| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 5 | 3 | 0.00% | 0.00% | 0.00% | Q1 2014 | Q3 2018 | 8 |
| SIMPLEX TRADING, LLC | 3 | 3 | 0.00% | 0.00% | 0.00% | Q1 2018 | Q3 2018 | 3 |
| Citadel Advisors | 2 | 2 | 0.00% | 0.00% | 0.00% | Q3 2015 | Q4 2015 | 2 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2018 | 1 |
| Thrax Management, LLC | 1 | 1 | 0.03% | 0.03% | 0.03% | Q1 2016 | Q1 2016 | 1 |
This page lists all the filers that currently own MITEL NETWORKS CORP or have owned MITEL NETWORKS CORP in the past.