| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 38 | 2 | 0.00% | 0.02% | 0.17% | Q2 2013 | Q3 2023 | 40 |
| SIMPLEX TRADING, LLC | 36 | 36 | 0.00% | 0.00% | 0.01% | Q4 2014 | Q3 2023 | 36 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 21 | 21 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2023 | 21 |
| Citadel Advisors | 13 | 13 | 0.00% | 0.00% | 0.01% | Q2 2013 | Q2 2016 | 13 |
| JANE STREET GROUP, LLC | 3 | 3 | 0.00% | 0.00% | 0.00% | Q2 2022 | Q4 2022 | 3 |
| Timber Hill LLC | 2 | 2 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q3 2013 | 2 |
| Hudson Bay Capital Management LP | 1 | 1 | 0.12% | 0.12% | 0.12% | Q1 2017 | Q1 2017 | 1 |
| IMC-Chicago, LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q4 2018 | Q4 2018 | 1 |
| PEAK6 Group LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q3 2014 | 1 |
This page lists all the filers that currently own POST HLDGS INC or have owned POST HLDGS INC in the past.