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CSIF Bond Portfolio (CBDBX)

Daily Performance (as of 9/3/2010)
Price $15.80
Price Change $-0.04 (-0.25%)
YTD Return (% Sales Charge) 2.03%
YTD Return (No Charge) 6.03%
Average Maturity
(rounded to nearest year or day)		 8 Years
Daily 30-Day SEC Yield 1.00%
Fund Facts (as of 9/3/2010)
NASDAQ Symbol CBDBX (B Shares)
Calvert Fund Number 246 (B Shares)
CUSIP Number 131618837 (B Shares)
Assets Under Management $666.28 Million
Duration (as of 6/30/2010)
Effective Duration 3.00 Years

Overview

Fund Management

Calvert Asset Management Company, Inc.

Investment Objectives

The Fund seeks to provide as high a level of current income as is consistent with prudent investment risk and preservation of capital through investment in bonds and other straight debt securities meeting the Fund's investment and social criteria. 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 bonds may decline; the individual bonds in the Fund may not perform as well as expected; and/or the Fund’s portfolio management practices may not work to achieve their desired result. Bond funds are subject to interest rate risk and credit risk. When interest rates rise, the value of fixed-income securities will generally fall. In addition, the credit quality of the securities may deteriorate, which could lead to default or bankruptcy of the issuer where the issuer becomes unable to pay its obligations when due. The Fund is nondiversified and compared to other funds, may invest more of its assets in a smaller number of issuers, so that gains and losses on the bonds of a single issuer may have more impact on the Fund.

Investment Strategy

The Fund uses an active strategy, seeking relative value to earn incremental income. The Advisor's in-depth, primary credit analysis identifies bonds with attractive price-appreciation potential, specializing in uncovering issues with complex and unusual structures. The investment team maintains a flexible investment approach in order to seek profit from changing market conditions. Under normal circumstances, the Fund invests at least 80% of its net assets in fixed-income securities. At least 65% of the Fund’s net assets will be invested in investment grade debt securities rated A or above.

Important Disclosure

Class B shares of Calvert funds are no longer offered for new purchases.


Holdings are subject to change.


Performance

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Benchmark Index

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Lipper Category Index

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Average Annual Returns (%) for period ending 8/31/2010
Share Class YTD QTD 1 yr 3 yrs 5 yrs 10 yrs Since Inception Inception
B Shares (% Sales Charge) 2.90 -1.71 5.29 4.10 3.72 5.36 4.80 3/31/1998
B Shares (No Charge) 6.90 2.29 9.29 4.41 3.72 5.36 4.80 3/31/1998
Average Annual Returns (%) for period ending 6/30/2010
Share Class YTD QTD 1 yr 3 yrs 5 yrs 10 yrs Since Inception Inception
B Shares (% Sales Charge) 0.51 -1.69 6.61 3.84 3.35 5.27 4.67 3/31/1998
B Shares (No Charge) 4.51 2.31 10.61 4.15 3.35 5.27 4.67 3/31/1998
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.
Fund Expenses (from Prospectus)
(Performance data quoted above already reflects deduction for Fund operating expenses)
Expense Ratio
(if no waiver reimbursement in effect)		 Net Expense Ratio
(if waiver reimbursement in effect)		 Gross Expense Ratio
(if waiver reimbursement in effect)
2.13% n/a n/a
Fund Yields
Daily 30-Day SEC Yield: 1.00%

