| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| Citadel Advisors | 9 | 9 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q2 2015 | 9 |
| Virtu KCG Holdings LLC | 8 | 8 | 0.00% | 0.00% | 0.00% | Q3 2013 | Q2 2015 | 8 |
| Timber Hill LLC | 8 | 8 | 0.00% | 0.00% | 0.01% | Q2 2013 | Q1 2015 | 8 |
| Varde Management, L.P. | 3 | 3 | 0.32% | 0.65% | 1.06% | Q2 2014 | Q4 2014 | 3 |
| SIMPLEX TRADING, LLC | 2 | 2 | 0.00% | 0.00% | 0.00% | Q1 2015 | Q2 2015 | 2 |
| GROUP ONE TRADING, L.P. | 1 | 1 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q2 2013 | 1 |
| KNIGHT CAPITAL GROUP LLC | 1 | 1 | 0.01% | 0.01% | 0.01% | Q2 2013 | Q2 2013 | 1 |
This page lists all the filers that currently own ARCH COAL INC or have owned ARCH COAL INC in the past.