SC 13G/A | SEC Filings Hub

Filing metadata

Accession number: 0000052388-11-000009
Form type: SC 13G
Filer: AMERICAN CENTURY INVESTMENT MANAGEMENT INC
CIK: CIK 52388
Filed: Feb 14, 2011
Reporting period: Dec 31, 2010
Description: Passive 5%+ stake

Documents

0000052388-11-000009-index.htm

Complete submission

0000052388-11-000009.txt

directory listing

Filed by

AMERICAN CENTURY INVESTMENT MANAGEMENT INC