Hypothetical Growth of $10,000

Yearly Percentage Return

Pricing & Distribution

Most Recent Distributions

B Shares: Without Sales Charge
Date Type Rate Record Date Ex Date Reinvest Date Reinvest Price
8/27/2010 Dividend 0.01712 8/25/2010 8/26/2010 8/26/2010 15.92
7/30/2010 Dividend 0.01925 7/28/2010 7/29/2010 7/29/2010 15.59
6/25/2010 Dividend 0.01805 6/23/2010 6/24/2010 6/24/2010 15.52
5/28/2010 Dividend 0.01359 5/26/2010 5/27/2010 5/27/2010 15.45
4/30/2010 Dividend 0.02082 4/28/2010 4/29/2010 4/29/2010 15.45
3/26/2010 Dividend 0.01372 3/24/2010 3/25/2010 3/25/2010 15.25
2/26/2010 Dividend 0.01916 2/24/2010 2/25/2010 2/25/2010 15.24
1/29/2010 Dividend 0.02078 1/27/2010 1/28/2010 1/28/2010 15.23
12/24/2009 Dividend 0.01875 12/22/2009 12/23/2009 12/23/2009 15.04
12/3/2009 Long Term Gain 0.00792 12/1/2009 12/2/2009 12/2/2009 15.14
12/3/2009 Short Term Gain 0.09348 12/1/2009 12/2/2009 12/2/2009 15.14
11/25/2009 Dividend 0.01832 11/23/2009 11/24/2009 11/24/2009 15.24
10/30/2009 Dividend 0.02301 10/28/2009 10/29/2009 10/29/2009 15.14
9/25/2009 Dividend 0.02276 9/23/2009 9/24/2009 9/24/2009 15.08
8/28/2009 Dividend 0.02306 8/26/2009 8/27/2009 8/27/2009 14.86
7/31/2009 Dividend 0.02392 7/29/2009 7/30/2009 7/30/2009 14.56
6/26/2009 Dividend 0.02117 6/24/2009 6/25/2009 6/25/2009 14.41
5/29/2009 Dividend 0.02288 5/27/2009 5/28/2009 5/28/2009 14.22
4/30/2009 Dividend 0.02361 4/28/2009 4/29/2009 4/29/2009 14.04
3/27/2009 Dividend 0.03347 3/25/2009 3/26/2009 3/26/2009 13.85
2/27/2009 Dividend 0.04572 2/25/2009 2/26/2009 2/26/2009 13.82
1/30/2009 Dividend 0.04070 1/28/2009 1/29/2009 1/29/2009 13.91
12/24/2008 Dividend 0.04387 12/22/2008 12/23/2008 12/23/2008 13.97
12/4/2008 Long Term Gain 0.16892 12/2/2008 12/3/2008 12/3/2008 14.03
12/4/2008 Short Term Gain 0.09260 12/2/2008 12/3/2008 12/3/2008 14.03
11/26/2008 Dividend 0.04071 11/24/2008 11/25/2008 11/25/2008 14.32
10/30/2008 Dividend 0.03196 10/28/2008 10/29/2008 10/29/2008 14.30
9/26/2008 Dividend 0.03508 9/24/2008 9/25/2008 9/25/2008 15.15
8/28/2008 Dividend 0.03751 8/26/2008 8/27/2008 8/27/2008 15.44
7/31/2008 Dividend 0.03644 7/29/2008 7/30/2008 7/30/2008 15.35
6/27/2008 Dividend 0.03867 6/25/2008 6/26/2008 6/26/2008 15.48
5/30/2008 Dividend 0.04552 5/28/2008 5/29/2008 5/29/2008 15.42
4/25/2008 Dividend 0.04852 4/23/2008 4/24/2008 4/24/2008 15.49
3/28/2008 Dividend 0.04783 3/26/2008 3/27/2008 3/27/2008 15.66
2/28/2008 Dividend 0.04764 2/26/2008 2/27/2008 2/27/2008 15.65
1/31/2008 Dividend 0.04220 1/29/2008 1/30/2008 1/30/2008 15.79
12/28/2007 Dividend 0.04760 12/26/2007 12/27/2007 12/27/2007 15.67
12/7/2007 Long Term Gain 0.13432 12/5/2007 12/6/2007 12/6/2007 15.80
12/7/2007 Short Term Gain 0.11745 12/5/2007 12/6/2007 12/6/2007 15.80
11/29/2007 Dividend 0.05067 11/27/2007 11/28/2007 11/28/2007 16.06
