| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| SIMPLEX TRADING, LLC | 36 | 36 | 0.00% | 0.00% | 0.02% | Q4 2014 | Q3 2023 | 36 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 21 | 21 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2023 | 21 |
| GROUP ONE TRADING, L.P. | 12 | 7 | 0.00% | 0.00% | 0.02% | Q2 2013 | Q3 2023 | 19 |
| JANE STREET GROUP, LLC | 6 | 6 | 0.00% | 0.01% | 0.01% | Q2 2022 | Q3 2023 | 6 |
| Twin Tree Management, LP | 4 | 1 | 0.02% | 0.13% | 0.26% | Q2 2022 | Q3 2023 | 5 |
| Citadel Advisors | 4 | 4 | 0.00% | 0.00% | 0.00% | Q3 2015 | Q2 2016 | 4 |
| Catalyst Capital Advisors LLC | 2 | 2 | 0.00% | 0.00% | 0.00% | Q3 2015 | Q4 2015 | 2 |
| Maven Securities LTD | 2 | 2 | 0.09% | 0.29% | 0.50% | Q2 2021 | Q3 2021 | 2 |
This page lists all the filers that currently own VANGUARD SPECIALIZED FUNDS or have owned VANGUARD SPECIALIZED FUNDS in the past.