| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 17 | 17 | 0.00% | 0.02% | 0.07% | Q1 2014 | Q1 2018 | 17 |
| SIMPLEX TRADING, LLC | 10 | 1 | 0.00% | 0.00% | 0.00% | Q4 2014 | Q3 2017 | 11 |
| Citadel Advisors | 8 | 8 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q2 2016 | 8 |
| Marathon Trading Investment Management LLC | 3 | 3 | 0.02% | 0.04% | 0.05% | Q1 2015 | Q3 2015 | 3 |
| PEAK6 Group LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q3 2014 | 1 |
| Andalusian Capital Partners, LP | 1 | 1 | 0.16% | 0.16% | 0.16% | Q3 2015 | Q3 2015 | 1 |
This page lists all the filers that currently own WESTMORELAND COAL CO or have owned WESTMORELAND COAL CO in the past.