RISK MEASURES (3-Year)As of 3/31/2013
  PORTFOLIO BENCHMARK
STANDARD DEVIATION 14.17% 15.34%
ALPHA 0.37% 0.00%
BETA 0.91 1.00
EXCESS RETURN -0.76% 0.00%
R-SQUARED 96.90% 100.00%
TRACKING ERROR 2.86% 0.00%
INFORMATION RATIO -0.27 0.00
SHARPE RATIO 0.85 0.84
MARKET CAPITALIZATIONAs of 3/31/2013 ($ Millions)
  PORTFOLIO BENCHMARK
Weighted Average 75,285.4 89,037.7
Median 31,816.0 6,057.0
Weighted Median 47,905.7 45,840.3
TOP HOLDINGSAs of 3/31/2013
Holding % of Net Assets
JPMORGAN CHASE + CO 4.24%
SYMANTEC CORP 4.06%
AT+T INC 4.01%
WELLS FARGO + CO 3.94%
GOLDMAN SACHS GROUP INC 3.91%
AMGEN INC 3.86%
TIME WARNER INC 3.83%
COCA COLA CO/THE 3.83%
TOYOTA MOTOR CORP SPON ADR 3.78%
CISCO SYSTEMS INC 3.77%
Total 39.22%
ASSET ALLOCATION% of assets as of 3/31/2013
  Equity Fixed Income Cash
Calvert Large Cap Core Portfolio 92.89% 0.00% 7.11%
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 Large Cap Core Portfolio 13.0 14.2 11.1% 14.8% 18.7% 8.2 2.0 2.1
Russell 1000 Index 14.5 15.9 10.9% 27.3% 18.2% 10.0 2.4 2.1
PERFORMANCE Average Annual Returns (%) for Period Ended 3/31/2013
  QTR YTD 1 YEAR 3 YEARS 5 YEARS 10 YEARS SINCE
INCEPTION
INCEPTION
DATE
I Shares 12.00 12.00 14.74 12.16 5.85 7.18 3.97 4/15/1998
Russell 1000 Index 10.96 10.96 14.43 12.93 6.15 8.97 4.49  
Lipper Large-Cap Core Funds Index 10.54 10.54 14.00 11.13 5.09 7.54 3.49  
PERFORMANCE ATTRIBUTIONRelative to the Russell 1000 Index for the quarter ending 3/31/2013
Performance Attribution Chart
TOP CONTRIBUTORS BY SECTORQuarter ended 3/31/2013
Sector Average Weight Return Contribution
Consumer Discretionary 18.83% 13.51% 2.52%
Consumer Staples 13.07% 18.07% 2.29%
Health Care 13.31% 15.52% 2.04%
Financials 20.25% 9.41% 1.99%
Information Technology 13.95% 13.88% 1.93%
TOP CONTRIBUTORS BY HOLDINGQuarter ended 3/31/2013
Holding Average Weight Return Contribution
Symantec Corp. 4.14% 31.21% 1.17%
Time Warner Inc. 3.93% 21.13% 0.79%
Amgen Inc. 3.74% 19.41% 0.71%
Goldman Sachs Group Inc. 4.39% 15.75% 0.69%
General Mills Inc. 3.12% 23.00% 0.68%
BOTTOM CONTRIBUTORS BY SECTORQuarter ended 3/31/2013
Sector Average Weight Return Contribution
Materials 0.00% 0.00% 0.00%
Utilities 0.00% 0.00% 0.00%
Energy 5.21% 11.72% 0.61%
Industrials 7.79% 9.15% 0.76%
Telecomm Services 7.59% 11.00% 0.84%
BOTTOM CONTRIBUTORS BY HOLDINGQuarter ended 3/31/2013
Holding Average Weight Return Contribution
Apple Inc. 0.88% -16.49% -0.18%
Capital One Financial Corp. 0.62% -5.06% -0.03%
Time Warner Cable Inc. 2.70% -0.42% -0.03%
AFLAC Inc. 0.28% -1.37% -0.01%
St. Jude Medical Inc. 0.19% 12.59% 0.02%
ANALYSIS By

Calvert Large Cap Core Portfolio outperformed the benchmark Russell 1000 Index during the quarter, due primarily to strong stock selection. Stock selection was particularly beneficial in the Information Technology and Consumer Staples sectors. A zero weighting to the Materials sector also added value relative to the benchmark as Materials was the market’s weakest sector in the first quarter.

In the Information Technology sector, an underweight to Apple was a major contributor to relative performance as the company struggled during the period. Symantec, a security and storage management company, was another Information Technology holding that lifted relative results with a significant gain. In the Consumer Staples sector, the Fund benefited from an overweight to food stocks Campbell Soup and General Mills, both of which were up more than 20% for the first quarter.

Among detractors, Financials firm Barclays posted disappointing results in the first quarter. The company was a strong performer in the fourth quarter of 2012 but slowed down significantly in the first quarter of 2013. While it produced a small gain in the quarter, it substantially lagged the benchmark.

10 BEST PERFORMERS FOR THE QUARTER as of 3/31/2013
Rank Company Industry Return
1 Symantec Corp. Information Technology 31.21%
2 Campbell Soup Co. Consumer Staples 30.01%
3 General Mills Inc. Consumer Staples 23.00%
4 Time Warner Inc. Consumer Discretionary 21.13%
5 Amgen Inc. Health Care 19.41%
6 Roche Holding AG ADS Health Care 19.36%
7 Omnicom Group Inc. Consumer Discretionary 18.72%
8 Viacom Inc. Cl B Consumer Discretionary 17.26%
9 Target Corp. Consumer Discretionary 16.36%
10 Goldman Sachs Group Inc. Financials 15.75%
10 WORST PERFORMERS FOR THE QUARTER as of 3/31/2013
Rank Company Industry Return
1 Apple Inc. Information Technology -16.49%
2 Capital One Financial Corp. Financials -5.06%
3 AFLAC Inc. Financials -1.37%
4 Time Warner Cable Inc. Consumer Discretionary -0.42%
5 Barclays PLC ADS Financials 3.65%
6 QEP Resources Inc. Energy 5.26%
7 Cisco Systems Inc. Information Technology 6.41%
8 FedEx Corp. Industrials 7.21%
9 DaVita HealthCare Partners Inc. Health Care 7.29%
10 Cummins Inc. Industrials 7.35%

As of March 31, 2013, Calvert Large Cap Core Portfolio’s holdings included Apple (0.74% of the Portfolio), Symantec (4.06%), Campbell Soup (2.10%), General Mills (3.11%), and Barclays (2.35%). 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 possible loss of principal invested. You could lose money on your investment in the Fund or the Fund could underperform because of the following risks: the market prices of stocks held by the Fund may fall; individual investments of the Fund may not perform as expected; and/or the Fund's portfolio management practices may not achieve the desired result. In addition, large-cap companies may be unable to respond quickly to new competitive challenges, such as changes in technology, and also may not be able to attain the high growth rate of successful smaller companies, especially during periods of economic expansion.

I800ATT FOR INSTITUTIONAL INVESTOR AND BROKER/DEALER USE ONLY. NOT FOR PUBLIC DISTRIBUTION.