497 1 acit_497ipbf-092012.htm PROSPECTUS SUPPLEMENT acit_497ipbf-092012.htm



October 2, 2012


Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549-4720

Re:
American Century Investment Trust (the "Registrant")
 
1933 Act File No. 033-65170
 
1940 Act File No. 811-07822


Ladies and Gentlemen:

Pursuant to Rule 497(e) under the Securities Act of 1933, the aforementioned Registrant hereby submits for filing interactive data relating to the supplement filed with the Securities and Exchange Commission on September 21, 2012 under Rule 497(e) (Accession No. 0001437749-12-009662) to the Inflation Protection Bond Fund prospectus dated August 1, 2012.

The purpose of this filing is to submit an XBRL interactive data file in the manner provided by Rule 405 of Regulation S-T, General Instruction C.3.(g) of Form N-1A, and Rule 497(e).

If there are any questions or comments regarding this filing, please contact the undersigned at (816) 340-4916.

Sincerely,


/s/ Daniel K. Richardson                                                      
Daniel K. Richardson
Assistant Secretary
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
American Century Investments
 
P.O. Box 410141, 4500 Main Street
1-800-345-2021 or 816-531-5575
Kansas City, MO 64141-0141
www.americancentury.com

 
 

 
 
Inflation Protection Bond Fund


October 2, 2012



EXPLANATORY NOTE

On behalf of the Inflation Protection Bond Fund, a series of American Century Investment Trust (the “Trust”), and pursuant to Rule 497(e) under the Securities Act of 1933, as amended (the “Securities Act”), the purpose of this filing is to submit an interactive data file in the manner provided by Rule 405 of Regulation S-T and General Instruction C.3.(g) of Form N-1A. The interactive data file included as an exhibit to this filing relates to the prospectus supplement filed with the Securities and Exchange Commission on behalf of the Trust pursuant to Rule 497(e) under the Securities Act on September 21, 2012; such filing (Accession Number 0001437749-12-009662) is incorporated by reference into this Rule 497 Document.


EXHIBIT INDEX

EXHIBIT NUMBER                                                                            DESCRIPTION OF DOCUMENT
Exhibit – 101.INS
XBRL Instance Document
Exhibit – 101.SCH
XBRL Taxonomy Extension Schema Document
Exhibit – 101.DEF
XBRL Taxonomy Extension Definition Linkbase Document
Exhibit – 101.LAB
XBRL Taxonomy Extension Label Linkbase Document
Exhibit – 101.PRE
XBRL Taxonomy Extension Presentation Linkbase Document




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