| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| SIMPLEX TRADING, LLC | 27 | 1 | 0.00% | 0.00% | 0.00% | Q1 2016 | Q3 2023 | 28 |
| GROUP ONE TRADING, L.P. | 5 | 1 | 0.00% | 0.00% | 0.01% | Q1 2014 | Q3 2023 | 22 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 21 | 21 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2023 | 21 |
| JANE STREET GROUP, LLC | 2 | 1 | 0.00% | 0.00% | 0.00% | Q2 2022 | Q1 2023 | 3 |
| ACK Asset Management | 1 | 1 | 0.05% | 0.05% | 0.05% | Q1 2018 | Q1 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 MERCURY SYS INC or have owned MERCURY SYS INC in the past.