CUSIP 571748902
MARSH & MCLENNAN COS INC
12 institutions · $129.1M total · 728,610 shares
| # | Manager | Shares | Value | % of Total | Period |
|---|---|---|---|---|---|
| 1 | JANE STREET GROUP, LLC | 486,400 | $102.5M | 66.75% | 2024-06-30 |
| 2 | NATIONAL BANK OF CANADA /FI/ | 510 | $11.4M | 0.06% | 2024-09-30 |
| 3 | IMC-Chicago, LLC | 33,500 | $6.2M | 4.59% | 2025-12-31 |
| 4 | Allianz Asset Management GmbH | 16,200 | $3.1M | 2.22% | 2023-12-31 |
| 5 | SIMPLEX TRADING, LLC | 12,100 | $2.2M | 1.66% | 2025-12-31 |
| 6 | Universal- Beteiligungs- und Servicegesellschaft mbH | 6,100 | $1.5M | 0.83% | 2025-03-31 |
| 7 | Twin Tree Management, LP | 3,900 | $742.2K | 0.53% | 2023-12-31 |
| 8 | GARDA CAPITAL PARTNERS LP | 2,900 | $634.1K | 0.39% | 2025-06-30 |
| 9 | Maven Securities LTD | 2,000 | $424.8K | 0.27% | 2024-12-31 |
| 10 | GROUP ONE TRADING, L.P. | 2,000 | $371.0K | 0.27% | 2025-12-31 |
| 11 | SG Americas Securities, LLC | 163,000 | $196 | 22.37% | 2024-09-30 |
| 12 | CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | $0 | 0.00% | 2025-06-30 |