Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
929 institutional managers reported holding DXCM for the quarter ended Mar 31, 2026. Together they hold about 91% of shares outstanding; the top 10 hold 46%. 137 opened new positions; 112 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 48.21M | 12.25% | $3.03B | trimmed -1.8% | ≤2013 |
| BlackRock | 38.96M | 9.90% | $2.45B | trimmed -2.2% | ≤2013 |
| State Street | 17.93M | 4.56% | $1.13B | trimmed -0.9% | ≤2013 |
| Baillie Gifford | 15.60M | 3.96% | $979.5M | unchanged | ≤2013 |
| UBS | 14.10M | 3.58% | $885.1M | added +42.1% | ≤2013 |
| AllianceBernstein | 12.92M | 3.28% | $811.5M | added +49.9% | ≤2013 |
| Geode Capital | 12.35M | 3.14% | $775.2M | added +12.2% | ≤2013 |
| Wellington Management | 9.33M | 2.37% | $585.6M | added +203.4% | ≤2013 |
| Amundi | 6.33M | 1.61% | $397.6M | added +28.8% | 2018 Q3 |
| Invesco | 5.59M | 1.42% | $351.3M | added +5.3% | ≤2013 |
| Morgan Stanley | 5.04M | 1.28% | $316.6M | trimmed -0.6% | ≤2013 |
| Ameriprise Financial INC | 4.24M | 1.08% | $266.3M | added +99.3% | ≤2013 |
| Cibc Bancorp USA INC. | 4.22M | 1.07% | $264.8M | added +31.7% | 2019 Q3 |
| BNP Paribas Financial Markets | 4.07M | 1.03% | $255.4M | added +9.9% | ≤2013 |
| Northern Trust | 3.43M | 0.87% | $215.1M | added +1.4% | ≤2013 |
| Deutsche Bank AG\ | 3.39M | 0.86% | $213.0M | trimmed -21.6% | ≤2013 |
| Charles Schwab Investment Management | 3.18M | 0.81% | $199.4M | added +3.1% | ≤2013 |
| Goldman Sachs | 3.04M | 0.77% | $191.1M | added +24.9% | ≤2013 |
| American Century Companies INC | 2.95M | 0.75% | $184.9M | added +31.8% | 2018 Q4 |
| Bank OF America CORP /DE/ | 2.93M | 0.74% | $184.2M | trimmed -23.1% | ≤2013 |
| Raymond James Financial INC | 2.78M | 0.71% | $174.7M | added +13.5% | ≤2013 |
| Janus Henderson | 2.64M | 0.67% | $166.1M | added +32.3% | 2015 Q3 |
| Legal & General Group PLC | 2.61M | 0.66% | $163.8M | unchanged | 2014 Q3 |
| Franklin Resources | 2.61M | 0.66% | $163.7M | trimmed -2.8% | ≤2013 |
| Arrowstreet Capital | 2.55M | 0.65% | $159.8M | added +100.4% | 2024 Q2 |
| Toronto Dominion Bank | 2.47M | 0.63% | $154.8M | added +980% | 2018 Q3 |
| Employees Provident Fund Board | 2.19M | 0.56% | $137.5M | unchanged | 2023 Q2 |
| AQR Capital | 2.17M | 0.55% | $136.5M | trimmed -30% | ≤2013 |
| BNY Mellon | 2.14M | 0.54% | $134.6M | trimmed -2.4% | ≤2013 |
| Citadel Advisors | 2.09M | 0.53% | $131.3M | added +2307.2% | ≤2013 |
| SG Americas Securities, LLC | 2.07M | 0.53% | $129.7M | added +281.7% | 2018 Q1 |
| Royal Bank OF Canada | 1.97M | 0.50% | $124.0M | trimmed -22.3% | ≤2013 |
| MFS Investment Management | 1.93M | 0.49% | $121.5M | added +143.8% | 2023 Q4 |
| Blair William & CO/IL | 1.93M | 0.49% | $121.0M | trimmed -3.1% | ≤2013 |
| DSM Capital Partners LLC (focused) | 1.92M | 0.49% | $120.8M | trimmed -18.3% | 2023 Q4 |
| Dimensional Fund Advisors | 1.90M | 0.48% | $119.0M | added +1.3% | ≤2013 |
| National Bank OF Canada /FI/ | 1.87M | 0.47% | $117.5M | added +312.7% | 2021 Q4 |
| Neuberger Berman Group LLC | 1.73M | 0.44% | $108.6M | trimmed -26.1% | 2014 Q4 |
| Nuveen | 1.72M | 0.44% | $108.3M | trimmed -62.8% | 2018 Q3 |
| Assenagon Asset Management S.a. | 1.72M | 0.44% | $108.0M | added +40.2% | 2019 Q4 |
| Mitsubishi UFJ Asset Management CO., LTD. | 1.72M | 0.44% | $107.9M | added +3.9% | 2016 Q2 |
| FMR (Fidelity) | 1.67M | 0.42% | $105.0M | added +28.8% | ≤2013 |
| Adage Capital Partners GP, L.l.c. | 1.67M | 0.42% | $104.6M | added +5% | 2020 Q1 |
| Millennium Management | 1.62M | 0.41% | $101.9M | added +2% | ≤2013 |
| Renaissance Technologies | 1.58M | 0.40% | $99.4M | added +9.6% | 2021 Q4 |
| T. Rowe Price | 1.45M | 0.37% | $90.8M | trimmed -1.6% | ≤2013 |
| Capital Group (American Funds) | 1.38M | 0.35% | $86.9M | unchanged | 2017 Q4 |
| Victory Capital Management INC | 1.22M | 0.31% | $76.4M | added +14% | 2014 Q4 |
| Mackenzie Financial CORP | 1.20M | 0.31% | $75.6M | trimmed -0.7% | ≤2013 |
| DNB Asset Management AS | 1.17M | 0.30% | $73.7M | trimmed -7.5% | 2019 Q4 |
Largest 50 of 929 shown; the full ranked, searchable register is at boothcheck.com/holders/DXCM. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.