MKTX holders · CITADEL ADVISORS LLC 13F · MKTX stock
CITADEL ADVISORS LLC MarketAxess Holdings Inc (MKTX) 13F holding
CITADEL ADVISORS LLC reported 75,794 MKTX shares valued at $12.50B as of 2026-03-31 (COM). Cached 13F row, not a live tape.
| Report | Shares | Value | Class |
|---|---|---|---|
| 2026-03-31 | 75,794 | $12.50B | COM |
| 2026-03-31 | 21,000 | $3.46B | Put |
| 2026-03-31 | 19,500 | $3.22B | Call |
| 2026-03-31 | 6,365 | $1.05B | COM |
| 2025-12-31 | 399,640 | $72.43B | COM |
| 2025-12-31 | 225,568 | $40.88B | COM |
| 2025-12-31 | 37,100 | $6.72B | Put |
| 2025-12-31 | 33,200 | $6.02B | Call |
| 2025-09-30 | 285,273 | $49.71B | COM |
| 2025-09-30 | 69,500 | $12.11B | Call |
| 2025-09-30 | 27,100 | $4.72B | Put |
| 2025-09-30 | 24,813 | $4.32B | COM |
| 2025-06-30 | 274,123 | $61.22B | COM |
| 2025-06-30 | 77,043 | $17.21B | COM |
| 2025-06-30 | 58,500 | $13.07B | Call |
| 2025-06-30 | 4,200 | $938.0M | Put |
| 2025-06-30 | 900 | $201.0M | Put |
| 2025-06-30 | 600 | $134.0M | Call |
Not investment advice. Cached 13F row, not EDGAR XML.