10/26/2007 Dividend 0.05136 10/24/2007 10/25/2007 10/25/2007 15.98
9/28/2007 Dividend 0.05029 9/26/2007 9/27/2007 9/27/2007 15.84
8/30/2007 Dividend 0.04346 8/28/2007 8/29/2007 8/29/2007 15.72
7/27/2007 Dividend 0.04434 7/25/2007 7/26/2007 7/26/2007 15.72
6/29/2007 Dividend 0.04245 6/27/2007 6/28/2007 6/28/2007 15.54
5/31/2007 Dividend 0.04083 5/29/2007 5/30/2007 5/30/2007 15.65
4/27/2007 Dividend 0.04440 4/25/2007 4/26/2007 4/26/2007 15.75
3/30/2007 Dividend 0.04711 3/28/2007 3/29/2007 3/29/2007 15.82
2/23/2007 Dividend 0.05540 2/21/2007 2/22/2007 2/22/2007 15.72
1/26/2007 Dividend 0.04606 1/24/2007 1/25/2007 1/25/2007 15.65
12/28/2006 Dividend 0.04322 12/26/2006 12/27/2006 12/27/2006 15.76
12/8/2006 Long Term Gain 0.01094 12/6/2006 12/7/2006 12/7/2006 15.88
12/8/2006 Short Term Gain 0.01962 12/6/2006 12/7/2006 12/7/2006 15.88
11/22/2006 Dividend 0.04627 11/20/2006 11/21/2006 11/21/2006 15.80
10/27/2006 Dividend 0.04699 10/25/2006 10/26/2006 10/26/2006 15.72
9/28/2006 Dividend 0.04452 9/26/2006 9/27/2006 9/27/2006 15.78
8/25/2006 Dividend 0.04529 8/23/2006 8/24/2006 8/24/2006 15.60
7/28/2006 Dividend 0.04625 7/26/2006 7/27/2006 7/27/2006 15.48
6/29/2006 Dividend 0.04627 6/27/2006 6/28/2006 6/28/2006 15.31
5/26/2006 Dividend 0.04319 5/24/2006 5/25/2006 5/25/2006 15.47
4/27/2006 Dividend 0.04426 4/25/2006 4/26/2006 4/26/2006 15.43
3/30/2006 Dividend 0.03699 3/28/2006 3/29/2006 3/29/2006 15.58
2/24/2006 Dividend 0.04403 2/22/2006 2/23/2006 2/23/2006 15.66
1/27/2006 Dividend 0.03713 1/25/2006 1/26/2006 1/26/2006 15.71
12/29/2005 Dividend 0.03747 12/27/2005 12/28/2005 12/28/2005 15.79
12/9/2005 Long Term Gain 0.17948 12/7/2005 12/8/2005 12/8/2005 15.74
12/9/2005 Short Term Gain 0.11659 12/7/2005 12/8/2005 12/8/2005 15.74
11/23/2005 Dividend 0.03781 11/21/2005 11/22/2005 11/22/2005 16.03
10/28/2005 Dividend 0.03501 10/26/2005 10/27/2005 10/27/2005 15.98
9/29/2005 Dividend 0.03327 9/27/2005 9/28/2005 9/28/2005 16.15
8/26/2005 Dividend 0.03140 8/24/2005 8/25/2005 8/25/2005 16.19
7/28/2005 Dividend 0.02993 7/26/2005 7/27/2005 7/27/2005 16.13
6/24/2005 Dividend 0.02660 6/22/2005 6/23/2005 6/23/2005 16.23
5/27/2005 Dividend 0.02989 5/25/2005 5/26/2005 5/26/2005 16.12
4/28/2005 Dividend 0.02675 4/26/2005 4/27/2005 4/27/2005 16.05
3/24/2005 Dividend 0.02174 3/22/2005 3/23/2005 3/23/2005 15.85
2/25/2005 Dividend 0.02818 2/23/2005 2/24/2005 2/24/2005 15.99
1/28/2005 Dividend 0.02541 1/26/2005 1/27/2005 1/27/2005 15.96
12/29/2004 Dividend 0.02318 12/27/2004 12/28/2004 12/28/2004 15.83
12/10/2004 Long Term Gain 0.22692 12/8/2004 12/9/2004 12/9/2004 15.88
12/10/2004 Short Term Gain 0.23731 12/8/2004 12/9/2004 12/9/2004 15.88
11/24/2004 Dividend 0.03442 11/22/2004 11/23/2004 11/23/2004 16.31
10/28/2004 Dividend 0.02130 10/26/2004 10/27/2004 10/27/2004 16.29
