$CBOE

$335.25 -$5.17 (1.52%) Close

$CBOE Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 104.4M shares outstanding

Who owns CBOE?

By type of holder

Institutions 88.0% Insiders 0.3% Everyone else 11.8%

Concentration Top 10 holders own 43.2%

BlackRock, Inc. 9.8% · Vanguard Capital Management LLC 6.6%

Institutional ownership

88.0%

+0.4 pts vs last qtr

Institutional holders

985

-3 vs last qtr

Net shares bought

+386.7K

by institutions in Q2 2026

New / sold out

126 / 129

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Norges Bank NEW +1.4M
Jupiter Topco LLC NEW +1.3M

Biggest sellers in Q2 2026

Janus Henderson Group PLC SOLD OUT −1.3M
Alliancebernstein L.P. −993.7K

Who is planning to sell?

Notices of proposed sale, last 12 months

$2.89M

6 notices from 5 people

Shares covered

10.0K

0.01% of the company

Arranged in advance

24%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Fitzpatrick Edward J. Director $1.13M
Froetscher Janet P Director 10b5-1 $699K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+29.1%

+2.88% a year

Each share's claim on the business

−22.5%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$1.25B vs $337M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years79% 3–5 years8% 1–3 years6% Under 1 year7%

Quarterly turnover

12.6%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting CBOE on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	10.2M	9.77%	−313.2K (−3.0%)	≤2021	0.0%
Shares held by quarter Peak holding10.5M (Q1'26) Change over 8 quarters+54.3K Share of the company9.770% BlackRock, Inc.'s full portfolio →
VC Vanguard Capital Management LLC	6.8M	6.55%	+37.6K (+0.6%)	≤2021	0.0%
Shares held by quarter Peak holding6.8M (Q2'26) Change over 8 quarters+6.8M Share of the company6.550% Vanguard Capital Management LLC's full portfolio →

BlackRock, Inc.

10.2M

% of company

9.77%

Change vs last qtr

−313.2K (−3.0%)

Held since

≤2021

Vanguard Capital Management LLC

6.8M

% of company

6.55%

Change vs last qtr

+37.6K (+0.6%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Cboe Global Markets Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting CBOE on Form N-PORT; together they hold 36.8% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$806M	3.3M	3.18%	0.04%	June 30, 2026
V5 Vanguard 500 Index Fund Vanguard Index Funds	$658M	2.7M	2.60%	0.04%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$806M

% of company

3.18%

% of the fund

0.04%

As of

June 30, 2026

Vanguard 500 Index Fund

Vanguard Index Funds

Position value

$658M

% of company

2.60%

% of the fund

0.04%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Cboe Global Markets Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
IC Isaacson Christopher A Insider	50.1K	0.05%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.050% Isaacson Christopher A's insider activity →
TF Tomczyk Fredric J Insider	35.6K	0.03%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.030% Tomczyk Fredric J's insider activity →

Isaacson Christopher A

Insider

50.1K

% of company

0.05%

Change vs last qtr

—

Held since

—

Tomczyk Fredric J

Insider

35.6K

% of company

0.03%

Change vs last qtr

—

Held since

—

22 more holders behind a free account

See every insider and 5%+ holder of Cboe Global Markets Inc.

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