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 June 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 |
|---|---|---|
| BlackRock, Inc. | 38.2M | 9.9% |
| VANGUARD CAPITAL MANAGEMENT LLC | 25.2M | 6.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 19.7M | 5.1% |
| STATE STREET CORP | 18.4M | 4.8% |
| Invesco Ltd. | 15.3M | 4.0% |
| BAILLIE GIFFORD & CO | 14.8M | 3.8% |
| GEODE CAPITAL MANAGEMENT, LLC | 12.4M | 3.2% |
| ALLIANCEBERNSTEIN L.P. | 11.7M | 3.0% |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 11.3M | 2.9% |
| WELLINGTON MANAGEMENT GROUP LLP | 8.5M | 2.2% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 6.9M | 1.8% |
| NORGES BANK | 6.9M | 1.8% |
| UBS Group AG | 6.1M | 1.6% |
| Amundi | 5.6M | 1.4% |
| MORGAN STANLEY | 5.2M | 1.3% |
| AMERIPRISE FINANCIAL INC | 4.8M | 1.2% |
| Castle Hook Partners LP | 3.9M | 1.0% |
| GOLDMAN SACHS GROUP INC | 3.8M | 1.0% |
| FRANKLIN RESOURCES INC | 3.6M | 0.9% |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 3.6M | 0.9% |
| CIBC Bancorp USA Inc. | 3.5M | 0.9% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 3.4M | 0.9% |
| JPMORGAN CHASE & CO | 3.3M | 0.9% |
| NORTHERN TRUST CORP | 3.3M | 0.9% |
| AQR CAPITAL MANAGEMENT LLC | 3.2M | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 2.5M | 6.9M | +4.3M |
| Castle Hook Partners LP | Increased | 801.8K | 3.9M | +3.1M |
| JPMORGAN CHASE & CO | Reduced | 6.0M | 3.3M | -2.7M |
| UBS Group AG | Increased | 4.3M | 6.1M | +1.7M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Increased | 1.9M | 3.6M | +1.6M |
| Invesco Ltd. | Increased | 13.7M | 15.3M | +1.6M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Increased | 9.7M | 11.3M | +1.5M |
| Pacer Advisors, Inc. | Increased | 34.0K | 1.5M | +1.5M |
| NOMURA HOLDINGS INC | Increased | 285.0K | 1.7M | +1.4M |
| Capital World Investors | Sold Out | 1.4M | 0 | -1.4M |
| TORONTO DOMINION BANK | Reduced | 2.5M | 1.2M | -1.3M |
| Nearwater Capital Markets, Ltd | New | 0 | 1.3M | +1.3M |
| SG Americas Securities, LLC | Reduced | 2.1M | 818.9K | -1.2M |
| ALLIANCEBERNSTEIN L.P. | Reduced | 12.9M | 11.7M | -1.2M |
| MILLENNIUM MANAGEMENT LLC | Reduced | 1.6M | 395.4K | -1.2M |
| Squarepoint Ops LLC | Reduced | 1.2M | 18.4K | -1.1M |
| TWO SIGMA INVESTMENTS, LP | Reduced | 1.1M | 46.7K | -1.1M |
| AQR CAPITAL MANAGEMENT LLC | Increased | 2.2M | 3.2M | +1.1M |
| JENNISON ASSOCIATES LLC | Sold Out | 1.0M | 0 | -1.0M |
| MACKENZIE FINANCIAL CORP | Reduced | 1.2M | 197.1K | -1.0M |
| NEUBERGER BERMAN GROUP LLC | Reduced | 1.7M | 736.0K | -993.1K |
| FRANKLIN RESOURCES INC | Increased | 2.6M | 3.6M | +988.5K |
| Swedbank AB | Increased | 199.5K | 1.2M | +966.6K |
| DEUTSCHE BANK AG\ | Reduced | 3.4M | 2.4M | -957.2K |
| CITADEL ADVISORS LLC | Reduced | 2.1M | 1.2M | -880.1K |
| NATIONAL BANK OF CANADA /FI/ | Reduced | 1.9M | 1.1M | -805.5K |
| MIZUHO MARKETS AMERICAS LLC | Sold Out | 800.0K | 0 | -800.0K |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 9.3M | 8.5M | -798.8K |
| BAILLIE GIFFORD & CO | Reduced | 15.6M | 14.8M | -797.9K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 1.4M | 2.2M | +793.1K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | Increased | 152.0K | 918.6K | +766.6K |
| CIBC Bancorp USA Inc. | Reduced | 4.2M | 3.5M | -762.4K |
| Amundi | Reduced | 6.3M | 5.6M | -729.1K |
| BlackRock, Inc. | Reduced | 39.0M | 38.2M | -720.2K |
| GOLDMAN SACHS GROUP INC | Increased | 3.0M | 3.8M | +715.0K |
| Smith Group Asset Management, LLC | New | 0 | 701.3K | +701.3K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 1.6M | 2.3M | +667.6K |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Reduced | 1.7M | 999.9K | -666.5K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 378.7K | 1.0M | +665.2K |
| CAPITOLIS LIQUID GLOBAL MARKETS LLC | New | 0 | 664.6K | +664.6K |
| Capital International Investors | New | 0 | 662.0K | +662.0K |
| AMERIPRISE FINANCIAL INC | Increased | 4.2M | 4.8M | +580.0K |
| Balyasny Asset Management L.P. | Sold Out | 566.3K | 0 | -566.3K |
| DSM CAPITAL PARTNERS LLC | Reduced | 1.9M | 1.4M | -564.7K |
| Defilade Capital Management, L.P. | Sold Out | 538.8K | 0 | -538.8K |
| Atle Fund Management AB | Reduced | 584.3K | 71.8K | -512.5K |
| Blue Sparrow, LLC /DE | New | 0 | 480.6K | +480.6K |
| MARSHALL WACE, LLP | Increased | 68.2K | 532.8K | +464.6K |
| STATE STREET CORP | Increased | 17.9M | 18.4M | +446.0K |
| MACQUARIE GROUP LTD | Reduced | 703.0K | 265.5K | -437.6K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 19.2M | 19.7M | +436.6K |
| CI INVESTMENTS INC. | Increased | 872.6K | 1.3M | +415.1K |
| Sofinnova Investments, Inc. | Sold Out | 393.6K | 0 | -393.6K |
| Provident Investment Management, Inc. | New | 0 | 381.6K | +381.6K |
| BANK OF NOVA SCOTIA | Increased | 887.3K | 1.3M | +379.0K |
| PFA Pension, Forsikringsaktieselskab | Reduced | 345.0K | 1.2K | -343.8K |
| Assenagon Asset Management S.A. | Reduced | 1.7M | 1.4M | -332.0K |
| LMR Partners LLP | Reduced | 309.1K | 3.2K | -305.9K |
| RAYMOND JAMES FINANCIAL INC | Increased | 2.8M | 3.1M | +305.4K |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | 463.6K | 161.0K | -302.6K |
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.