Dexcom DXCM Institutional Ownership

Updated Oct 11, 2026

Dexcom Inc (NASDAQ:DXCM) appeared in the 13F filings of 971 institutional investors for the quarter ended June 30, 2026.

• Total shares held in DXCM rose 6.27% from Q1 2026; the number of holders rose 3.52% from Q2 2025.
• Looking at the 971 holders of DXCM individually, 517 added to their positions, 343 reduced their stakes and 111 left their positions unchanged.
• Institutional investors held 385.93Mn shares of Dexcom in total at the end of Q2 2026, up 22.77Mn from the prior quarter and up 27.09Mn from a year earlier.
• BlackRock, Inc. held the largest position in DXCM at 38.24Mn shares as of June 30, 2026.
• Among existing holders, the largest additions to Dexcom in Q2 2026 came from Invesco Ltd. (+9.69Mn shares), Arrowstreet Capital, Limited Partnership (+4.33Mn shares), Castle Hook Partners LP (+3.07Mn shares), UBS Group AG (+1.72Mn shares) and Massachusetts Financial Services Co (+1.63Mn shares).
• The largest position reductions in DXCM for Q2 2026 were by JPMorgan Chase & Co (-2.67Mn shares), Toronto Dominion Bank (-1.29Mn shares), SG Americas Securities, LLC (-1.25Mn shares), AllianceBernstein L.P. (-1.23Mn shares) and Millennium Management LLC (-1.23Mn shares).
• Dexcom's 10 largest institutional shareholders as of Q2 2026 were BlackRock, Inc. (38.24Mn shares), Vanguard Capital Management LLC (25.21Mn shares), Vanguard Portfolio Management LLC (19.66Mn shares), State Street Corp (18.38Mn shares), Invesco Ltd. (15.29Mn shares), Baillie Gifford & Co (14.8Mn shares), Geode Capital Management, LLC (12.43Mn shares), AllianceBernstein L.P. (11.69Mn shares), UBS Asset Management Americas (11.26Mn shares) and Wellington Management Group LLP (8.53Mn shares), per Business Quant data.