RISK MEASURES (3-Year)As of 3/31/2013
  FUND BENCHMARK
STANDARD DEVIATION 17.09% 16.87%
ALPHA 2.38% 0.00%
BETA 0.99 1.00
EXCESS RETURN 2.38% 0.00%
R-SQUARED 94.60% 100.00%
TRACKING ERROR 3.98% 0.00%
INFORMATION RATIO 0.60 0.00
SHARPE RATIO 0.63 0.50
MARKET CAPITALIZATIONAs of 3/31/2013 ($ Millions)
  FUND BENCHMARK
Weighted Average 5,528.5 3,622.6
Median 2,069.8 1,114.1
Weighted Median 4,011.6 2,083.6
TOP HOLDINGSAs of 3/31/2013
Holding % of Net Assets
EBARA CORP 5.93%
SEVERN TRENT PLC 5.88%
KURITA WATER INDUSTRIES LTD 5.63%
SUEZ ENVIRONNEMENT CO 5.62%
PENTAIR LTD REGISTERED 5.60%
SPX CORP 5.53%
GARDNER DENVER INC 4.55%
UNITED UTILITIES GROUP PLC 4.40%
XYLEM INC 4.30%
FLOWSERVE CORP 3.83%
Total 51.28%
ASSET ALLOCATION% of assets as of 3/31/2013
  Equity Fixed Income Cash
Calvert Global Water Fund 92.81% 0.00% 7.19%
VALUATIONKey Portfolio Statistics as of 3/31/2013
  1 YEAR P/E 3 YEAR EPS GROWTH RETURN ON
EQUITY
PRICE TO
CASH FLOW
PRICE TO
BOOK
Dividend
Yield
PROJECTED TRAILING PROJECTED TRAILING
Calvert Global Water Fund 16.2 18.9 10.3% 21.4% 10.5% 8.7 1.7 2.1
S-Network Global Water Index 16.0 18.9 10.4% 9.5% 11.8% 8.7 1.7 2.6
PERFORMANCE Average Annual Returns (%) for Period Ended 3/31/2013
  QTR YTD 1 YEAR 3 YEARS 5 YEARS 10 YEARS SINCE
INCEPTION
INCEPTION
DATE
A Shares (NAV) 8.77 8.77 18.96 10.91 n/a n/a 8.76 9/30/2008
S-Network Global Water Index 7.72 7.72 16.33 8.63 3.73 14.29 7.53  
Lipper Global Natural Resources Funds Index 3.75 3.75 -0.36 0.77 -4.17 12.36 1.15  
PERFORMANCE ATTRIBUTIONRelative to the S-Network Global Water Index for the quarter ending 3/31/2013
Performance Attribution Chart
TOP CONTRIBUTORS BY SECTORQuarter ended 3/31/2013
Sector Average Weight Return Contribution
Industrials 56.84% 10.09% 5.75%
Utilities 28.74% 7.79% 2.28%
Materials 5.16% 22.46% 1.19%
Consumer Discretionary 1.66% 11.30% 0.22%
Health Care 1.83% 2.81% 0.16%
TOP CONTRIBUTORS BY HOLDINGQuarter ended 3/31/2013
Holding Average Weight Return Contribution
Calgon Carbon Corp. 3.38% 27.64% 0.97%
SPX Corp. 6.53% 12.91% 0.89%
China Everbright International Ltd. 2.02% 40.24% 0.79%
Flowserve Corp. 4.17% 14.53% 0.66%
Gardner Denver Inc. 5.98% 9.72% 0.62%
BOTTOM CONTRIBUTORS BY SECTORQuarter ended 3/31/2013
Sector Average Weight Return Contribution
Consumer Staples 0.00% 0.00% 0.00%
Energy 0.00% 0.00% 0.00%
Telecomm Services 0.00% 0.00% 0.00%
Financials 1.47% 9.52% 0.14%
Information Technology 4.30% 3.06% 0.16%
BOTTOM CONTRIBUTORS BY HOLDINGQuarter ended 3/31/2013
Holding Average Weight Return Contribution
Ebara Corp. 6.07% -4.93% -0.23%
United Utilities Group PLC 3.65% -2.02% -0.06%
Tri-Tech Holding Inc. 0.11% -23.64% -0.04%
Organo Corp. 1.56% -0.58% -0.01%
Sound Global Ltd. 0.38% 2.12% -0.01%
REGIONSas of3/31/2013
Region % of Portfolio Benchmark
North America 55.96% 47.45%
Pacific Rim 17.38% 23.03%
South America 3.30% 5.61%
Western Europe 23.37% 23.90%
COUNTRIESas of 3/31/2013
Country % of Portfolio Benchmark
Brazil 3.30% 3.95%
Canada 2.73% n/a
Cayman Islands n/a 1.06%
Chile n/a 1.66%
China 0.08% 2.43%
Finland n/a 0.80%
France 6.94% 4.13%
Germany 0.42% n/a
Greece n/a 1.36%
Hong Kong 2.19% 5.21%
Italy n/a 2.44%
Japan 13.17% 4.64%
Malaysia n/a 0.25%
Netherlands 1.31% 2.22%
Philippines 1.08% 1.74%
Singapore n/a 2.35%
South Korea 0.87% 4.79%
Switzerland 4.17% 5.41%
Thailand n/a 1.63%
United Kingdom 10.53% 7.55%
United States 53.22% 46.39%
ANALYSIS By Kleinwort Benson Investors International Ltd (Sub-Advisor)

