DexCom, Inc. (DXCM) Shareholders & Insider Trades
DexCom shareholders at a glance
The largest holder of DexCom stock is BlackRock Advisors LLC, with 28.6 million shares (7.59% of the company), worth about $2.61 billion as of September 25, 2026. The 10 largest holders together own 44.0%.
In Q2 2026, 1,035 institutional holdings reports listed shares worth $29.10 billion.
Insiders reported 71 transactions in the last two years: 33 sales worth $14.11 million and 1 purchase. The newest one on file is from May 15, 2026 (Brown Michael Jon, Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 15, 2026.
DexCom, Inc.
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest DexCom shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Advisors LLC | 28.6 million | 7.59% | $2.6B |
| Vanguard Capital Management LLC | 25.2 million | 6.68% | $2.3B |
| Vanguard Portfolio Management LLC | 19.7 million | 5.21% | $1.8B |
| State Street Corporation | 18.4 million | 4.87% | $1.7B |
| Invesco Advisers, Inc. | 15.3 million | 4.05% | $1.4B |
| Baillie Gifford & Co. | 14.8 million | 3.92% | $1.3B |
| Geode Capital Management LLC | 12.4 million | 3.29% | $1.1B |
| AllianceBernstein LP | 11.7 million | 3.10% | $1.1B |
| UBS Asset Management (UK) Ltd. | 11.3 million | 2.99% | $1.0B |
| BlackRock Life Ltd. | 8.5 million | 2.26% | $778.0M |
As of September 25, 2026.
DexCom institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 1,035 | – | $29.1B |
| Q1 2026 | 1,017 | 372.0 million | $23.4B |
| Q4 2025 | 999 | 376.0 million | $24.9B |
| Q3 2025 | 994 | 375.0 million | $24.9B |
| Q2 2025 | 1,024 | 374.0 million | $32.3B |
| Q1 2025 | 1,012 | 365.0 million | $24.9B |
| Q4 2024 | 1,034 | 361.0 million | $28.1B |
| Q3 2024 | 974 | 368.0 million | $24.5B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
DexCom insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Brown Michael Jon | May 15, 2026 | Officer | Sale at price 59.91 per share. | $101,847 |
| Heller Bridgette P | May 12, 2026 | Director | Sale at price 60.01 per share. | $60,730 |
| Altman Steven R | May 8, 2026 | Director | Stock Gift at price 0.00 per share. | – |
| Foletta Mark G | May 8, 2026 | Director | Stock Gift at price 0.00 per share. | – |
| Augustinos Nicholas | May 8, 2026 | Director | Stock Gift at price 0.00 per share. | – |
| Collins Richard Alexander | May 8, 2026 | Director | Stock Gift at price 0.00 per share. | – |
| Brown Michael Jon | Apr 15, 2026 | Officer | Sale at price 63.04 per share. | $107,168 |
| Brown Michael Jon | Mar 16, 2026 | Officer | Sale at price 64.85 per share. | $110,245 |
| Sylvain Jereme M | Mar 6, 2026 | Chief Financial Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Leach Jacob Steven | Mar 6, 2026 | Chief Executive Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Stern Sadie | Mar 6, 2026 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Sayer Kevin R | Mar 6, 2026 | Officer and Director | Stock Award(Grant) at price 0.00 per share. | – |
Newest 12 of 71 insider transactions in the last two years.
Questions and answers
Who owns the most DexCom stock?
BlackRock Advisors LLC, with 7.59% of the company (as of September 25, 2026). Next: Vanguard Capital Management LLC (6.68%) and Vanguard Portfolio Management LLC (5.21%).
How many institutions own DexCom stock?
1,035 institutional holdings reports listed DexCom shares in Q2 2026 worth $29.10 billion.
Are DexCom insiders buying or selling the stock?
In the last two years insiders reported 33 sales and 1 purchase (71 transactions in all); the newest on file is from May 15, 2026.
