| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| SIMPLEX TRADING, LLC | 11 | 11 | 0.00% | 0.00% | 0.00% | Q1 2018 | Q3 2020 | 11 |
| GROUP ONE TRADING, L.P. | 8 | 2 | 0.00% | 0.00% | 0.01% | Q1 2018 | Q3 2020 | 10 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 9 | 9 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2020 | 9 |
| JPMORGAN CHASE & CO | 1 | 1 | 0.00% | 0.00% | 0.00% | Q1 2019 | Q1 2019 | 1 |
This page lists all the filers that currently own PROTEOSTASIS THERAPEUTICS IN or have owned PROTEOSTASIS THERAPEUTICS IN in the past.