9/24/2004 Dividend 0.02010 9/22/2004 9/23/2004 9/23/2004 16.32
8/27/2004 Dividend 0.02503 8/25/2004 8/26/2004 8/26/2004 16.14
7/29/2004 Dividend 0.02476 7/27/2004 7/28/2004 7/28/2004 15.91
6/25/2004 Dividend 0.02295 6/23/2004 6/24/2004 6/24/2004 15.81
5/27/2004 Dividend 0.02097 5/25/2004 5/26/2004 5/26/2004 15.74
4/29/2004 Dividend 0.02462 4/27/2004 4/28/2004 4/28/2004 15.93
3/26/2004 Dividend 0.02148 3/24/2004 3/25/2004 3/25/2004 16.29
2/26/2004 Dividend 0.01862 2/24/2004 2/25/2004 2/25/2004 16.08
1/29/2004 Dividend 0.02582 1/27/2004 1/28/2004 1/28/2004 15.98
12/30/2003 Dividend 0.03696 12/26/2003 12/29/2003 12/29/2003 15.88
12/30/2003 Long Term Gain 0.05979 12/26/2003 12/29/2003 12/29/2003 15.88
12/30/2003 Short Term Gain 0.38301 12/26/2003 12/29/2003 12/29/2003 15.88
11/21/2003 Dividend 0.03305 11/19/2003 11/20/2003 11/20/2003 16.24
10/30/2003 Dividend 0.03568 10/28/2003 10/29/2003 10/29/2003 16.12
9/26/2003 Dividend 0.03307 9/24/2003 9/25/2003 9/25/2003 16.12
8/28/2003 Dividend 0.03277 8/26/2003 8/27/2003 8/27/2003 15.76
7/25/2003 Dividend 0.03191 7/23/2003 7/24/2003 7/24/2003 15.96
6/27/2003 Dividend 0.01297 6/25/2003 6/26/2003 6/26/2003 16.26
5/29/2003 Dividend 0.02788 5/27/2003 5/28/2003 5/28/2003 16.19
4/25/2003 Dividend 0.02770 4/23/2003 4/24/2003 4/24/2003 15.69
3/28/2003 Dividend 0.03587 3/26/2003 3/27/2003 3/27/2003 15.53
2/27/2003 Dividend 0.03311 2/25/2003 2/26/2003 2/26/2003 15.69
1/30/2003 Dividend 0.04117 1/28/2003 1/29/2003 1/29/2003 15.56
12/30/2002 Dividend 0.04347 12/26/2002 12/27/2002 12/27/2002 15.64
12/6/2002 Long Term Gain 0.01194 12/4/2002 12/5/2002 12/5/2002 15.46
12/6/2002 Short Term Gain 0.18808 12/4/2002 12/5/2002 12/5/2002 15.46
11/22/2002 Dividend 0.04991 11/20/2002 11/21/2002 11/21/2002 15.59
10/25/2002 Dividend 0.04917 10/23/2002 10/24/2002 10/24/2002 15.40
9/27/2002 Dividend 0.03438 9/25/2002 9/26/2002 9/26/2002 15.67
8/29/2002 Dividend 0.04930 8/27/2002 8/28/2002 8/28/2002 15.63
7/26/2002 Dividend 0.05872 7/24/2002 7/25/2002 7/25/2002 15.70
6/27/2002 Dividend 0.05549 6/25/2002 6/26/2002 6/26/2002 15.71
5/30/2002 Dividend 0.05730 5/28/2002 5/29/2002 5/29/2002 15.58
4/26/2002 Dividend 0.05565 4/24/2002 4/25/2002 4/25/2002 15.59
3/27/2002 Dividend 0.05926 3/25/2002 3/26/2002 3/26/2002 15.37
2/22/2002 Dividend 0.05120 2/20/2002 2/21/2002 2/21/2002 15.65
1/25/2002 Dividend 0.05286 1/23/2002 1/24/2002 1/24/2002 15.55
12/28/2001 Dividend 0.06665 12/26/2001 12/27/2001 12/27/2001 15.51
12/7/2001 Short Term Gain 0.55352 12/5/2001 12/6/2001 12/6/2001 15.52
11/29/2001 Dividend 0.06408 11/27/2001 11/28/2001 11/28/2001 16.09
10/26/2001 Dividend 0.05996 10/24/2001 10/25/2001 10/25/2001 16.33
9/27/2001 Dividend 0.04638 9/25/2001 9/26/2001 9/26/2001 16.30
8/30/2001 Dividend 0.07717 8/28/2001 8/29/2001 8/29/2001 16.73
