| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 6 | 1 | 0.00% | 0.00% | 0.02% | Q2 2013 | Q4 2021 | 22 |
| SIMPLEX TRADING, LLC | 12 | 1 | 0.00% | 0.00% | 0.00% | Q4 2015 | Q4 2021 | 20 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 14 | 14 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q4 2021 | 14 |
| Citadel Advisors | 3 | 3 | 0.00% | 0.00% | 0.00% | Q2 2014 | Q4 2015 | 6 |
| Worth Venture Partners, LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q4 2021 | Q4 2021 | 1 |
This page lists all the filers that currently own VOCERA COMMUNICATIONS INC or have owned VOCERA COMMUNICATIONS INC in the past.