The Fund’s overweight position in the Infrastructure sub-sector as well as strong overall stock selection helped it outperform its benchmark. In particular, the Fund benefited from strength in Chinese water stocks and late-cycle Infrastructure stocks. Infrastructure was the best-performing sub-sector during the first quarter, with strong returns coming from Chinese water companies Beijing Enterprises Water and China Everbright. China continued to commit to significant increases in wastewater treatment, water reuse, and desalination capacity. Other strong performers were Aecom Technology and Weir, both of which were sold after major gains from last summer. The Fund also benefited from capital markets activity in the Infrastructure sub-sector as Gardner Denver received a formal bid to go private and Ebara did a secondary offering to fund pump service centers around the world.

Notable overweight positions within the Water Technology sub-sector were Calgon Carbon, Danaher, and Kurita Water Industries. Shares in Calgon Carbon gained over 25% for the quarter, reflecting positive earnings and progress in cost reductions. Danaher also performed strongly in concert with other U.S. Industrials stocks. Japanese ultrapure water company Kurita underperformed (albeit producing positive returns) on the back of currency-related weakness.

The Fund’s underweight to the Utilities sub-sector was a positive as Utilities struggled during the first quarter. Many U.S. and emerging-market water utilities had strong results, but this was offset by more-modest performance for the U.K. utilities and by currency issues associated with the weak British pound. More broadly, the Fund’s focus on companies that have aggressively positioned themselves for a low-growth environment paid off, as many Fund holdings performed well against modest expectations. This trend has meant stronger attention to cost efficiencies, higher investment in research and development, and disciplined capital allocation strategies. These “self-help” moves prepare the companies for economic weakness while potentially enhancing their earnings power in a better-than-forecast scenario.

10 BEST PERFORMERS FOR THE QUARTER as of 3/31/2013
Rank Company Industry Return
1 China Everbright International Ltd. Industrials 40.24%
2 GWR Global Water Resources Corp. Utilities 33.78%
3 AECOM Technology Corp. Industrials 32.02%
4 Calgon Carbon Corp. Materials 27.64%
5 Manila Water Co. Inc. Utilities 25.59%
6 Joyou AG Industrials 23.19%
7 Uponor Oyj Industrials 16.09%
8 Tetra Tech Inc. Industrials 15.27%
9 Beijing Enterprises Water Group Ltd. Utilities 14.94%
10 Flowserve Corp. Industrials 14.53%
10 WORST PERFORMERS FOR THE QUARTER as of 3/31/2013
Rank Company Industry Return
1 Tri-Tech Holding Inc. Utilities -23.64%
2 Ebara Corp. Industrials -4.93%
3 Rexnord Corp Industrials -4.08%
4 United Utilities Group PLC Utilities -2.02%
5 Ashland Inc. Materials -0.83%
6 Organo Corp. Industrials -0.58%
7 Pure Technologies Ltd. Information Technology 1.00%
8 Severn Trent PLC Utilities 1.40%
9 Kurita Water Industries Ltd. Industrials 1.66%
10 Xylem Inc. Industrials 2.12%

As of March 31, 2013, Calvert Global Water Fund’s holdings included Beijing Enterprises Water (1.22% of Fund assets), China Everbright (0.81%), Aecom Technology (0.00%), Weir (0.00%), Gardner Denver (4.55%), Ebara (5.93%), Calgon Carbon (1.72%), Danaher (1.90%), and Kurita Water Industries (5.63%). Calvert may or may not still invest in, and is not recommending any action on, companies listed. For the most recently available information on individual holdings in each Calvert fund, visit www.calvert.com/fundHoldings.html. Current and future portfolio holdings are subject to market risk.

Investment in mutual funds involves risk, including the possible loss of principal invested. The Fund is subject to the risk that stocks that comprise the water-related sector may fall in value. The water industry can be significantly affected by a number of factors, including availability of water, the level of rainfall, water consumption, price and supply fluctuations, and government regulations and policies. A downturn in the water-related resource sector would impact the Fund more than a fund that does not concentrate in this industry, and the Fund therefore may be more volatile than a typical mutual fund. Foreign investments involve greater risks than U.S. investments, including political and economic risks and the risk of currency fluctuations. The Fund is nondiversified and may be more volatile than a diversified fund.

G200ATT FOR INSTITUTIONAL INVESTOR AND BROKER/DEALER USE ONLY. NOT FOR PUBLIC DISTRIBUTION.