Dexcom
DXCM · NASDAQ
Who owns DXCM
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 40.7% of DXCM’s shares.
- Vanguard Capital Management, LLC6.5%
- BlackRock Institutional Trust Company, N.A.6.4%
- Vanguard Portfolio Management, LLC5.1%
- State Street Investment Management (US)4.8%
- Next 6 largest institutions17.9%
- All other shareholders59.3%
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Capital Management, LLC | 25.21M | 6.53% |
| BlackRock Institutional Trust Company, N.A. | 24.75M | 6.41% |
| Vanguard Portfolio Management, LLC | 19.66M | 5.09% |
| State Street Investment Management (US) | 18.38M | 4.76% |
| Baillie Gifford & Co. | 14.80M | 3.84% |
| Invesco Capital Management LLC | 14.58M | 3.78% |
| Geode Capital Management, L.L.C. | 12.43M | 3.22% |
| AllianceBernstein L.P. | 11.69M | 3.03% |
| Wellington Management Company, LLP | 8.53M | 2.21% |
| Arrowstreet Capital, Limited Partnership | 6.87M | 1.78% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 12.29M | 3.18% |
| Vanguard 500 Index Fund | 10.13M | 2.63% |
| Vanguard Mid-Cap Index Fund | 8.35M | 2.16% |
| Invesco QQQ Trust | 8.30M | 2.15% |
| Vanguard Health Care Fund | 5.81M | 1.51% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $11.67M (23 trades) of DXCM on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| AUGUSTINOS NICHOLAS | Sale | 6.54K | $549.54K |
| Brown Michael Jon | Sale | 1.70K | $142.87K |
| AUGUSTINOS NICHOLAS | Sale | 1.55K | $130.23K |
| Sylvain Jereme M | Sale | 3.64K | $302.94K |
| Boehnlein Glenn S | Award | 5.84K | — |
| Stern Sadie | Sale | 2.56K | $226.67K |
| Leach Jacob Steven | Tax withholding | 1.45K | $133.99K |
| Sylvain Jereme M | Tax withholding | 1.45K | $133.99K |
| Brown Michael Jon | Tax withholding | 1.45K | $133.99K |
| Stern Sadie | Tax withholding | 1.45K | $133.99K |
Congressional trades
Disclosed by members of Congress over the last 12 months
| Member | Type | Amount | Traded |
|---|---|---|---|
| Tina SmithSenator | Sale (Full) | $100K–$250K | May 7, 2026 |
| Tina SmithSenator | Sale (Partial) | $100K–$250K | Apr 29, 2026 |
| Ro KhannaHouse | Purchase | $1K–$15K | Apr 13, 2026 |
| John BoozmanSenator | Purchase | $1K–$15K | Jan 26, 2026 |
| Michael McCaulHouse | Sale | $15K–$50K | Oct 27, 2025 |
Short interest
Settled Sep 30, 2026
- Shares short
- 14.02M
- Days to cover
- 3.16
- % of shares outstanding
- 3.63%
- Average daily volume
- 4.44M
- Change since last report
- −18.8%
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