| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 13 | 13 | 0.00% | 0.02% | 0.07% | Q2 2013 | Q2 2016 | 13 |
| Citadel Advisors | 13 | 13 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q2 2016 | 13 |
| SIMPLEX TRADING, LLC | 8 | 8 | 0.00% | 0.00% | 0.00% | Q4 2014 | Q3 2016 | 8 |
| Timber Hill LLC | 5 | 5 | 0.00% | 0.00% | 0.01% | Q2 2013 | Q2 2014 | 5 |
| SG Americas Securities, LLC | 2 | 2 | 0.00% | 0.00% | 0.00% | Q1 2016 | Q2 2016 | 2 |
| Virtu KCG Holdings LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q1 2014 | Q1 2014 | 1 |
| SOCIETE GENERALE | 1 | 1 | 0.00% | 0.00% | 0.00% | Q2 2016 | Q2 2016 | 1 |
| BALYASNY ASSET MANAGEMENT L.P. | 1 | 1 | 0.10% | 0.10% | 0.10% | Q3 2013 | Q3 2013 | 1 |
| GLG INC. | 1 | 1 | 0.05% | 0.05% | 0.05% | Q3 2013 | Q3 2013 | 1 |
This page lists all the filers that currently own ITT EDUCATIONAL SERVICES INC or have owned ITT EDUCATIONAL SERVICES INC in the past.