| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 15 | 2 | 0.00% | 0.01% | 0.02% | Q2 2013 | Q4 2017 | 17 |
| SIMPLEX TRADING, LLC | 9 | 1 | 0.00% | 0.00% | 0.00% | Q4 2014 | Q1 2018 | 12 |
| Citadel Advisors | 7 | 1 | 0.00% | 0.00% | 0.00% | Q4 2013 | Q4 2015 | 8 |
| SABBY MANAGEMENT, LLC | 3 | 3 | 0.00% | 0.01% | 0.01% | Q1 2014 | Q3 2014 | 3 |
| Marathon Trading Investment Management LLC | 2 | 2 | 0.00% | 0.00% | 0.00% | Q4 2014 | Q1 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 PSIVIDA CORP or have owned PSIVIDA CORP in the past.