Alphatec Holdings ATEC Institutional Ownership

Updated Oct 11, 2026

Alphatec Holdings, Inc. (NASDAQ:ATEC) counted 267 institutional investors among its 13F-reported shareholders for the quarter ended June 30, 2026.

• Together they owned 71.24% of the outstanding stock in Q2 2026, down from 73.40% a quarter earlier.
• Total shares held in Alphatec Holdings fell 1.36% versus Q1 2026, while the number of holders rose 13.14% versus Q2 2025.
• Of these 267 holders, 146 added to their positions, 85 reduced their stakes and 36 left their positions unchanged.
• Combined, institutional investors held 111.54Mn shares of ATEC as of Q2 2026, down 1.54Mn from the prior quarter and up 12.68Mn from a year earlier.
• BlackRock, Inc. was the top holder of Alphatec Holdings as of June 30, 2026, with 11.33Mn shares, or 7.23% of shares outstanding.
• Holders that added the most shares of Alphatec Holdings in Q2 2026 were Braidwell LP (+4.36Mn shares), Citadel Advisors LLC (+1.6Mn shares), BlackRock, Inc. (+1.24Mn shares), Arrowstreet Capital, Limited Partnership (+1.06Mn shares) and AQR Capital Management LLC (+1Mn shares).
• On the other side, among holders that kept a position in Alphatec Holdings, the largest reductions in Q2 2026 came from Millennium Management LLC (-1.66Mn shares), Royal Bank of Canada (-1.52Mn shares), MetLife Investment Management, LLC (-1.26Mn shares), Two Sigma Investments, LP (-1.22Mn shares) and Jane Street Group, LLC (-852.16K shares).
• Per Business Quant, the top 10 investors in ATEC for the quarter ended June 30, 2026 were BlackRock, Inc. (11.33Mn shares), Braidwell LP (6.53Mn shares), American Century Companies Inc (6.52Mn shares), Vanguard Capital Management LLC (5.12Mn shares), BNP Paribas Asset Management Holding S.A. (3.54Mn shares), State Street Corp (3.48Mn shares), Jacobs Levy Equity Management, Inc (3.35Mn shares), Geode Capital Management, LLC (3.19Mn shares), Royal Bank of Canada (3Mn shares) and Nuveen, LLC (2.6Mn shares).