a performance history.
                                                                                                                                                                                                                       8
AS OF 3/31/18

Opportunity: Resilience During Rising Interest Rates

Over the past 20 years when the 10-year Treasury yield rose more than 100 basis points, convertibles
have tended to perform more like equities than bonds

RETURNS IN RISING INTEREST RATE ENVIRONMENTS

                                       1/18/96-         10/5/98-         11/7/01-        6/13/03-          6/1/05-        12/30/08-         10/7/10-        7/26/12-          7/8/16-
                                       6/12/96          1/20/00           4/1/02         6/14/04           6/28/06         6/10/09           2/8/11         12/27/13         12/16/16

YIELD INCREASE (bps)*                     150              263              122              176             134              187              134              157             123

ICE BofAML VXA0
                                        11.97%           68.85%           2.29%           11.49%            9.46%           24.68%           11.63%          35.49%            7.58%
Convertibles Index

S&P 500 Index                           11.42%           46.59%           3.07%           14.66%            6.71%            9.41%           14.89%          42.09%            8.65%

Bloomberg Barclays Capital
U.S. Government Credit                  -4.08%           -3.38%           -3.09%           -3.64%          -1.49%           -2.08%           -3.94%           -2.14%           -4.88%
Index

*10-year Treasury yield. Performance shown is cumulative.
Sources: Morningstar and Bloomberg

Performance data quoted represents past performance, which is no guarantee of future results. Current performance may be lower or higher than the performance quoted. Indexes are
unmanaged, do not reflect fees or expenses and are not available for direct investment. See last page for index definitions. Source: Morningstar Direct and Bloomberg. Most recent data as of
3/31/18. Rising rate environment periods from troughs to peak from October 1993 to March 2018. The indexes shown are not intended as proxies for the Fund’s actual performance and may
differ significantly once the Fund has a performance history.

                                                                                                                                                                                                9
AS OF 3/31/18

Opportunity: Global Convertible Issuance

» Global convertible issuance in 2018 YTD is ahead of last year’s pace, totaling $27.8 billion as of 3/31/18.
» We anticipate attractive issuance trends in 2018, as appetite for risk assets remains high and companies seek new capital
  growth in an expanding economy.

Past performance is no guarantee of future results. *Convertible Market size is represented by the sum of the market capitalization of the ICE BofAML regional convertible indices.
In 2015, ICE BofA ML Convertible Research began using pricing from third party data providers. Names that are not priced by those providers have been removed. Source: ICE BofA ML Convertible Research, VG00 Index. The
ICE BofAML Global 300 Convertible Index is a global convertible index composed of companies representative of the market structure of countries in North America, Europe and the Asia/Pacific region.
                                                                                                                                                                                                                    10
AS OF 3/31/18

Opportunity: The Potential for Diversification

The convertible universe offers diversification both geographically and across sectors

                                    GEOGRAPHICAL DIVERSIFICATION                                                                              SECTOR DIVERSIFICATION
                                     ICE BofAML VG00 - Global 300                                                                           ICE BofAML VG00 - Global 300

                                                 Caribbean, 0.4%                                                                                                Consumer
                                                                                                                                            Utilities, 4.4%
              Middle East/Africa, 1.2%                                                                                                                        Staples, 2.7%
                                                                Latin America                                                  Telecom
                                                                     0.2%                                                   Services, 5.1%

                                                                                                              Materials, 5.3%                                       Information
                                     Asia/Pacific,                                                                                                                  Technology,
                                        18.1%                                                                                                                          23.2%
                                                                      North America,                         Energy, 5.6%
                                                                          53.5%

                                                                                                                                                                                Consumer
                                                                                                                                                                              Discretionary,
                                  Europe, 26.7%                                                            Real Estate, 7.6%                                                      12.9%

                                                                                                                                            Health Care,              Financials,
                                                                                                                                              12.8%                     10.8%
                                                                                                                                                     Industrials, 9.7%

The indexes shown are not intended as proxies for the Fund’s actual portfolio characteristics and may differ significantly from the Fund.

