DexCom Ownership | Who Owns DexCom?

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DexCom Ownership Summary

DexCom is owned by 109.46% institutional investors, 0.42% insiders. 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	109.46%	0.42%	-9.88%
Sector	Healthcare Stocks	42.54%	10.83%	46.63%
Industry	Medical Device Stocks	37.80%	10.13%	52.07%

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	49.46M	12.61%	$3.33B
Blackrock funding, inc. /de	38.82M	9.90%	$2.61B
Blackrock	34.52M	8.85%	$3.91B
State street	16.86M	4.30%	$1.13B
Baillie gifford	15.88M	4.05%	$1.07T
Geode capital management	10.96M	2.80%	$734.94M
Jennison associates	10.09M	2.57%	$678.98M
Nuveen asset management	8.14M	2.06%	$632.93M
Ubs asset management americas	7.48M	1.91%	$503.50M

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
Alta fox capital management	379.10K	5.69%	$25.51M
Prosight management, lp	195.22K	3.06%	$13.14M
Sirios capital management l p	340.17K	2.98%	$22.89M
Aquila investment management	28.00K	2.98%	$3.17M
Alphabet	1.04M	2.90%	$69.78M
Sofinnova investments	779.62K	2.87%	$52.46M
Ellerson group inc /adv	68.45K	2.87%	$4.61M
Dsm capital partners	2.53M	2.43%	$170.48M

Top Buyers

Holder	Shares	% Assets	Change
Tudor investment corp et al	69.15M	0.11%	69.15M
Norges bank	4.96M	0.05%	4.96M
Groupama asset managment	4.02M	0.09%	4.01M
Millennium management	3.08M	0.12%	2.73M
Holocene advisors, lp	2.44M	0.37%	2.44M

Top Sellers

Holder	Shares	% Assets	Change
Sands capital management	4.93M	0.92%	-5.01M
Capital research global investors	2.37M	0.03%	-3.04M
Artisan partners limited partnership	-	-	-2.52M
Axa	-	-	-2.17M
Marshall wace, llp	1.71M	0.12%	-2.11M

New Positions

Holder	Shares	% Assets	Change	Value
Tudor investment corp et al	69.15M	0.11%	69.15M	$63.06M
Norges bank	4.96M	0.05%	4.96M	$385.37M
Axa investment managers	1.67M	0.30%	1.67M	$112.20M
Iron triangle partners lp	850.00K	8.13%	850.00K	$57.20M
Vestal point capital, lp	650.00K	1.98%	650.00K	$43.74M

Sold Out

Holder	Change
Kozak & associates	-1.00
Ruedi wealth management	-1.00
Mendota financial group	-1.00
Redwood wealth management group	-2.00
Bellwether advisors	-2.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
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%
Dec 31, 2024	967	2.65%	354,943,145	-0.09%	90	1.11%	494	16.51%	320	-9.09%
Sep 30, 2024	932	-11.07%	355,032,357	-4.87%	90	0.98%	419	-22.41%	348	13.73%

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	12.32M	3.14%	-288.59K
Vanguard Institutional 500 Index Trust	11.11M	2.83%	76.09K
Vanguard 500 Index Investor	9.70M	2.47%	-1.42M
Vanguard Mid Cap Index Institutional	8.75M	2.23%	94.23K
Invesco QQQ Trust	8.08M	2.06%	56.07K
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
American Funds AMCAP A	5.79M	1.48%	-576.37K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Nov 14, 2025	Collins Richard Alexander	-	Sell	$171.60K
Nov 12, 2025	Heller Bridgette P	-	Sell	$58.77K
Nov 10, 2025	Leach Jacob Steven	President & COO	Buy	$863.14K
Nov 10, 2025	Leach Jacob Steven	President & COO	Buy	$138.56K
Nov 10, 2025	Collins Richard Alexander	-	Sell	$217.81K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	2	2
2025 Q3	-	10
2025 Q2	-	7
2025 Q1	-	14
2024 Q4	-	6

DXCM Ownership FAQ

Who Owns DexCom?

DexCom shareholders are primarily institutional investors at 109.46%, followed by 0.42% insiders and -9.88% retail investors. The average institutional ownership in DexCom's industry, Medical Device Stocks, is 37.80%, which DexCom exceeds.

Who owns the most shares of DexCom?

DexCom’s largest shareholders are Tudor investment corp et al (69.15M shares, 17.64%), Vanguard group (49.46M shares, 12.61%), and Blackrock funding, inc. /de (38.82M shares, 9.90%). Together, they hold 40.15% 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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