DXCM · Insider trading · 13F holders · Congress trades
Dexcom Inc (DXCM)
Who is buying and selling DXCM: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 65
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $4.9M
- Congress trades, 12 months
- 6
DXCM at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 7 DXCM insiders filed 11 sales worth $4.9M on SEC Form 4, and no open-market purchases; 11 of the sales were pre-planned under Rule 10b5-1.
- 65 13F filers hold DXCM among their 50 largest positions, worth $2.7B combined. The biggest bets by portfolio weight are Tri Locum Partners LP (6.8%), Bridger Management, LLC (4.6%) and Parkman Healthcare Partners LLC (3.7%). In their latest 13Fs, 1 manager opened a new position and 10 added to one.
- Members of Congress have disclosed 31 DXCM trades since 2015, 3 purchases and 3 sales in the past year; the latest was Tina Smith (D-MN), selling $100K–250K on May 7, 2026.
- DXCM last closed at $79.93 on Oct 29, 2026.
DXCM insider trading
Between Aug 1, 2026 and Oct 29, 2026, 7 DXCM insiders filed 11 sales worth $4.9M on SEC Form 4, and no open-market purchases; 11 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Oct 28, 2026 | Stern Sadie | EVP Chief People & Culture Off | Sale10b5-1 | 2,565 | $78.62 | $202K | SEC |
| Oct 19, 2026 | Brown Michael Jon | EVP Chief Legal Compliance Off | Sale10b5-1 | 1,700 | $85.48 | $145K | SEC |
| Sep 30, 2026 | Stern Sadie | EVP Chief People & Culture Off | Sale10b5-1 | 2,565 | $86.15 | $221K | SEC |
| Sep 16, 2026 | Augustinos Nicholas | Director | Sale10b5-1 | 8,089 | $84.04 | $680K | SEC |
| Sep 16, 2026 | Brown Michael Jon | EVP Chief Legal Compliance Off | Sale10b5-1 | 1,700 | $84.04 | $143K | SEC |
| Sep 14, 2026 | Sylvain Jereme M | EVP, Chief Financal Officer | Sale10b5-1 | 3,638 | $83.27 | $303K | SEC |
| Aug 28, 2026 | Stern Sadie | EVP Chief People & Culture Off | Sale10b5-1 | 2,565 | $88.37 | $227K | SEC |
| Aug 24, 2026 | Sayer Kevin R | Executive Chair, Director | Sale10b5-1 | 26,756 | $90.01 | $2.4M | SEC |
| Aug 17, 2026 | Brown Michael Jon | EVP Chief Legal Compliance Off | Sale10b5-1 | 1,700 | $91.93 | $156K | SEC |
| Aug 13, 2026 | Heller Bridgette P | Director | Sale10b5-1 | 1,012 | $88.29 | $89K | SEC |
| Aug 4, 2026 | Foletta Mark G | Director | Sale10b5-1 | 4,000 | $82.66 | $331K | SEC |
Who owns DXCM? Hedge funds and superinvestors
65 13F filers hold DXCM among their 50 largest positions, worth $2.7B combined. The biggest bets by portfolio weight are Tri Locum Partners LP (6.8%), Bridger Management, LLC (4.6%) and Parkman Healthcare Partners LLC (3.7%). In their latest 13Fs, 1 manager opened a new position and 10 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Baillie Gifford & CoHedge fund | 0.9% | $996.9M | 14,801,590 | -5.1% shares | Q2 2026 |
| Castle Hook Partners LPHedge fund | 2.8% | $260.7M | 3,870,342 | +382.7% shares | Q2 2026 |
| Employees Provident Fund BoardAsset manager | 0.8% | $147.5M | 2,190,029 | +0.0% shares | Q2 2026 |
