| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 7 | 7 | 0.00% | 0.01% | 0.02% | Q4 2013 | Q2 2015 | 7 |
| Citadel Advisors | 4 | 4 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q2 2015 | 4 |
| SIMPLEX TRADING, LLC | 3 | 3 | 0.00% | 0.00% | 0.00% | Q4 2014 | Q2 2015 | 3 |
| SABBY MANAGEMENT, LLC | 2 | 2 | 0.12% | 0.14% | 0.16% | Q1 2015 | Q2 2015 | 2 |
| PEAK6 Group LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q3 2014 | 1 |
This page lists all the filers that currently own ZOGENIX INC or have owned ZOGENIX INC in the past.