Formfactor Inc (FORM) Institutional Ownership

Ownership Summary

Formfactor Inc (NASDAQ:FORM) showed up in the 13F filings of 387 institutional investors as of March 2026.

• Collectively, these holders controlled 96.1% of Formfactor's outstanding shares in March 2026, down from 99.2% in December 2025.
• They increased total shares held in Formfactor by 16.17% from the prior quarter, while the number of investors in FORM increased 38.21% year over year.
• During the quarter, 237 of these 387 funds increased positions in FORM, 114 reduced exposure, and 36 held steady.
• Institutional investors collectively held 74.8Mn shares in Formfactor as of March 2026, up by 10.41Mn shares quarter on quarter, and down 6.17Mn shares year over year.
• As of March 31, 2026, BlackRock, Inc. held the largest stake in Formfactor with 12.25Mn shares, accounting for 15.74% of total shares outstanding.
• Leading buyers of Formfactor shares for the quarter ending March 2026 were VANGUARD PORTFOLIO MANAGEMENT LLC (5.88Mn), VANGUARD CAPITAL MANAGEMENT LLC (3.47Mn), Polar Capital Holdings Plc (2.29Mn), Invesco Ltd. (905.44K), PRICE T ROWE ASSOCIATES INC /MD/ (840.63K).
• The biggest sellers of Formfactor for the quarter ending March 2026 included FULLER & THALER ASSET MANAGEMENT, INC. (1.03Mn), Channing Capital Management, LLC (993.15K), REINHART PARTNERS, LLC. (992.65K), Morgan Stanley (962.64K), EARNEST PARTNERS LLC (899.83K).
• Business Quant data shows the 10 biggest positions in Formfactor as of March 2026 are held by BlackRock, Inc. (12.25Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (5.88Mn), EARNEST PARTNERS LLC (4.88Mn), VANGUARD CAPITAL MANAGEMENT LLC (3.47Mn), State Street Corp (2.93Mn), Bank Of America Corp /De/ (2.48Mn), Polar Capital Holdings Plc (2.29Mn), ALLIANCEBERNSTEIN L.P. (2.23Mn), GEODE CAPITAL MANAGEMENT, LLC (2.19Mn), PRIMECAP MANAGEMENT CO/CA/ (1.79Mn).