| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 27 | 1 | 0.00% | 0.00% | 0.02% | Q2 2013 | Q3 2023 | 31 |
| SIMPLEX TRADING, LLC | 28 | 28 | 0.00% | 0.00% | 0.00% | Q4 2016 | Q3 2023 | 28 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 21 | 21 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2023 | 21 |
| JANE STREET GROUP, LLC | 4 | 4 | 0.00% | 0.00% | 0.00% | Q2 2022 | Q1 2023 | 4 |
| Platinum Management (NY) LLC | 1 | 1 | 0.02% | 0.02% | 0.02% | Q2 2014 | Q2 2014 | 1 |
| OSAIC HOLDINGS, INC. | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2021 | Q3 2021 | 1 |
This page lists all the filers that currently own ULTRA CLEAN HLDGS INC or have owned ULTRA CLEAN HLDGS INC in the past.