                                                                                                                                                                                                        11
Opportunity: Convertibles and Active Management

Active management of convertibles may help to identify the best total-return possibilities.
» Convertible securities vary in their levels of equity- and fixed-income sensitivity.
» Passive strategies cannot adjust to the changes in an individual convertible let alone the convertible universe as a whole.
» Calamos has actively managed global convertible portfolios for institutional clients since 2001.
        Distressed            Yield Alternatives                    Total Return                              Equity Alternatives
                                Fixed Income                        Alternatives                              Equity Characteristics
                               Characteristics                  Hybrid Characteristics

                                                                                                                                                   “Total-return” convertibles
           Convertible Fair Value Price Track
                                                                                                                                                  can offer a compelling blend
                                                                                                                                                   of equity and fixed-income
                                                                                                       Investment Value (Bond)
                                                                                                                                                             features

                                                          CURRENT STOCK PRICE

A convertible bonds is at a "distressed" valuation when it is worth significantly less than the theoretical value of a similar non-convertible bond and is highly sensitive to changes in the underlying equity
price. A convertible bond has "fixed income characteristics" when it is valued at about the same level as a similar non-convertible bond and is not as sensitive to the underlying equity. A convertible
bond has "hybrid characteristics" when it has fixed income characteristics as previously explained but is becoming increasingly sensitive to changes in the underlying equity price. "Equity
characteristics" represents a convertible bond that is highly sensitive to movements in the underlying equity. Percentages shown represent the proportion of convertible bonds in the ICE BofAML, All
U.S. Convertibles Index (VXAO) which fall into each classification. Source: ICE BofAML, All U.S. Convertibles Index (VXA0).
                                                                                                                                                                                                            12
Calamos and Convertible Securities

CALAMOS: A PIONEER IN CONVERTIBLE INVESTING
  » Calamos has been using convertible securities since the 1970s to manage risk and returns
  » Experience includes using convertibles to support lower-volatility equity and enhanced
    fixed income objectives
  » Convertibles have varied and changing characteristics; active management is essential

CHARACTERISTICS OF CONVERTIBLE SECURITIES
  » Equity-linked securities that combine attributes of equities and fixed-income securities
  » Upside equity participation with downside protection potential
  » Benefit from volatility
  » Fixed-income characteristics: all attributes of a bond or preferred stock; interest
    payment/dividend and bond maturity date
  » Equity characteristics: embedded option allows convertibles to be exchanged into a
    specific number of shares of common stock, at the option of the holder
  » Convertible issuance supported by economic growth

                                                                                               13
Calamos Global Convertible Fund Profile
Overview – Calamos Global Convertible Fund

Objective
     » The Fund seeks total return through capital appreciation and current income. Benchmarks: ICE BofAML VG00 -
       Global 300 | MSCI World Index.

Investment strategy
     » Top-down, global macroeconomic analysis helps identify the countries, sectors, industries and companies we
       believe will offer the greatest investment value and growth potential.
     » Bottom-up analysis encompasses comprehensive capital structure research, including proprietary equity, credit
       and convertible analysis.
     » We endeavor to provide a lower-volatility, asymmetrical risk/return profile, which should translate to lower
       standard deviation and beta than the MSCI World Index.

There is no guarantee that the Fund will achieve its investment objective.
                                                                                                                       15
Overview – Calamos Global Convertible Fund

A Potential Solution to Overcome Global Investment Challenges
  » Offers the opportunity for upside participation in equity markets with less exposure to downside than an equity-only
    portfolio over a full market cycle
  » Potential resilience from future interest rate increases
  » Provides broadly diversified exposure to the global convertible bond universe

From a Trusted Leader in Convertible Securities Investing
  » Leverages more than 40 years of research in convertible security investing
  » Experience in using convertibles to support lower-volatility and enhanced fixed-income objectives
  » Applies an active approach to manage the changing characteristics of convertibles

