DXCM DexCom, Inc.
DexCom, Inc. (DXCM) Institutional Ownership
What the institutions did with DXCM last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended September 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BAILLIE GIFFORD & CO | 14.5M | 16.2% |
| GEODE CAPITAL MANAGEMENT, LLC | 12.5M | 13.9% |
| Amundi | 4.8M | 5.3% |
| Nuveen, LLC | 4.4M | 4.9% |
| UBS Group AG | 2.5M | 2.8% |
| Bank of New York Mellon Corp | 2.4M | 2.7% |
| FMR LLC | 2.3M | 2.6% |
| DIMENSIONAL FUND ADVISORS LP | 2.2M | 2.5% |
| DEUTSCHE BANK AG\ | 2.1M | 2.3% |
| BLAIR WILLIAM & CO/IL | 1.6M | 1.7% |
| Mitsubishi UFJ Asset Management Co., Ltd. | 1.4M | 1.5% |
| VICTORY CAPITAL MANAGEMENT INC | 1.3M | 1.5% |
| Stephens Investment Management Group LLC | 1.3M | 1.4% |
| Swedbank AB | 1.2M | 1.3% |
| BARCLAYS PLC | 1.2M | 1.3% |
| Thrivent Financial for Lutherans | 1.1M | 1.3% |
| CITIGROUP INC | 944.9K | 1.1% |
| Sumitomo Mitsui Trust Group, Inc. | 922.7K | 1.0% |
| Chicago Capital, LLC | 864.4K | 1.0% |
| DekaBank Deutsche Girozentrale | 813.9K | 0.9% |
| RHUMBLINE ADVISERS | 774.7K | 0.9% |
| Russell Investments Group, Ltd. | 748.4K | 0.8% |
| PRINCIPAL FINANCIAL GROUP INC | 655.4K | 0.7% |
| Employees Retirement System of Texas | 637.6K | 0.7% |
| VIRGINIA RETIREMENT SYSTEMS ET Al | 609.4K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| UBS Group AG | Reduced | 6.1M | 2.5M | -3.6M |
| Nuveen, LLC | Increased | 1.8M | 4.4M | +2.6M |
| Assenagon Asset Management S.A. | Reduced | 1.4M | 271.4K | -1.1M |
| Amundi | Reduced | 5.6M | 4.8M | -836.9K |
| Fisher Funds Management LTD | Reduced | 841.0K | 304.9K | -536.0K |
| Retirement Systems of Alabama | Increased | 81.1K | 539.0K | +458.0K |
| FMR LLC | Increased | 1.9M | 2.3M | +404.4K |
| JUPITER ASSET MANAGEMENT LTD | New | 0 | 397.3K | +397.3K |
| DEUTSCHE BANK AG\ | Reduced | 2.4M | 2.1M | -349.9K |
| FIL Ltd | Reduced | 558.5K | 237.6K | -320.8K |
| BAILLIE GIFFORD & CO | Reduced | 14.8M | 14.5M | -280.0K |
| Smith Group Asset Management, LLC | Reduced | 701.3K | 433.1K | -268.2K |
| AustralianSuper Pty Ltd | Increased | 15.7K | 266.6K | +250.9K |
| ING GROEP NV | Reduced | 613.7K | 382.1K | -231.6K |
| Russell Investments Group, Ltd. | Reduced | 973.8K | 748.4K | -225.4K |
| PRINCIPAL FINANCIAL GROUP INC | Reduced | 876.7K | 655.4K | -221.3K |
| VOYA INVESTMENT MANAGEMENT LLC | Increased | 232.3K | 439.2K | +206.9K |
| Pictet Asset Management Holding SA | Reduced | 661.2K | 477.5K | -183.8K |
| BARCLAYS PLC | Increased | 999.6K | 1.2M | +179.0K |
| Fideuram Asset Management (Ireland) dac | Increased | 71.4K | 234.6K | +163.2K |
| LGT CAPITAL PARTNERS LTD. | Reduced | 340.7K | 196.5K | -144.1K |
