CME Group Inc
Ownership
Ownership Structure
Who owns CME Group Inc (CME)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.6% of the shares are freely tradable; institutional investors hold 92.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 8.75 | 31,448,257 | +1.2 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.50 | 23,367,282 | +0.0 | 03/31/2026 |
| State Street Corp | 4.47 | 16,055,287 | -0.6 | 03/31/2026 |
| JPMorgan Chase & Co | 3.40 | 12,209,761 | +10.0 | 03/31/2026 |
| Morgan Stanley - Brokerage Accounts | 2.62 | 9,406,843 | +12.5 | 03/31/2026 |
| Geode Capital Management, LLC | 2.54 | 9,146,888 | -1.9 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 2.51 | 9,029,289 | +0.0 | 03/31/2026 |
| Capital World Investors | 1.90 | 6,822,315 | -1.6 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.21 | 11,537,485 | +0.3 | 07/31/2026 |
| Vanguard 500 Index Investor | 2.65 | 9,512,564 | +1.1 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Duffy Terrence A | Chairman and CEO | 40,630 | 11,018,856 $ | Sep 10, 2026 | direct |
| Cook Elizabeth A | Director | 17,916 | 4,858,819 $ | Sep 14, 2026 | indirect |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 14, 2026 | Cook Elizabeth A | Director | Sell | 500 | 280.11 | 140,055 |
| Sep 10, 2026 | Duffy Terrence A | Chairman and CEO | Sell | 628 | 275.03 | 172,719 |
| Sep 10, 2026 | Duffy Terrence A | Chairman and CEO | Sell | 14,372 | 274.41 | 3,943,821 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.