| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 12 | 2 | 0.00% | 0.00% | 0.01% | Q3 2015 | Q1 2020 | 16 |
| SIMPLEX TRADING, LLC | 9 | 2 | 0.00% | 0.00% | 0.02% | Q3 2015 | Q2 2019 | 14 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 7 | 7 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q1 2020 | 7 |
| Citadel Advisors | 2 | 1 | 0.00% | 0.00% | 0.00% | Q3 2015 | Q2 2016 | 3 |
| SABBY MANAGEMENT, LLC | 2 | 2 | 0.04% | 0.04% | 0.04% | Q2 2015 | Q3 2015 | 2 |
This page lists all the filers that currently own ZAFGEN INC or have owned ZAFGEN INC in the past.