| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| SIMPLEX TRADING, LLC | 19 | 8 | 0.00% | 0.01% | 0.06% | Q4 2014 | Q3 2021 | 27 |
| GROUP ONE TRADING, L.P. | 18 | 2 | 0.00% | 0.01% | 0.05% | Q3 2013 | Q3 2021 | 25 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 13 | 13 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2021 | 13 |
| Citadel Advisors | 12 | 12 | 0.00% | 0.00% | 0.01% | Q3 2013 | Q2 2016 | 12 |
| PEAK6 Group LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q3 2014 | 1 |
| HARBER ASSET MANAGEMENT LLC | 1 | 1 | 0.20% | 0.20% | 0.20% | Q1 2014 | Q1 2014 | 1 |
This page lists all the filers that currently own EXONE CO or have owned EXONE CO in the past.