| Gradient Investments LLC | Reduced | 372.5K | 236.3K | -136.3K |
| FIDEURAM - INTESA SANPAOLO PRIVATE BANKING S.P.A. | Reduced | 216.7K | 86.1K | -130.6K |
| Candriam S.C.A. | Reduced | 160.3K | 35.6K | -124.7K |
| DANSKE BANK A/S | Increased | 195.0K | 311.0K | +116.0K |
| BLAIR WILLIAM & CO/IL | Reduced | 1.7M | 1.6M | -113.9K |
| KBC Group NV | Increased | 297.4K | 406.4K | +109.0K |
| Prospera Financial Services Inc | New | 0 | 108.8K | +108.8K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | Increased | 147.2K | 254.4K | +107.2K |
| Employees Retirement System of Texas | Increased | 538.9K | 637.6K | +98.7K |
| Bank of New York Mellon Corp | Increased | 2.3M | 2.4M | +96.3K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 2.1M | 2.2M | +93.9K |
| INTECH INVESTMENT MANAGEMENT LLC | Increased | 24.7K | 117.8K | +93.0K |
| BANK OF MONTREAL /CAN/ | Reduced | 426.5K | 333.6K | -92.8K |
| AIA Group Ltd | Sold Out | 91.2K | 0 | -91.2K |
| SEI INVESTMENTS CO | Increased | 197.7K | 288.1K | +90.3K |
| C WorldWide Group Holding A/S | Reduced | 484.0K | 394.0K | -90.0K |
| PFA Pension, Forsikringsaktieselskab | Increased | 1.2K | 87.5K | +86.3K |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY | Increased | 280.9K | 358.9K | +78.0K |
| Premier Fund Managers Ltd | Reduced | 134.7K | 56.9K | -77.8K |
| OneDigital Investment Advisors LLC | Reduced | 171.2K | 95.5K | -75.8K |
| Achmea Investment Management B.V. | New | 0 | 73.2K | +73.2K |
| VIRGINIA RETIREMENT SYSTEMS ET Al | Increased | 538.8K | 609.4K | +70.7K |
| Aberdeen Group plc | Reduced | 456.8K | 389.3K | -67.6K |
| Stephens Investment Management Group LLC | Increased | 1.2M | 1.3M | +66.6K |
| STRS OHIO | Increased | 188.6K | 243.4K | +54.8K |
| Genus Capital Management Inc. | New | 0 | 54.1K | +54.1K |
| TOBAM | Reduced | 51.5K | 538 | -50.9K |
| LPL Financial LLC | Reduced | 344.5K | 294.6K | -49.9K |
| Mitsubishi UFJ Asset Management Co., Ltd. | Increased | 1.3M | 1.4M | +49.8K |
| Cambridge Investment Research Advisors, Inc. | Reduced | 90.0K | 45.6K | -44.4K |
| VICTORY CAPITAL MANAGEMENT INC | Reduced | 1.4M | 1.3M | -44.2K |
| CIBC WORLD MARKET INC. | Reduced | 99.2K | 59.4K | -39.8K |
| Apollon Wealth Management, LLC | Reduced | 133.9K | 94.3K | -39.6K |
| SHAKER INVESTMENTS LLC/OH | Increased | 16.6K | 54.9K | +38.3K |
| Compagnie Lombard Odier SCmA | Reduced | 194.1K | 155.9K | -38.3K |
| ASR Vermogensbeheer N.V. | Increased | 3.8K | 41.5K | +37.7K |
| LBP AM SA | Reduced | 48.9K | 11.5K | -37.5K |
| DekaBank Deutsche Girozentrale | Reduced | 850.3K | 813.9K | -36.5K |
| BRIGHT ROCK CAPITAL MANAGEMENT, LLC | New | 0 | 36.0K | +36.0K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.