AMERICAN CENTURY INVESTMENTS
4500 MAIN STREET
KANSAS CITY, MISSOURI 64111
April 10, 2007
Mr. Howie Hallock
Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549
Re: Request by American Century Investment Trust (the "Registrant")
for Withdrawal of Registration Statement on Form N-14 (File No. 333-140915)
Dear Mr. Hallock:
Please accept this withdrawal request pursuant to Securities Act Rule 477
on behalf of the Registrant. The relevant details concerning this request are as
follows:
o Name and CIK of Registrant: American Century Investment Trust
(0000908406)
o Accession number of filing that is the subject of the request:
0000908406-07-000009
o Circumstances associated with the request: The Registrant has
restructured the reclassification proposal that was the subject of
this filing, and a registration statement on Form N-14 is no longer
required.
o 1933 Act Number that was newly generated with the registration
statement filing on Form N-14 to be withdrawn: 333-140915
o No securities have been sold in connection with this offering.
If you have any questions about this filing, please contact me at (816)
340-7276.
Sincerely,
AMERICAN CENTURY INVESTMENT TRUST
By: /s/ Brian L. Brogan
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Brian L. Brogan
Assistant Vice President