7/27/2001 Dividend 0.05697 7/25/2001 7/26/2001 7/26/2001 16.48
6/28/2001 Dividend 0.05375 6/26/2001 6/27/2001 6/27/2001 16.37
5/25/2001 Dividend 0.06080 5/23/2001 5/24/2001 5/24/2001 16.01
4/27/2001 Dividend 0.06948 4/25/2001 4/26/2001 4/26/2001 15.93
3/29/2001 Dividend 0.06968 3/27/2001 3/28/2001 3/28/2001 15.95
2/23/2001 Dividend 0.07970 2/21/2001 2/22/2001 2/22/2001 15.61
1/26/2001 Dividend 0.08776 1/24/2001 1/25/2001 1/25/2001 15.42
12/22/2000 Dividend 0.08220 12/20/2000 12/21/2000 12/21/2000 15.24
11/22/2000 Dividend 0.07964 11/20/2000 11/21/2000 11/21/2000 15.06
10/27/2000 Dividend 0.08088 10/25/2000 10/26/2000 10/26/2000 15.06
9/28/2000 Dividend 0.07687 9/26/2000 9/27/2000 9/27/2000 15.30
8/25/2000 Dividend 0.07821 8/23/2000 8/24/2000 8/24/2000 15.21
7/28/2000 Dividend 0.07679 7/26/2000 7/27/2000 7/27/2000 15.17
6/29/2000 Dividend 0.08964 6/27/2000 6/28/2000 6/28/2000 15.03
5/26/2000 Dividend 0.08116 5/24/2000 5/25/2000 5/25/2000 14.68
4/28/2000 Dividend 0.07200 4/26/2000 4/27/2000 4/27/2000 14.98
3/30/2000 Dividend 0.07265 3/28/2000 3/29/2000 3/29/2000 15.41
2/25/2000 Dividend 0.06866 2/23/2000 2/24/2000 2/24/2000 15.38
1/28/2000 Dividend 0.07094 1/26/2000 1/27/2000 1/27/2000 15.26
12/23/1999 Dividend 0.07130 12/21/1999 12/22/1999 12/22/1999 15.37
12/23/1999 Short Term Gain 0.00726 12/21/1999 12/22/1999 12/22/1999 15.37
11/24/1999 Dividend 0.06559 11/22/1999 11/23/1999 11/23/1999 15.55
10/29/1999 Dividend 0.06424 10/27/1999 10/28/1999 10/28/1999 15.37
9/24/1999 Dividend 0.06074 9/22/1999 9/23/1999 9/23/1999 15.55
8/27/1999 Dividend 0.05797 8/25/1999 8/26/1999 8/26/1999 15.62
7/30/1999 Dividend 0.05800 7/28/1999 7/29/1999 7/29/1999 15.59
6/25/1999 Dividend 0.05525 6/23/1999 6/24/1999 6/24/1999 15.50
5/28/1999 Dividend 0.06433 5/26/1999 5/27/1999 5/27/1999 15.80
4/30/1999 Dividend 0.05575 4/28/1999 4/29/1999 4/29/1999 16.11
3/26/1999 Dividend 0.05823 3/24/1999 3/25/1999 3/25/1999 15.95
2/26/1999 Dividend 0.05490 2/24/1999 2/25/1999 2/25/1999 15.81
1/29/1999 Dividend 0.05700 1/27/1999 1/28/1999 1/28/1999 16.20
12/24/1998 Dividend 0.05860 12/22/1998 12/23/1998 12/23/1998 16.02
12/24/1998 Long Term Gain 0.17709 12/22/1998 12/23/1998 12/23/1998 16.02
12/24/1998 Short Term Gain 0.36962 12/22/1998 12/23/1998 12/23/1998 16.02
11/25/1998 Dividend 0.07035 11/23/1998 11/24/1998 11/24/1998 16.49
10/30/1998 Dividend 0.06190 10/28/1998 10/29/1998 10/29/1998 16.53
9/25/1998 Dividend 0.05554 9/23/1998 9/24/1998 9/24/1998 16.70
8/28/1998 Dividend 0.06841 8/26/1998 8/27/1998 8/27/1998 16.68
7/31/1998 Dividend 0.07379 7/29/1998 7/30/1998 7/30/1998 16.70
6/26/1998 Dividend 0.06178 6/24/1998 6/25/1998 6/25/1998 16.77
5/29/1998 Dividend 0.06465 5/27/1998 5/28/1998 5/28/1998 16.73
4/24/1998 Dividend 0.07956 4/22/1998 4/23/1998 4/23/1998 16.68

