Calvert Short Duration Income Fund Wins 2013 Lipper Fund Award

Fund Outperforms Its Peers for 10-Year Period

BETHESDA, Md.--(BUSINESS WIRE)--Calvert today announced that the Calvert Short Duration Income Fund Class A Shares (CSDAX) was awarded the 2013 Lipper Fund Award for the best-performing fund among 108 funds in the Short Investment-Grade Funds A Rated classification for the 10-year period ended December 31, 2012. The Fund, with approximately $2 billion in assets under management, is managed by an investment team led by Matt Duch.

“We are happy to receive this prestigious award”

“The Lipper Award acknowledges the Fund’s excellent performance,” said Matt Duch, Lead Portfolio Manager. “Its investment approach has proven itself in the face of many market challenges over the past several years. The Fund’s sector allocations, security selections and duration targets - along with an active trading approach - have all contributed to its outperformance. ”

The Calvert Short Duration Income Fund is a short-term, investment-grade bond fund managed by Calvert Investment Management, Inc. that employs an active management strategy to identify relative value investments that assist in earning incremental income. The Fund aims to maximize income and preserve capital, by investing in short-term bonds and income-producing securities. Read the most recent portfolio commentary on the Fund.

“We are happy to receive this prestigious award,” said Cathy Roy, Senior Vice President and Chief Investment Officer of Fixed Income. “Matt Duch and the taxable fixed income team’s investment style, which emphasizes maximizing income while preserving capital, have helped drive award-winning performance.”

Calvert Investments is the leading investment management company using sustainability as a platform to create value. Serving financial advisors and their clients, retirement plans and insurance carriers, and institutional investors, the company offers a broad array of equity, bond, cash and asset allocation strategies, many of which feature integrated environmental, social, and governance (ESG) research and corporate engagement. Strategies are available through mutual funds, subadvisory services, and separate account management. Founded in 1976 and headquartered in Bethesda, Maryland, Calvert Investments had more than $12 billion in assets under management as of March 12, 2013. www.Calvert.com

Lipper Fund Awards are granted annually to the funds in each Lipper classification that achieve the highest score for Consistent Return, a measure of funds’ historical risk-adjusted returns, relative to peers. Scores for Consistent Return are computed for all Lipper global classifications with ten or more distinct portfolios. The scores are subject to change every month and are calculated over 36, 60 and 120–month periods. The highest 20% of funds in each classification are named Lipper Leaders for Consistent Return. The highest Lipper Leader for Consistent Return within each eligible classification determines the fund classification winner over three, five, or ten years. Source: Lipper, a Thomson Reuters company.

Past performance is no guarantee of future results.

Bond funds are subject to interest rate risk and credit risk. When interest rates rise, the value of fixed-income securities will generally fall. An active trading style can result in higher turnover (exceeding 100%), may translate to higher transaction costs, may increase your tax liability, and may affect Fund performance.

For more information on any Calvert fund, please contact Calvert at 800.368.2748 for a free summary prospectus and/or prospectus. An investor should consider the investment objectives, risks, charges, and expenses of an investment carefully before investing. The summary prospectus and prospectus contain this and other information. Read them carefully before you invest or send money.

Calvert mutual funds are underwritten and distributed by Calvert Investment Distributors, Inc., member FINRA and subsidiary of Calvert Investments, Inc. (3/13, 12998).