Calvert for Institutional Investors
Mutual Fund Yields

Fund

Fund Yields as of 2/7/2012

Fund Average
Maturity		 7-Day
Current Yield 		7-Day
Effective Yield 		Taxable Equivalent Yields
@27% @30% @35%
Calvert Bond Portfolio-A Shares (CSIBX) 13 Years n/a n/a n/a n/a n/a
Calvert Bond Portfolio-B Shares (CBDBX) 13 Years n/a n/a n/a n/a n/a
Calvert Bond Portfolio-C Shares (CSBCX) 13 Years n/a n/a n/a n/a n/a
Calvert Bond Portfolio-I Shares (CBDIX) 13 Years n/a n/a n/a n/a n/a
Calvert Bond Portfolio-Y Shares (CSIYX) 13 Years n/a n/a n/a n/a n/a
Calvert Government Fund-A Shares (CGVAX) 7 Years n/a n/a n/a n/a n/a
Calvert Government Fund-C Shares (CGVCX) 7 Years n/a n/a n/a n/a n/a
Calvert Government Fund-I Shares (CVGIX) 7 Years n/a n/a n/a n/a n/a
Calvert High Yield Bond Fund-A Shares (CYBAX) 6 Years n/a n/a n/a n/a n/a
Calvert High Yield Bond Fund-C Shares (CHBCX) 6 Years n/a n/a n/a n/a n/a
Calvert High Yield Bond Fund-I Shares (CYBIX) 6 Years n/a n/a n/a n/a n/a
Calvert High Yield Bond Fund-Y Shares (CYBYX) 6 Years n/a n/a n/a n/a n/a
Calvert Income Fund-A Shares (CFICX) 18 Years n/a n/a n/a n/a n/a
Calvert Income Fund-B Shares (CBINX) 18 Years n/a n/a n/a n/a n/a
Calvert Income Fund-C Shares (CIFCX) 18 Years n/a n/a n/a n/a n/a
Calvert Income Fund-I Shares (CINCX) 18 Years n/a n/a n/a n/a n/a
Calvert Income Fund-R Shares (CICRX) 18 Years n/a n/a n/a n/a n/a
Calvert Income Fund-Y Shares (CIFYX) 18 Years n/a n/a n/a n/a n/a
Calvert Long-Term Income Fund-A Shares (CLDAX) 15 Years n/a n/a n/a n/a n/a
Calvert Short Duration Income Fund-A Shares (CSDAX) 9 Years n/a n/a n/a n/a n/a
Calvert Short Duration Income Fund-C Shares (CDICX) 9 Years n/a n/a n/a n/a n/a
Calvert Short Duration Income Fund-I Shares (CDSIX) 9 Years n/a n/a n/a n/a n/a
Calvert Short Duration Income Fund-Y Shares (CSDYX) 9 Years n/a n/a n/a n/a n/a
Calvert Tax-Free Bond Fund-A Shares (CTTLX) 12 Years n/a n/a n/a n/a n/a
Calvert Ultra-Short Income Fund-A Shares (CULAX) 5 Years n/a n/a n/a n/a n/a
Calvert Ultra-Short Income Fund-Y Shares (CULYX) 5 Years n/a n/a n/a n/a n/a
The performance data quoted represents past performance, which does not guarantee future results. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Current performance may be higher or lower than the performance data quoted. Indices reflect no deductions for fees or expenses. An investor cannot invest directly in an index. The performance does not reflect fees and charges imposed under the variable annuity and life insurance contracts through which an investment may be made. If these fees and charges were included, they would reduce these returns.

I102 (4/09)