| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| Timber Hill LLC | 2 | 2 | 0.00% | 0.01% | 0.01% | Q2 2013 | Q3 2013 | 2 |
| GROUP ONE TRADING, L.P. | 2 | 2 | 0.22% | 0.30% | 0.37% | Q2 2013 | Q3 2013 | 2 |
| HALCYON OFFSHORE ASSET MANAGEMENT LLC | 1 | 1 | 0.07% | 0.07% | 0.07% | Q2 2013 | Q2 2013 | 1 |
| BOLTON LP | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2013 | Q3 2013 | 1 |
This page lists all the filers that currently own ELAN PLC or have owned ELAN PLC in the past.