SC 13G/A | SEC Filings Hub

Filing metadata

Accession number: 0000052388-13-000008
Form type: SC 13G
Filer: AMERICAN CENTURY INVESTMENT MANAGEMENT INC
CIK: CIK 52388
Filed: Feb 11, 2013
Reporting period: Dec 31, 2012
Description: Passive 5%+ stake

Documents

0000052388-13-000008-index.htm

Complete submission

0000052388-13-000008.txt

directory listing

Filed by

AMERICAN CENTURY INVESTMENT MANAGEMENT INC