                                                                                                                           16
AS OF 3/31/18

Fund Information – Calamos Global Convertible Fund

                                                                            A SHARES                                   C SHARES                                     I SHARES

  INCEPTION DATE                                                          12/31/2014                                  12/31/2014                                  12/31/2014

  TICKER SYMBOL                                                               CAGCX                                      CCGCX                                       CXGCX

  CUSIP NUMBER                                                             128120748                                  128120730                                   128120722

  MINIMUM INITIAL/SUBSEQUENT
                                                                           $2,500/$50                                 $2,500/$50                                 $1 million/$0
  INVESTMENT

  IRA INITIAL INVESTMENT                                                       $500                                        $500                                        N/A

  SALES LOAD/MAXIMUM SALES CHARGE                                      Front-End/2.25%                            Level-Load/1.00%                                     N/A

  GROSS EXPENSE RATIO (ESTIMATED)+                                            1.46%                                       2.20%                                       1.19%

  NET EXPENSE RATIO (ESTIMATED)*                                              1.36%                                       2.11%                                       1.11%

  DISTRIBUTIONS                                                                                    Quarterly dividends; annual capital gains

    For more information, please visit www.calamos.com or contact us at 800.582.6959.

*The Fund’s investment advisor has contractually agreed to reimburse Fund expenses through March 1, 2019 to the extent necessary so that Total Annual Fund Operating Expenses (excluding taxes, interest, short interest,
short dividend expenses, brokerage commissions, acquired fund fees and expenses and extraordinary expenses, if any) of Class A, Class C, Class I and Class R are limited to 1.35%, 2.10%, 1.10% and 1.60% of average net
assets, respectively. This agreement is not terminable by either party. As of prospectus dated 3/1/18.
†Prior to 2/28/17, the Fund had a maximum front-end sales charge of 4.75%.
                                                                                                                                                                                                                       17
AS OF 3/31/18

 Portfolio Characteristics – Global Convertible Fund
SECTOR WEIGHTINGS*                             NET ASSETS (%)                 ICE BofAML VG00 –                     CREDIT QUALITY ALLOCATION GLOBAL                                            ICE BofAML VG00 –
                                                                                Global 300 (%)                      OF BONDS1                CONVERTIBLE                                          GLOBAL 300 (%)
Information Technology                               22.6%                         23.2%                                                                              FUND (%)
Consumer Discretionary                                13.3                            12.9                          AAA                                                  7.9%                            0.1%
Financials                                            12.1                            10.8                          AA                                                    1.9                             0.8
Real Estate                                            8.9                             7.6                          A                                                     8.7                             9.8
Health Care                                            8.1                            12.8                          BBB                                                  14.1                            19.6
Industrials                                            8.0                             9.7                          BB                                                    9.9                             8.2
                                                                                                                    B                                                     4.8                             3.0
Treasury Bonds                                         7.5                             0.0
                                                                                                                    CCC and below                                         0.0                             1.8
Energy                                                 6.0                             5.6
                                                                                                                    Unrated Securities                                   52.8                            56.7
Materials                                              4.8                             5.3
                                                                                                                    Portfolio Turnover is the percentage of assets in a portfolio that changed or were reinvested into
Telecom Services                                       4.3                             5.1                          other holdings over a certain period, often a year; higher turnover indicates greater buying and selling
Utilities                                              0.9                             4.4                          activity. 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. Time to
Consumer Staples                                       0.0                             2.7                          Maturity refers to the weighted time to receive all future cash flows on a fixed-income security.
                                                                                                                    Duration measures the responsiveness of a bond’s price to interest rate changes.

