| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| SIMPLEX TRADING, LLC | 22 | 22 | 0.00% | 0.00% | 0.00% | Q1 2015 | Q2 2020 | 22 |
| GROUP ONE TRADING, L.P. | 5 | 1 | 0.00% | 0.00% | 0.01% | Q4 2014 | Q2 2020 | 11 |
| Citadel Advisors | 8 | 8 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q2 2016 | 8 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 8 | 8 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q2 2020 | 8 |
| Edenbrook Capital, LLC | 1 | 1 | 0.76% | 0.76% | 0.76% | Q1 2020 | Q1 2020 | 1 |
This page lists all the filers that currently own RUBICON PROJ INC or have owned RUBICON PROJ INC in the past.