Cboe Global Markets
CBOE · Cboe
Who owns CBOE
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 37.9% of CBOE’s shares.
- BlackRock Institutional Trust Company, N.A.6.8%
- Vanguard Capital Management, LLC6.5%
- Vanguard Portfolio Management, LLC5.0%
- State Street Investment Management (US)4.8%
- Next 6 largest institutions14.7%
- All other shareholders62.1%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 7.12M | 6.81% |
| Vanguard Capital Management, LLC | 6.84M | 6.53% |
| Vanguard Portfolio Management, LLC | 5.26M | 5.02% |
| State Street Investment Management (US) | 5.05M | 4.82% |
| Fidelity Management & Research Company LLC | 4.21M | 4.02% |
| AllianceBernstein L.P. | 4.07M | 3.89% |
| Geode Capital Management, L.L.C. | 3.10M | 2.96% |
| Norges Bank Investment Management (NBIM) | 1.41M | 1.35% |
| Invesco Capital Management LLC | 1.31M | 1.25% |
| T. Rowe Price Investment Management, Inc. | 1.30M | 1.24% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 3.33M | 3.18% |
| Vanguard 500 Index Fund | 2.75M | 2.63% |
| Vanguard Mid-Cap Index Fund | 2.26M | 2.16% |
| Fidelity Contrafund | 1.52M | 1.45% |
| iShares Core S&P 500 ETF | 1.41M | 1.35% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $699.32K (2 trades) of CBOE on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Tomczyk Fredric J | Option exercise | 14.82K | — |
| Tomczyk Fredric J | Tax withholding | 14.82K | $4.41M |
| Tomczyk Fredric J | Option exercise | 14.82K | $4.41M |
| Duinstra Boudewijn | Award | 1.07K | — |
| Duinstra Boudewijn | Award | 1.33K | — |
| Fischer Heidi | Award | 1.12K | — |
| Fischer Heidi | Award | 1.78K | — |
| Froetscher Janet P | Sale | 937 | $261.38K |
| Tomczyk Fredric J | Tax withholding | 337 | $83.48K |
| Wilkinson Allen | Award | 166 | — |
Congressional trades
Disclosed by members of Congress over the last 12 months
| Member | Type | Amount | Traded |
|---|---|---|---|
| John BoozmanSenator | Sale (Full) | $1K–$15K | Jul 31, 2026 |
| Alan ArmstrongSenator | Purchase | $1K–$15K | Mar 27, 2026 |
| Gil CisnerosHouse | Sale | $1K–$15K | Dec 19, 2025 |
| Gil CisnerosHouse | Purchase | $1K–$15K | Nov 12, 2025 |
Short interest
Settled Sep 30, 2026
- Shares short
- 3.33M
- Days to cover
- 2.59
- % of shares outstanding
- 3.18%
- Average daily volume
- 1.28M
- Change since last report
- +7.2%
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