PORTFOLIO STATISTICS                         GLOBAL                    ICE BofAML VG00 –
                                           CONVERTIBLE                     GLOBAL 300
# of Holdings                                 FUND
                                               151                                298
Time to Maturity                             2.93 years                      4.25 years
Investment Premium                             15.26%                          11.72%
Conversion Premium                             20.94%                          25.53%
Portfolio Turnover (12
months)                                        35.48%                             N/A

 *Sector weightings exclude cash or cash equivalents, any government/sovereign bonds or instruments on broad indexes the portfolio may hold. 1Bond Credit Quality- Reflects the higher of the ratings of Standard & Poor’s
 Corporation; Moody’s Investors Service, Inc. Ratings are relative, subjective and not absolute standards of quality, represent the opinions of the independent Nationally Recognized Statistical Rating Organizations (NRSRO),
 and are adjusted to the Standard & Poor’s scale shown. Ratings are measured using a scale that typically ranges from AAA (highest) to D (lowest. Additional information on ratings methodologies are available by visiting
 the NRSRO websites: www.standardandpoors.com, www.moodys.com, www.fitchratings.com. Please see appendix for definitions.
                                                                                                                                                                                                                               18
AS OF 3/31/18

Portfolio Characteristics – Global Convertible Fund

GEOGRAPHIC REGIONS                            NET ASSETS (%)                                  TOP 5 COUNTRIES                       NET ASSETS (%)
                                                   49.3%                                     United States                                49.3%
North America
                                                                                             France                                         9.1
Europe                                              30.4
                                                                                             Germany                                        7.0
Asia/Pacific                                        16.0                                     Japan                                          5.8
Middle East/Africa                                   0.8                                     Netherlands                                    5.7

TEN LARGEST HOLDINGS*
COMPANY                                           INDUSTRY                                                    SECURITY DESCRIPTION                      COUNTRY                         NET ASSETS (%)
United States Treasury Note                        Other                                                                                                United States                           3.1%
United States Treasury Note                        Other                                                                                                United States                            2.9
Bank of America Corp.                              Diversified Banks                                            7.25% Cv Pfd                            United States                            2.6
Wells Fargo & Company                              Diversified Banks                                            7.50% Cv Pfd                            United States                            2.4
Corestate Capital Holding, SA                      Real Estate Operating Companines                             1.38% Cv Due 2022                       Luxembourg                               2.4
Salesforce.com, Inc.                               Application Software                                         0.25% Cv Due 2018                       United States                            2.3
America Movil, SAB de CV                           Integrated Telecommunication Services                        0% Cv Due 2020                          Netherlands                              2.2
Citrix Systems, Inc.                               Application Software                                         0.50% Cv Due 2019                       United States                            1.9
Safran, SA                                         Aerospace & Defense                                          0% Cv Due 2020                          France                                   1.9
Altaba, Inc.                                       Internet Software & Services                                 0% Cv Due 2018                          United States                            1.8

*Ten Largest Holdings exclude cash or cash equivalents, any government/sovereign bonds or broad based index hedging securities the portfolio may hold. 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.
                                                                                                                                                                                                                      19
AS OF 3/31/18

 Performance – Global Convertible Fund

ANNUALIZED RETURNS

         Calamos Global Convertible Fund - A Shares at NAV (12/31/14)*                                                          Calamos Global Convertible Fund - A Shares Load-Adjusted
         Calamos Global Convertible Fund - I Shares (12/31/14)                                                                  ICE BofAML VG00 - Global 300
         MSCI World Index
 16%
                                                     14.30%14.13%
 14%

                  11.47%                 11.70%
 12%

 10%                           8.93%
                                                                                                                                 8.35% 8.56%                                                                8.41% 8.68%
  8%

  6%                                                                                                                                                                      5.36%                  5.63%
                                                                                              4.68%                  4.97%
                                                                                                                                                                                     3.79%
  4%                                                                                                      2.98%

  2%

  0%
                                          1-Year                                                                     3-Year                                                               Since Inception

