| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 27 | 12 | 0.00% | 0.00% | 0.01% | Q2 2013 | Q1 2023 | 39 |
| SIMPLEX TRADING, LLC | 12 | 4 | 0.00% | 0.00% | 0.00% | Q2 2015 | Q1 2023 | 29 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 19 | 19 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q1 2023 | 19 |
| Citadel Advisors | 6 | 4 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q4 2015 | 10 |
| JANE STREET GROUP, LLC | 3 | 3 | 0.00% | 0.00% | 0.00% | Q2 2022 | Q4 2022 | 3 |
| PEAK6 Group LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q3 2014 | 1 |
| JPMORGAN CHASE & CO | 1 | 1 | 0.00% | 0.00% | 0.00% | Q2 2022 | Q2 2022 | 1 |
This page lists all the filers that currently own GRAN TIERRA ENERGY INC or have owned GRAN TIERRA ENERGY INC in the past.