| Nomura Holdings IncBroker-dealer | 0.5% | $115.1M | 1,709,370 | — | Q2 2026 |
| Dsm Capital Partners LLCAsset manager | 1.6% | $91.5M | 1,359,135 | -29.4% shares | Q2 2026 |
| Nearwater Capital Markets, LtdAsset manager | 1.5% | $84.2M | 1,250,000 | — | Q2 2026 |
| Stephens Investment Management Group LLCMutual fund manager | 0.9% | $81.1M | 1,204,553 | +12.1% shares | Q2 2026 |
| Intermede Investment Partners LtdInstitutional asset manager | 3.2% | $74.9M | 818,840 | -4.6% shares | Q2 2026 |
| Chicago Capital, LLCWealth manager | 1.7% | $74.6M | 864,397 | -0.3% shares | Q3 2026 |
| Bellevue Group AGInvestment manager | 1.2% | $55.4M | 822,489 | +4.3% shares | Q2 2026 |
| Tri Locum Partners LPHedge fund | 6.8% | $55.3M | 820,479 | +17.5% shares | Q2 2026 |
| Peregrine Capital Management LLCAsset manager | 1.5% | $44.8M | 664,581 | +7.8% shares | Q2 2026 |
| Susquehanna Portfolio Strategies, LLCBroker-dealer | 0.7% | $41.2M | 612,127 | — | Q2 2026 |
| Smith Group Asset Management, LLCWealth manager | 2.4% | $37.4M | 433,114 | -38.2% shares | Q3 2026 |
| Parkman Healthcare Partners LLCHedge fund | 3.7% | $36.0M | 534,767 | -22.5% shares | Q2 2026 |
| C WorldWide Group Holding A/SInvestment manager | 0.8% | $32.6M | 484,000 | +0.0% shares | Q2 2026 |
| Provident Investment Management, Inc.Wealth manager | 3.2% | $31.9M | 369,810 | -3.1% shares | Q3 2026 |
| Sirios Capital Management L PHedge fund | 3.4% | $28.3M | 420,418 | -1.8% shares | Q2 2026 |
| Fisher Funds Management LTDAsset manager | 0.8% | $26.3M | 304,933 | -63.7% shares | Q3 2026 |
| Voleon Capital Management LPHedge fund | 0.5% | $24.7M | 366,828 | -30.2% shares | Q2 2026 |
| Aristotle Atlantic Partners, LLCAsset manager | 1.0% | $23.5M | 349,417 | +38.9% shares | Q2 2026 |
| One Way Holdings LLCWealth manager | 1.0% | $23.3M | 269,752 | -5.4% shares | Q3 2026 |
| Rock Springs Capital Management LPHedge fund | 1.1% | $23.1M | 343,000 | -3.5% shares | Q2 2026 |
| Lgt Capital Partners Ltd.Hedge fund | 1.2% | $22.9M | 340,670 | +37.8% shares | Q2 2026 |
| Beacon Investment Advisory Services, Inc.Wealth manager | 0.8% | $20.4M | 236,356 | -2.6% shares | Q3 2026 |
| Fideuram Asset Management (Ireland) dacAsset manager | 0.4% | $19.2M | 234,586 | — | Q3 2026 |
| MayTech Global Investments, LLCWealth manager | 2.1% | $19.1M | 283,168 | -5.5% shares | Q2 2026 |
| Motley Fool Asset Management LLCMutual fund manager | 0.6% | $16.9M | 195,487 | -4.9% shares | Q3 2026 |
| MirovaHedge fund | 0.6% | $16.4M | 243,519 | -16.8% shares | Q2 2026 |
| Isthmus Partners, LLCWealth manager | 1.5% | $16.0M | 185,580 | -0.4% shares | Q3 2026 |
The 30 largest of 65 positions, by value. Each manager counts with its latest 13F (Q3 2026: 22, Q2 2026: 42, Q1 2026: 1). Screen DXCM in the grand portfolio →
DXCM stock trades by members of Congress
Members of Congress have disclosed 31 DXCM trades since 2015, 3 purchases and 3 sales in the past year; the latest was Tina Smith (D-MN), selling $100K–250K on May 7, 2026.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| May 10, 2026 | Tina SmithD-MN · Senate | Sale | $100K–250K | May 7, 2026 | +39.3% |
