| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 22 | 22 | 0.00% | 0.03% | 0.09% | Q2 2013 | Q3 2018 | 22 |
| SIMPLEX TRADING, LLC | 16 | 16 | 0.00% | 0.00% | 0.00% | Q4 2014 | Q3 2018 | 16 |
| Citadel Advisors | 12 | 12 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q1 2016 | 12 |
| SABBY MANAGEMENT, LLC | 6 | 4 | 0.00% | 0.12% | 0.50% | Q2 2013 | Q4 2015 | 10 |
| 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.