DexCom Ownership | Who Owns DexCom?

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DexCom Ownership Summary

DexCom is owned by 34.41% institutional investors, 0.28% insiders, and 65.31% retail investors. Tudor investment corp et al is the largest institutional shareholder, holding 17.64% of DXCM shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 3.24% of its assets in DexCom shares.

DXCM Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	DexCom	34.41%	0.28%	65.31%
Sector	Healthcare Stocks	35.64%	12.08%	52.28%
Industry	Medical Device Stocks	36.89%	11.20%	51.91%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Tudor investment corp et al	69.15M	17.64%	$63.06M
Vanguard group	49.07M	12.55%	$3.26B
Blackrock funding, inc. /de	38.96M	10.08%	$2.45B
Blackrock	34.52M	8.85%	$3.91B
State street	17.93M	4.64%	$1.13B
Baillie gifford	15.60M	4.03%	$979.65M
Alliancebernstein	12.92M	3.34%	$857.74M
Geode capital management	12.35M	3.19%	$772.91M
Ubs asset management americas	9.75M	2.52%	$612.06M
Wellington management group llp	9.33M	2.41%	$585.69M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Iron triangle partners lp	850.00K	8.13%	$57.20M
Mig capital	605.55K	5.92%	$40.75M
Bridger management	101.89K	5.00%	$6.40M
Parkman healthcare partners	689.82K	4.47%	$43.32M
Sirios capital management l p	428.34K	3.26%	$26.90M
Aquila investment management	28.00K	2.98%	$3.17M
Brooktree capital management	50.28K	2.50%	$3.16M
Intermede investment partners	858.51K	2.50%	$53.91M
Maytech global investments	299.55K	2.29%	$18.81M
2xideas	89.98K	2.21%	$5.65M

Top Buyers

Holder	Shares	% Assets	Change
Tudor investment corp et al	69.15M	0.11%	69.15M
Norges bank	7.28M	0.05%	7.28M
Wellington management group llp	9.33M	0.11%	6.25M
Alliancebernstein	12.92M	0.28%	4.30M
Groupama asset managment	4.02M	0.09%	4.01M

Top Sellers

Holder	Shares	% Assets	Change
Sands capital management	-	-	-4.93M
Jennison associates	1.05M	0.05%	-4.74M
D. e. shaw	27.73K	0.00%	-3.91M
Nuveen	1.72M	0.03%	-2.91M
Artisan partners limited partnership	-	-	-2.52M

New Positions

Holder	Shares	% Assets	Change	Value
Tudor investment corp et al	69.15M	0.11%	69.15M	$63.06M
Norges bank	7.28M	0.05%	7.28M	$483.36M
Vanguard fiduciary trust	2.22M	0.04%	2.22M	$139.58M
Axa investment managers	1.67M	0.30%	1.67M	$112.20M
Iron triangle partners lp	850.00K	8.13%	850.00K	$57.20M

Sold Out

Holder	Change
Mendota financial group	-1.00
Koesten, hirschmann & crabtree	-1.00
Nemes rush group	-1.00
Ruedi wealth management	-1.00
Kozak & associates	-1.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	577	-41.06%	133,075,732	-63.66%	34	0.38%	297	-41.88%	191	-38.19%
Dec 31, 2025	684	-29.70%	264,734,378	-27.79%	67	0.77%	334	-24.43%	234	-32.76%
Sep 30, 2025	932	-5.48%	429,193,998	21.20%	109	1.34%	423	-8.24%	330	-2.08%
Jun 30, 2025	974	-1.02%	366,590,820	2.86%	93	1.13%	453	-6.41%	336	11.63%
Mar 31, 2025	972	-2.99%	356,341,011	0.06%	91	1.12%	474	-7.60%	299	-9.94%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard US Total Market Shares ETF	12.72M	3.24%	139.08K
Vanguard Total Stock Mkt Idx Inv	12.25M	3.18%	1.25K
Vanguard Institutional 500 Index Trust	11.11M	2.83%	76.09K
Vanguard 500 Index Investor	10.02M	2.60%	-50.85K
Vanguard Mid Cap Index Institutional	8.36M	2.17%	12.30K
Invesco QQQ Trust	8.19M	2.12%	-63.96K
VA CollegeAmerica Amcap 529A	6.37M	1.63%	336.08K
American Funds Growth Fund of Amer A	6.52M	1.63%	512.96K
Capital Group Growth Fnd of Amer Comp	6.52M	1.63%	512.96K
Vanguard Health Care Inv	6.06M	1.57%	6.06M

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jul 20, 2026	SAYER KEVIN R	Executive Chair	Sell	$2.04M
Jul 15, 2026	Brown Michael Jon	EVP Chief Legal Compliance Off	Sell	$126.51K
Jul 06, 2026	SAYER KEVIN R	Executive Chair	Sell	$1.93M
Jun 15, 2026	Brown Michael Jon	EVP Chief Legal Compliance Off	Sell	$128.44K
Jun 15, 2026	FOLETTA MARK G	-	Sell	$281.65K

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	-	3
2026 Q2	-	9
2026 Q1	-	2
2025 Q4	2	3
2025 Q3	-	10

DXCM Ownership FAQ

Who Owns DexCom?

DexCom shareholders are primarily institutional investors at 34.41%, followed by 0.28% insiders and 65.31% retail investors. The average institutional ownership in DexCom's industry, Medical Device Stocks, is 36.89%, which DexCom falls below.

Who owns the most shares of DexCom?

DexCom’s largest shareholders are Tudor investment corp et al (69.15M shares, 17.64%), Vanguard group (49.07M shares, 12.55%), and Blackrock funding, inc. /de (38.96M shares, 10.08%). Together, they hold 40.26% of DexCom’s total shares outstanding.

Does Blackrock own DexCom?

Yes, BlackRock owns 8.85% of DexCom, totaling 34.52M shares as of Jun 2024. This represents 0.09% of BlackRock's total assets, with a market value of 3.91B$. In the last quarter, BlackRock increased its holdings by 596.71K shares, a 1.76% change.

Who is DexCom’s biggest shareholder by percentage of total assets invested?

Iron triangle partners lp is DexCom’s biggest shareholder by percentage of total assets invested, with 8.13% of its assets in 850K DexCom shares, valued at 57.2M$.

Who is the top mutual fund holder of DexCom shares?

Vanguard US Total Market Shares ETF is the top mutual fund holder of DexCom shares, with 3.24% of its total shares outstanding invested in 12.72M DexCom shares.

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