$DXCM

$78.57 +$0.63 (0.81%) Close

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

Ownership

13F as of Q2 2026 · 377.4M shares outstanding

Who owns DXCM?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 46.5%

BlackRock, Inc. 10.1% · Vanguard Capital Management LLC 6.7%

Institutional ownership

100.0%

+1.4 pts vs last qtr

Institutional holders

974

+11 vs last qtr

Net shares bought

+12.3M

by institutions in Q2 2026

New / sold out

126 / 115

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Norges Bank NEW +6.9M
Arrowstreet Capital, Limited Partnership +4.3M

Biggest sellers in Q2 2026

Jpmorgan Chase & Co −2.7M
Janus Henderson Group PLC SOLD OUT −2.6M

Who is planning to sell?

Notices of proposed sale, last 12 months

$12.8M

28 notices from 9 people

Shares covered

166.2K

0.04% of the company

Arranged in advance

100%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Kevin R Sayer Officer 10b5-1 $8.3M
Michael Brown Officer 10b5-1 $1.02M

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, FY2020–FY2025

−3.5%

−0.72% a year

Each share's claim on the business

+3.7%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$2.5B vs $840M

over 6 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+ years80% 3–5 years3% 1–3 years8% Under 1 year9%

Quarterly turnover

11.8%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting DXCM on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	38.2M	10.13%	−720.2K (−1.8%)	≤2021	0.0%
Shares held by quarter Peak holding39.8M (Q4'25) Change over 8 quarters+3.2M Share of the company10.130% BlackRock, Inc.'s full portfolio →
VC Vanguard Capital Management LLC	25.2M	6.68%	+188.8K (+0.8%)	≤2021	0.0%
Shares held by quarter Peak holding25.2M (Q2'26) Change over 8 quarters+25.2M Share of the company6.680% Vanguard Capital Management LLC's full portfolio →

BlackRock, Inc.

38.2M

% of company

10.13%

Change vs last qtr

−720.2K (−1.8%)

Held since

≤2021

Vanguard Capital Management LLC

25.2M

% of company

6.68%

Change vs last qtr

+188.8K (+0.8%)

Held since

≤2021

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting DXCM on Form N-PORT; together they hold 40.0% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$825M	12.3M	3.25%	0.04%	June 30, 2026
V5 Vanguard 500 Index Fund Vanguard Index Funds	$674M	10.0M	2.65%	0.04%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$825M

% of company

3.25%

% of the fund

0.04%

As of

June 30, 2026

Vanguard 500 Index Fund

Vanguard Index Funds

Position value

$674M

% of company

2.65%

% of the fund

0.04%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Dexcom 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
LJ Leach Jacob Steven Insider	466.2K	0.12%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.120% Leach Jacob Steven's insider activity →
TE Topol Eric Insider	380.5K	0.10%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.100% Topol Eric's insider activity →

Leach Jacob Steven

Insider

466.2K

% of company

0.12%

Change vs last qtr

—

Held since

—

Topol Eric

Insider

380.5K

% of company

0.10%

Change vs last qtr

—

Held since

—

18 more holders behind a free account

See every insider and 5%+ holder of Dexcom Inc.

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