| May 10, 2026 | Tina SmithD-MN · Senate | Sale | $100K–250K | Apr 29, 2026 | +47.4% |
| Feb 15, 2026 | John BoozmanR-AR · Senate | Buy | $1K–15K | Jan 26, 2026 | +15.7% |
| Jun 22, 2025 | Jefferson ShreveR-IN · House | Sale | $15K–50K | May 12, 2025 | -0.8% |
| Jun 22, 2025 | Jefferson ShreveR-IN · House | Buy | $15K–50K | May 8, 2025 | -1.2% |
| Jun 9, 2025 | Robert P. Bresnahan, Jr.R-PA · House | Buy | $1K–15K | May 15, 2025 | -1.6% |
| May 8, 2025 | Jefferson ShreveR-IN · House | Sale | $15K–50K | Apr 7, 2025 | +36.8% |
| Apr 28, 2025 | Robert P. Bresnahan, Jr.R-PA · House | Sale | $1K–15K | Apr 8, 2025 | +39.0% |
| Mar 27, 2025 | Robert P. Bresnahan, Jr.R-PA · House | Buy | $1K–15K | Feb 25, 2025 | -4.5% |
| Jan 15, 2025 | Kevin HernR-OK · House | Sale | $50K–100K | Dec 31, 2024 | +8.4% |
| Oct 15, 2023 | Josh GottheimerD-NJ · House | Sale | $1K–15K | Sep 12, 2023 | -19.6% |
| Sep 16, 2023 | Josh GottheimerD-NJ · House | Sale | $1K–15K | Aug 21, 2023 | -19.4% |
| Oct 16, 2022 | Josh GottheimerD-NJ · House | Sale | $1K–15K | Sep 28, 2022 | +1.2% |
| Sep 23, 2021 | Thomas R. SuozziD-NY · House | Sale | $15K–50K | Jun 3, 2021 | -10.5% |
| Sep 23, 2021 | Thomas R. SuozziD-NY · House | Buy | $1K–15K | Jan 10, 2020 | +42.2% |
| Sep 23, 2021 | Thomas R. SuozziD-NY · House | Buy | $15K–50K | Jan 9, 2020 | +41.0% |
| Sep 15, 2021 | Kevin HernR-OK · House | Buy | $100K–250K | Jul 1, 2021 | -21.0% |
| Mar 16, 2021 | Peter MeijerR-MI · House | Sale | $1K–15K | Feb 16, 2021 | -16.6% |
| Jan 11, 2021 | Gilbert Ray Cisneros, Jr.D-CA · House | Sale | $1K–15K | Dec 22, 2020 | -4.8% |
| Jan 7, 2021 | Josh GottheimerD-NJ · House | Sale | $1K–15K | Dec 24, 2020 | -5.0% |
12 members have traded DXCM: Tina Smith, John Boozman, Jefferson Shreve, Robert P. Bresnahan, Jr., Kevin Hern, Josh Gottheimer, Thomas R. Suozzi, Peter Meijer and others.
DXCM questions and answers
Are insiders buying DXCM stock?
Between Aug 1, 2026 and Oct 29, 2026, 7 DXCM insiders filed 11 sales worth $4.9M on SEC Form 4, and no open-market purchases; 11 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own DXCM?
65 13F filers hold DXCM among their 50 largest positions, worth $2.7B combined. The biggest bets by portfolio weight are Tri Locum Partners LP (6.8%), Bridger Management, LLC (4.6%) and Parkman Healthcare Partners LLC (3.7%). In their latest 13Fs, 1 manager opened a new position and 10 added to one.
Has Congress traded DXCM?
Members of Congress have disclosed 31 DXCM trades since 2015, 3 purchases and 3 sales in the past year; the latest was Tina Smith (D-MN), selling $100K–250K on May 7, 2026.
Who is the largest holder of DXCM?
Among 13F filers, Baillie Gifford & Co reports the largest DXCM position, $996.9M (14,801,590 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Tri Locum Partners LP's: 6.8% of its portfolio.
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