Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in DXCM held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 39.0M | $2.45B | -2.2% | 10.098% | 0.04% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 25.0M | $1.57B | — | 6.484% | 0.04% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 19.2M | $1.21B | — | 4.981% | 0.06% |
| 4 | STATE STREET CORP | 17.9M | $1.13B | -0.9% | 4.648% | 0.04% |
| 5 | BAILLIE GIFFORD & CO | 15.6M | $979.7M | +0.3% | 4.043% | 1.00% |
| 6 | ALLIANCEBERNSTEIN L.P. | 12.9M | $857.7M | +49.9% | 3.349% | 0.28% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 12.3M | $772.9M | +12.2% | 3.200% | 0.05% |
| 8 | UBS ASSET MANAGEMENT AMERICAS INC | 9.7M | $612.1M | +21.8% | 2.526% | 0.13% |
| 9 | WELLINGTON MANAGEMENT GROUP LLP | 9.3M | $585.7M | +203.4% | 2.417% | 0.11% |
| 10 | Amundi | 6.3M | $397.7M | +28.8% | 1.641% | 0.11% |
| 11 | Invesco Ltd. | 5.6M | $351.4M | +5.3% | 1.450% | 0.05% |
| 12 | UBS Group AG | 5.3M | $335.2M | +62.0% | 1.383% | 0.05% |
| 13 | MORGAN STANLEY | 5.0M | $316.6M | -0.6% | 1.307% | 0.02% |
| 14 | AMERIPRISE FINANCIAL INC | 4.2M | $266.3M | +99.3% | 1.099% | 0.06% |
| 15 | CIBC Bancorp USA Inc. | 4.2M | $264.7M | — | 1.093% | 0.36% |
| 16 | GOLDMAN SACHS GROUP INC | 3.7M | $230.2M | -2.7% | 0.950% | 0.03% |
| 17 | NORTHERN TRUST CORP | 3.4M | $215.1M | +1.4% | 0.888% | 0.03% |
| 18 | DEUTSCHE BANK AG\ | 3.4M | $213.1M | -21.6% | 0.879% | 0.07% |
| 19 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 3.2M | $199.4M | +3.1% | 0.823% | 0.03% |
| 20 | AMERICAN CENTURY COMPANIES INC | 2.9M | $184.9M | +31.8% | 0.763% | 0.10% |
| 21 | BANK OF AMERICA CORP /DE/ | 2.9M | $184.2M | -23.1% | 0.760% | 0.01% |
| 22 | RAYMOND JAMES FINANCIAL INC | 2.8M | $174.2M | +13.7% | 0.722% | 0.05% |
| 23 | CITADEL ADVISORS LLC | 2.7M | $168.7M | +55.0% | 0.696% | 0.08% |
| 24 | JANUS HENDERSON GROUP PLC | 2.6M | $166.1M | +32.3% | 0.685% | 0.08% |
| 25 | Legal & General Group Plc | 2.6M | $163.9M | +0.2% | 0.676% | 0.04% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in DXCM — a direct measure of their conviction.
Filings activity in DXCM during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 942 | +5.3% | 76.00% | 5.12 pp | $22.10B | 6.3% |
| Q4 2025 | 895 | +1.5% | 81.12% | 1.94 pp | $23.59B | 2.3% |
| Q3 2025 | 882 | 4.2% | 83.06% | 23.75 pp | $24.16B | 22% |
| Q2 2025 | 921 | +2.3% | 106.81% | +24.77 pp | $31.06B | +30% |
| Q1 2025 | 900 | 1.2% | 82.04% | 8.39 pp | $23.86B | 9.3% |
| Q4 2024 | 911 | +6.7% | 90.43% | +11.71 pp | $26.30B | +15% |
| Q3 2024 | 854 | 11% | 78.72% | 63.64 pp | $22.89B | 45% |
| Q2 2024 | 961 | — | 142.36% | — | $41.40B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying DXCM stock.
Based on Q1 2026 13F filings, institutional ownership of DexCom, Inc. stands at 76.0%, held across 942 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of DXCM, with approximately 38,964,371 shares worth $2.45B as of Q1 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of DXCM, including CITADEL ADVISORS LLC.
Our composite Smart Money Score for DXCM is 45 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
167 institutions opened new positions in DXCM during Q1 2026, while 120 fully exited. 251 added to existing positions and 520 trimmed.
DXCM institutional ownership fell by 5.12 percentage points quarter-over-quarter, with a net change of +47 holders.
The top 10 institutions account for 47.8% of all reported 13F value in DXCM, and the top 25 account for 63.3%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
DexCom, Inc. (DXCM) Institutional Ownership