| Filed On | Filing |
|---|---|
| 01 Feb 2018 | SC 13G |
| 14 Feb 2017 | SC 13G |
| 11 Feb 2016 | CBOE HOLDINGS, INC. |
| 20 Feb 2015 | CBOE |
| 25 Feb 2014 | CBOE |
| 12 Feb 2014 | SC 13G |
| 07 Feb 2014 | HORIZONTHIRTEENGCBOE |
| 30 Jan 2013 | SC 13G |
| 25 Jan 2013 | HORIZONTHIRTEENGCBOETH |
| 26 Jan 2012 | HORIZONTHIRTEENGCBOETW |
| 10 Jun 2011 | HORIZONTHIRTEENGCBOE |
| 12 Jul 2010 | CBOE AS OF 6/30/2010 |
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