Atkore ATKR Institutional Ownership

Updated Oct 16, 2026

Atkore Inc. (NYSE:ATKR) was reported as a holding by 326 institutional investors in 13F filings for the quarter ended June 30, 2026.

• Collectively, these holders controlled 97.21% of Atkore's outstanding shares in Q2 2026, up from 95.82% in Q1 2026.
• Total holdings of ATKR shares rose 1.47% from Q1 2026, and the holder count rose 11.26% from Q2 2025.
• Of these 326 holders, 188 added to their positions, 86 reduced their stakes and 52 left their positions unchanged.
• In total, institutional investors held 32.83Mn shares of Atkore at the end of Q2 2026, up 474.21K from the prior quarter and up 191.79K from a year earlier.
• BlackRock, Inc. led 13F holders of ATKR with 3.12Mn shares as of June 30, 2026, or 9.23% of shares outstanding.
• Holders that added the most shares of Atkore in Q2 2026 were Irenic Capital Management LP (+493.64K shares), BlackRock, Inc. (+489.43K shares), American Century Companies Inc (+336.04K shares), JPMorgan Chase & Co (+270.56K shares) and Jacobs Levy Equity Management, Inc (+175.99K shares).
• Holders that trimmed the most shares of Atkore in Q2 2026 while keeping a position were Gates Capital Management, Inc. (-975.53K shares), First Trust Advisors LP (-693.78K shares), Arrowstreet Capital, Limited Partnership (-215.9K shares), Canyon Capital Advisors LLC (-165.3K shares) and Canada Pension Plan Investment Board (-144.26K shares).
• Atkore's 10 largest institutional shareholders as of Q2 2026 were BlackRock, Inc. (3.12Mn shares), Vanguard Portfolio Management LLC (2.12Mn shares), American Century Companies Inc (1.78Mn shares), Gates Capital Management, Inc. (1.71Mn shares), Vanguard Capital Management LLC (1.52Mn shares), Dimensional Fund Advisors LP (1.3Mn shares), LSV Asset Management (1.09Mn shares), State Street Corp (906.42K shares), Geode Capital Management, LLC (902.49K shares) and Earnest Partners LLC (772.29K shares), per Business Quant data.