 Gross expense ratios are 1.46% for A shares and 1.19% for I shares as of the prospectus dated 3/1/2018. 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 of an investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost. A Shares
 at NAV returns do not include the fund's maximum 2.25% front-end sales load.* Had it been included returns would have been lower. You can obtain performance data current to the most recent month end by visiting
 www.calamos.com. *Prior to 2/28/17, the Fund had a maximum front-end sales charge of 4.75%.
 Class I shares are offered primarily for direct investment by investors through certain tax-exempt retirement plans and by institutional clients, provided such plans or clients have assets of at least $1 million. For eligibility
 requirements and other available share classes see the prospectus and other Fund documents as www.calamos.com. Returns greater than 12 months are annualized. Annualized 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. In calculating net investment income, all applicable fees and
 expenses are deducted from the returns. 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. Please see “Important Risk Information” section of this presentation for additional risk disclosures and the
 Appendix for index definitions. Source: State Street Corporation and Mellon Analytical Solutions, LLC.
                                                                                                                                                                                                                                    20
Summary

Convertible securities are well suited to this environment
  » Actively managed allocations that include convertibles may prove beneficial because convertibles combine attributes
    of stocks and bonds.

  » Convertible securities can provide participation in stock market upside with potential protection if stocks experience
    periods of downside volatility.

  » Convertibles have tended to be more resilient to rising interest rates than traditional fixed-income securities.

  » We are encouraged by issuance trends, as economic growth has historically provided a catalyst for convertible issuance.

Calamos Global Convertible Fund: deep experience applied worldwide
  » Calamos has managed global convertible portfolios for our institutional clients since 2001; we are pleased to bring this
    experience to bear on this mutual fund.

  » The fund is actively managed – allying global top-down views with bottom-up analysis – with the intent to select
    convertible securities of companies we believe offer the greatest investment value and growth potential in the world.

                                                                                                                             21
Definitions

When we discuss volatility, our focus is on the variation of returns in our equity Funds versus a full equity benchmark such as the MSCI World Index.
We consider a fund to have lower volatility when its beta versus the equity benchmark is less than one. Beta is an historic measure of a fund’s
relative volatility, which is one of the measures of risk. For example, a beta of 0.5 reflects half of the market’s volatility versus the index, while a
beta of 2.0 would indicate twice the volatility of the index. From this perspective, the fund has a lower risk profile than its benchmark. There is no
assurance that a fund will achieve or deliver low volatility results.

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. The ICE
BofAML Global 300 Convertible Index is a global convertible index composed of companies representative of the market structure of countries in
North America, Europe and the Asia/Pacific region. The MSCI World Index Is a market capitalization weighted index composed of companies
representative of the market structure of developed market countries in North America, Europe, and Asia/Pacific region. The Bloomberg Barclays
Capital U.S. Aggregate Bond Index covers the U.S.-denominated, investment-grade, fixed-rate, taxable bond market of SEC registered securities.
The index includes bonds from the Treasury, Government-Related, Corporate, MBS (agency fixed-rate and hybrid ARM pass-throughs), ABS, and
CMBS sectors. The Bloomberg Barclays Capital U.S. Government/Credit Bond Index comprises long-term government and investment-grade
corporate debt securities and is generally considered representative of the performance of the broad U.S. bond market. Unlike convertible bonds,
U.S. Treasury bills are backed by the full faith and credit of the U.S. government and offer a guarantee as to the timely repayment of principal and
interest. The S&P 500 Index is generally considered representative of the U.S. stock market. The ICE BofAML All U.S. Convertibles Ex Mandatory
Index (V0A0) is broadly representative of the U.S. convertible securities market, consisting of publicly traded issues, denominated in U.S. dollars, of
all credit qualities, and excluding mandatory (equity-linked) convertibles. The ICE BofAML Corporate & Government Master Index measures total
return on taxable U.S. corporate and government bonds, including price and interest income, based on the total mix of these bonds in the market.
This index is often used as reference for the performance of a taxable corporate and government bond mix.

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. Securities and sectors mentioned are presented to illustrate securities and sectors in which the Fund
may invest. Portfolio holdings are subject to change daily. The Fund is actively managed. Past performance is no guarantee of future results.

                                                                                                                                                        22
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