| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 42 | 42 | 0.00% | 0.08% | 0.36% | Q2 2013 | Q3 2023 | 42 |
| SIMPLEX TRADING, LLC | 36 | 36 | 0.00% | 0.00% | 0.03% | Q4 2014 | Q3 2023 | 36 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 21 | 21 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2023 | 21 |
| Marathon Trading Investment Management LLC | 16 | 16 | 0.00% | 0.04% | 0.16% | Q1 2019 | Q4 2022 | 16 |
| JPMORGAN CHASE & CO | 9 | 2 | 0.00% | 0.00% | 0.00% | Q3 2015 | Q3 2023 | 13 |
| Citadel Advisors | 13 | 13 | 0.00% | 0.00% | 0.01% | Q2 2013 | Q2 2016 | 13 |
| SABBY MANAGEMENT, LLC | 6 | 3 | 0.07% | 0.47% | 1.09% | Q3 2013 | Q4 2016 | 12 |
| Timber Hill LLC | 8 | 8 | 0.00% | 0.00% | 0.01% | Q1 2015 | Q4 2016 | 8 |
| IMC-Chicago, LLC | 5 | 1 | 0.00% | 0.00% | 0.00% | Q2 2020 | Q4 2021 | 6 |
| JANE STREET GROUP, LLC | 5 | 5 | 0.00% | 0.00% | 0.00% | Q2 2022 | Q2 2023 | 5 |
| Daiwa Securities Group Inc. | 3 | 3 | 0.00% | 0.00% | 0.01% | Q2 2019 | Q4 2019 | 3 |
| BOLTON LP | 2 | 2 | 0.00% | 0.00% | 0.00% | Q3 2013 | Q4 2013 | 2 |
| Platinum Management (NY) LLC | 2 | 2 | 0.00% | 0.01% | 0.01% | Q4 2013 | Q1 2014 | 2 |
| ORACLE INVESTMENT MANAGEMENT INC | 2 | 2 | 0.30% | 0.34% | 0.38% | Q1 2023 | Q2 2023 | 2 |
| PEAK6 Group LLC | 1 | 1 | 0.01% | 0.01% | 0.01% | Q3 2014 | Q3 2014 | 1 |
This page lists all the filers that currently own OPKO HEALTH INC or have owned OPKO HEALTH INC in the past.