SC 13G/A | SEC Filings Hub

Filing metadata

Accession number: 0000080255-12-000368
Form type: SC 13G
Filer: CBOE Holdings, Inc.
CIK: CIK 1374310
Filed: Feb 13, 2012
Reporting period: Dec 31, 2011
Description: Passive 5%+ stake

Documents

0000080255-12-000368-index.htm

Complete submission

0000080255-12-000368.txt

directory listing

Filed by

CBOE Holdings, Inc.