CME Group Inc. (CME) ownership: Top institutional holder: VANGUARD GROUP INC ($9.80B). Insider activity: Net Seller (2 buys, 18 sells). 10 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 35895583.00 | $9.80B | 2025-12-31 |
| BlackRock, Inc. | 31448257.00 | $9.29B | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 23367282.00 | $6.90B | 2026-03-31 |
| STATE STREET CORP | 16055287.00 | $4.74B | 2026-03-31 |
| JPMORGAN CHASE & CO | 12209761.00 | $3.63B | 2026-03-31 |
| MORGAN STANLEY | 9406843.00 | $2.78B | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 9146888.00 | $2.70B | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 9029289.00 | $2.67B | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-25 | |
| Sell | null | 2026-06-25 | |
| Sell | null | 2026-06-25 | |
| Sell | null | 2026-06-25 | |
| Buy | null | 2026-06-25 | |
| Sell | null | 2026-06-25 | |
| Sell | null | 2026-06-25 | |
| Sell | null | 2026-06-25 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.