-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, SpWAtzyOZe46ohRTvmRynt9O3EUS5SRiOWp2mER6wJf/incqFDEzoiU0OPCGSZQ0 vb9su2Cq/zaCFyBLp4o+qw== 0000773757-07-000023.txt : 20070223 0000773757-07-000023.hdr.sgml : 20070223 20070223161759 ACCESSION NUMBER: 0000773757-07-000023 CONFORMED SUBMISSION TYPE: 497 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20070223 DATE AS OF CHANGE: 20070223 EFFECTIVENESS DATE: 20070223 FILER: COMPANY DATA: COMPANY CONFORMED NAME: COLUMBIA FUNDS SERIES TRUST I CENTRAL INDEX KEY: 0000773757 IRS NUMBER: 363376651 STATE OF INCORPORATION: MA FISCAL YEAR END: 0630 FILING VALUES: FORM TYPE: 497 SEC ACT: 1933 Act SEC FILE NUMBER: 002-99356 FILM NUMBER: 07645945 BUSINESS ADDRESS: STREET 1: ONE FINANCIAL CENTER CITY: BOSTON STATE: MA ZIP: 02111 BUSINESS PHONE: 8003382550 MAIL ADDRESS: STREET 1: ONE FINANCIAL CENTER CITY: BOSTON STATE: MA ZIP: 02111 FORMER COMPANY: FORMER CONFORMED NAME: COLUMBIA FUNDS TRUST IX DATE OF NAME CHANGE: 20031107 FORMER COMPANY: FORMER CONFORMED NAME: LIBERTY STEIN ROE FUNDS MUNICIPAL TRUST DATE OF NAME CHANGE: 19991025 FORMER COMPANY: FORMER CONFORMED NAME: STEINROE MUNICIPAL TRUST DATE OF NAME CHANGE: 19920703

0000773757 S000010617 Columbia Strategic Income Fund

C000029358 Class A

C000029359 Class B

C000029360 Class C

C000029361 Class J

C000029362 Class Z

0000773757 S000012074 Columbia Strategic Investor Fund

C000032872 Class A

C000032873 Class B

C000032874 Class C

C000032875 Class D

C000032876 Class Z

0000773757 S000012079 Columbia Dividend Income Fund

C000032900 Class A

C000032901 Class B

C000032902 Class C

C000032903 Class G

C000032904 Class T

C000032905 Class Z

0000773757 S000012101 Columbia High Yield Opportunity Fund

C000033001 Class A

C000033002 Class B

C000033003 Class C

C000033004 Class Z

497 1 cdif.txt BENCHMARK SUPPLEMENTS COLUMBIA DIVIDEND INCOME FUND (the "Fund") Supplement to Prospectuses dated February 1, 2007 1. The second paragraph under the heading "Average Annual Total Returns" in the call-out box entitled "Understanding Performance" is revised in its entirety as follows: Beginning on February 23, 2007, the Fund's benchmark was changed to the Russell 1000 Index, an unmanaged index that tracks the performance of the largest 1000 securities in the Russell 3000 Index, based on market capitalization. Previously, the Fund's returns were compared to the Russell 1000 Value Index, an unmanaged index that tracks the performance of those Russell 1000 Index companies with lower price-to-book ratios and lower forecasted growth values. The advisor believes that the Russell 1000 Index, because of its broader market representation, more accurately reflects the type of securities in which the Fund invests. The Fund's average annual returns for the one-year, five-year and the life of the Fund periods are shown compared to the Russell 1000 Index, as well as the Fund's previous benchmark, the Russell 1000 Value Index. Unlike the Fund, indices are not investments, do not incur fees, expenses or taxes and are not professionally managed. 2. The following line is added to the "Average Annual Total Returns - for periods ended December 31, 2006" table: 1 Year 5 Years Life of the Fund Russell 1000 Index (%) 15.46 6.82 5.49(2) INT-47/128104-0207 February 23, 2007 Columbia Strategic Investor Fund (the "Fund") Supplement to the Fund's Prospectuses dated January 1, 2007 1. The third paragraph under the caption "Understanding Performance" in the "Performance History" section is replaced in its entirety as follows: Beginning on February 23, 2007, the Fund's benchmark was changed to the Russell 1000 Index. The Russell 1000 Index is an unmanaged index that tracks the performance of the largest 1000 securities in the Russell 3000 Index, based on market capitalization. Previously, the Fund's returns were compared to the S&P 500 Index, an unmanaged index that is generally considered representative of the U.S. stock market, and the Russell 3000 Value Index, an unmanaged index that measures the performance of those Russell 3000 Index companies with lower price-to-book ratios and lower forecasted growth values. The advisor believes that the Russell 1000 Index, because of its broader market representation, more accurately reflects the type of securities in which the Fund invests. Unlike the Fund, indices are not investments, do not incur fees, expenses or taxes and are not professionally managed. 2.The following row is added to the chart entitled "Average Annual Total Returns - for periods ended December 31, 2005": 1 year 5 years Life of the Fund Russell 1000 Index 6.27% 1.07% -0.16 (2) INT-47/128201-0207 February 23, 2007 COLUMBIA HIGH YIELD OPPORTUNITY FUND COLUMBIA STRATEGIC INCOME FUND (the "Funds") SUPPLEMENT TO THE STATEMENT OF ADDITIONAL INFORMATION DATED OCTOBER 1, 2006 1. The following paragraph is added under the heading "OTHER INVESTMENT POLICIES": As a non-fundamental investment policy, which may be changed without a shareholder vote, the Strategic Income Fund may not: (1) Acquire securities of other registered open-end investment companies or registered unit investment trusts in reliance on Sections 12(d)(1)(F) or (G) of the Investment Company Act of 1940, as amended. 2. The following tables under the heading "Other Accounts Managed by the Portfolio Managers" are revised and replaced in their entirety:

INT-50/128105-0207 February 23, 2007 -----END PRIVACY-ENHANCED MESSAGE-----