| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| SIMPLEX TRADING, LLC | 36 | 36 | 0.00% | 0.00% | 0.01% | Q4 2014 | Q3 2023 | 36 |
| Allianz Asset Management GmbH | 22 | 11 | 0.00% | 0.01% | 0.04% | Q1 2015 | Q3 2023 | 33 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 21 | 21 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2023 | 21 |
| GROUP ONE TRADING, L.P. | 8 | 1 | 0.00% | 0.01% | 0.04% | Q3 2015 | Q3 2023 | 15 |
| Citadel Advisors | 11 | 1 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q2 2016 | 12 |
| Maven Securities LTD | 5 | 1 | 0.01% | 0.02% | 0.04% | Q3 2020 | Q3 2023 | 10 |
| SG Americas Securities, LLC | 5 | 1 | 0.00% | 0.00% | 0.01% | Q4 2018 | Q2 2022 | 9 |
| Timber Hill LLC | 6 | 1 | 0.00% | 0.00% | 0.01% | Q2 2013 | Q3 2016 | 8 |
| JANE STREET GROUP, LLC | 6 | 6 | 0.00% | 0.00% | 0.00% | Q2 2022 | Q3 2023 | 6 |
| Garda Capital Partners LP | 2 | 1 | 0.04% | 0.06% | 0.10% | Q4 2022 | Q3 2023 | 3 |
| Twin Tree Management, LP | 1 | 1 | 0.01% | 0.02% | 0.03% | Q2 2022 | Q1 2023 | 2 |
| Hudson Bay Capital Management LP | 1 | 1 | 0.02% | 0.02% | 0.02% | Q4 2018 | Q4 2018 | 1 |
| PEAK6 Group LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q3 2014 | 1 |
| SIGNATUREFD, LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q2 2023 | Q2 2023 | 1 |
| JPMORGAN CHASE & CO | 1 | 1 | 0.00% | 0.00% | 0.00% | Q2 2019 | Q2 2019 | 1 |
This page lists all the filers that currently own MARSH & MCLENNAN COS INC or have owned MARSH & MCLENNAN COS INC in the past.