SC 13G/A | SEC Filings Hub

Filing metadata

Accession number: 0000052388-10-000031
Form type: SC 13G
Filer: AMERICAN CENTURY INVESTMENT MANAGEMENT INC
CIK: CIK 52388
Filed: Feb 16, 2010
Reporting period: Dec 31, 2009
Description: Passive 5%+ stake

Documents

0000052388-10-000031-index.htm

Complete submission

0000052388-10-000031.txt

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Filed by

AMERICAN CENTURY INVESTMENT MANAGEMENT INC