Annual Distribution Totals

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B Shares: Without Sales Charge

Annual Capital Gains Totals Annual Capital Gains Totals

B Shares: Without Sales Charge

Top Holdings

Credit Quality
As of 6/30/2010
Average Effective Maturity 5.38 Years

Important Disclosure

Holdings are subject to change.


Management & Commentary

Fund Management

Calvert Asset Management Company, Inc.

As investment advisor to the Calvert family of funds, CAMCO oversees assets covering a broad range of equity, fixed-income, balanced, and asset allocation funds.

Related Market Outlook

Fees & Minimums

Annual Operating Expenses (deducted from Fund assets)

Description Expense
Management fees 0.650%
Distribution and service (12b-1) fees 1.000%
Other expenses 0.480%
Total annual Fund operating expenses 2.130%

Shareholder Fees (fees paid directly from your account)

Description Fee
Maximum sales charge (load) imposed on purchases
(as a percentage of offering price)		 none
Maximum deferred sales charge (load)
(as a percentage of purchase or redemption
proceeds, whichever is lower) 		4.00%
Short term trading fee
(unless otherwise noted the redemption fee applies to redemptions, including exchanges within 30 days of purchase (seven days for Class I and R shares)		 2.00%

Fund Expense Ratios

Description Expense
Expense Ratio
(if no waiver/reimbursement
in effect)		 2.13%
Net Expense Ratio
(if waiver/reimbursement
in effect)		 n/a
Gross Expense Ratio
(if waiver/reimbursement
in effect)		 n/a

Investment Minimums

Description Minimum
Minimum Initial Investment (ClassB) $2,000
Minimum Initial Investment for IRA (ClassB) $1,000
Minimum Subsequent Investment (ClassB) $250

Important Disclosure

Class B shares of Calvert funds are no longer offered for new purchases.


Management fees include the advisory fee paid by the Fund to the Advisor, and the administrative fee paid by the Fund to Calvert Administrative Services Company, an affiliate of the Advisor.


Fund literature and resources
Risk/Return Assessment

Risk/Return Assessment

Demonstrates where the Fund falls on a risk/return spectrum, relative to other Calvert Funds. Funds with more conservative objectives and strategies would fall on the left side of the spectrum, while funds with more aggressive objectives and strategies would appear on the right.

Compared against all Calvert funds