| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| SIMPLEX TRADING, LLC | 16 | 16 | 0.00% | 0.00% | 0.01% | Q1 2015 | Q4 2018 | 16 |
| GROUP ONE TRADING, L.P. | 9 | 1 | 0.00% | 0.00% | 0.01% | Q2 2016 | Q4 2018 | 10 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 7 | 7 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q1 2020 | 7 |
| Citadel Advisors | 6 | 6 | 0.00% | 0.00% | 0.00% | Q4 2014 | Q1 2016 | 6 |
This page lists all the filers that currently own BRISTOW GROUP INC or have owned BRISTOW GROUP INC in the past.