| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 19 | 19 | 0.00% | 0.03% | 0.06% | Q2 2013 | Q4 2017 | 19 |
| Timber Hill LLC | 13 | 13 | 0.00% | 0.00% | 0.01% | Q2 2013 | Q2 2016 | 13 |
| Citadel Advisors | 13 | 13 | 0.00% | 0.01% | 0.12% | Q2 2013 | Q2 2016 | 13 |
| SIMPLEX TRADING, LLC | 10 | 1 | 0.00% | 0.00% | 0.01% | Q4 2014 | Q4 2017 | 11 |
| Virtu KCG Holdings LLC | 2 | 2 | 0.00% | 0.00% | 0.00% | Q4 2013 | Q1 2014 | 2 |
| JPMORGAN CHASE & CO | 1 | 1 | 0.00% | 0.00% | 0.00% | Q4 2015 | Q4 2015 | 1 |
| SG Americas Securities, LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q4 2014 | Q4 2014 | 1 |
| Signpost Capital Advisors, LP | 1 | 1 | 6.40% | 6.40% | 6.40% | Q4 2015 | Q4 2015 | 1 |
This page lists all the filers that currently own CALPINE CORP or have owned CALPINE CORP in the past.