| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 22 | 22 | 0.00% | 0.03% | 0.15% | Q2 2013 | Q3 2018 | 22 |
| SIMPLEX TRADING, LLC | 16 | 16 | 0.00% | 0.00% | 0.01% | Q4 2014 | Q3 2018 | 16 |
| Citadel Advisors | 13 | 13 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q2 2016 | 13 |
| SABBY MANAGEMENT, LLC | 3 | 2 | 0.01% | 0.19% | 0.84% | Q2 2013 | Q4 2014 | 5 |
| BLAIR WILLIAM & CO/IL | 2 | 1 | 0.00% | 0.00% | 0.00% | Q3 2013 | Q4 2014 | 3 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2018 | 1 |
This page lists all the filers that currently own KERYX BIOPHARMACEUTICALS INC or have owned KERYX BIOPHARMACEUTICALS INC in the past.