Calamos U.S. Convertible Opportunities Fund is a sub-fund of Calamos Global Funds PLC, an investment company with variable capital incorporated with limited liability in Ireland (registered number 444463). Calamos Global Funds PLC has been established as an umbrella fund with segregated liability between sub-funds and is authorized pursuant to the European Communities (Undertakings for Collective Investment in Transferable Securities) Regulations 2003 as amended.

The Fund is offered solely to non-U.S. investors under the terms and conditions of the Fund's current prospectus. The prospectus contains important information about the Fund and should be read carefully before investing. A copy of the prospectus for the Fund may be obtained by clicking here, or by contacting the local Paying Agent listed by jurisdiction, or through the Fund's Transfer Agent, RBC Dexia Investor Services Ireland Limited, listed at:

RBC Dexia Investor Services Ireland Limited
Georges Quay House
43 Townsend Street
Dublin 2
Ireland
Tel: (353) 1 440 6555

Important Fund Information
In addition to market risk, there are certain other risks associated with an investment in a convertible bond, such as default risk, the risk that the company issuing debt securities will be unable to repay principal and interest, and interest rate risk, the risk that the security may decrease in value if interest rates increase.

The Fund may invest in mid-size and small companies which present greater risk and higher volatility than investments in larger, more established companies.

You should also know that the Fund may invest up to 25% of its assets in the securities of foreign issuers. 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.

NOTES

Alpha—Measures the difference between a portfolio's actual returns and its expected performance, given its level of risk relative to the underlying market (as measured by beta).

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.

Debt/Capital—Measures a company's debt in relation to its total capital.

PEG Ratio (price/earnings ratio divided by earnings growth rate)—A lower PEG indicates that less is being paid for each unit of earnings growth.

ROIC (return on invested capital)—Measures an investment's growth prospects; measures the percentage earned on invested capital.

S&P 500 Index—Is generally considered representative of the U.S. stock market.

Value Line Convertible Index—Is an equally weighted index of the largest convertibles, representing 90% of the market.

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.

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 Fund may seek to purchase index put options to help reduce downside exposure however, the effectiveness of the Fund’s index option-based risk management strategy may be reduced if the Fund’s equity portfolio does not correlate to the performance of the underlying option positions. The Fund also risks losing all or part of the cash paid for purchasing index options. Unusual market conditions or lack of a ready market of any particular option at a specific time may reduce the effectiveness of the Fund’s option strategies, and for these and other reasons the Fund’s option strategies may not reduce the Fund’s volatility to the extent desired. From time to time, the Fund may reduce its holdings of put options, resulting in an increased exposure to a market decline.

Top 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.calamosglobal.com.

Bond Credit Quality - Reflects the higher of the ratings of Standards & Poors Corporation; Moody’s Investors Service, Inc.; Fitch, Inc.; National Association of Insurance Commissioners (NAIC) as well as Calamos' proprietary credit scores and are adjusted to the scale shown. Ratings are relative, subjective and not absolute standards of quality. Excludes equity securities and cash.