| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| SIMPLEX TRADING, LLC | 3 | 3 | 0.00% | 0.00% | 0.00% | Q3 2015 | Q1 2016 | 3 |
| Citadel Advisors | 2 | 2 | 0.00% | 0.00% | 0.00% | Q3 2015 | Q4 2015 | 2 |
| Timber Hill LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2015 | Q3 2015 | 1 |
| Pentwater Capital Management LP | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2015 | Q3 2015 | 1 |
| JPMORGAN CHASE & CO | 1 | 1 | 0.00% | 0.00% | 0.00% | Q4 2015 | Q4 2015 | 1 |
This page lists all the filers that currently own ARCH COAL INC or have owned ARCH COAL INC in the past.