| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| SIMPLEX TRADING, LLC | 27 | 3 | 0.00% | 0.01% | 0.04% | Q3 2015 | Q3 2023 | 30 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 21 | 21 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2023 | 21 |
| GROUP ONE TRADING, L.P. | 8 | 7 | 0.00% | 0.03% | 0.22% | Q4 2018 | Q3 2022 | 15 |
| Allianz Asset Management GmbH | 4 | 1 | 0.00% | 0.00% | 0.01% | Q4 2019 | Q3 2023 | 11 |
| Citadel Advisors | 5 | 3 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q1 2016 | 8 |
| JANE STREET GROUP, LLC | 6 | 6 | 0.00% | 0.00% | 0.00% | Q2 2022 | Q3 2023 | 6 |
| Maven Securities LTD | 2 | 1 | 0.01% | 0.01% | 0.02% | Q2 2021 | Q1 2022 | 3 |
| Garda Capital Partners LP | 2 | 2 | 0.19% | 0.19% | 0.20% | Q2 2023 | Q3 2023 | 2 |
| Twin Tree Management, LP | 1 | 1 | 0.02% | 0.03% | 0.04% | Q2 2022 | Q3 2023 | 2 |
| Magnetar Financial LLC | 2 | 2 | 0.00% | 0.00% | 0.00% | Q1 2019 | Q2 2019 | 2 |
| CIBC WORLD MARKETS CORP | 1 | 1 | 0.02% | 0.02% | 0.02% | Q3 2019 | Q3 2019 | 1 |
| BOOTHBAY FUND MANAGEMENT, LLC | 1 | 1 | 0.11% | 0.11% | 0.11% | Q4 2020 | Q4 2020 | 1 |
| WELLS FARGO & COMPANY/MN | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2021 | Q3 2021 | 1 |
This page lists all the filers that currently own MSCI INC or have owned MSCI INC in the past.