Onto Innovation ONTO Institutional Ownership

Ownership Summary

Onto Innovation Inc. (NYSE:ONTO) appears in 563 institutional 13F filings for the quarter ending March 2026.

• These investors held 95083.1% of outstanding shares in March 2026, down from 98370.8% in December 2025.
• They increased total shares held in ONTO by 16.25% quarter over quarter, and investors in Onto Innovation increased 17.29% from a year ago.
• During the quarter, 332 of these 563 funds increased positions in ONTO, 172 reduced exposure, and 59 held steady.
• Combined, these investors held 47.54Mn shares in ONTO for March 2026, up by 6.65Mn shares quarter on quarter, and down 3.82Mn shares year over year.
• BlackRock, Inc. is the top holder of Onto Innovation as of March 31, 2026, with 5.53Mn shares representing 11068.53% of outstanding stock.
• The most significant purchases of ONTO for the quarter ending March 2026 came from VANGUARD PORTFOLIO MANAGEMENT LLC (2.74Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.22Mn), Point72 Asset Management, L.P. (818.89K), PRICE T ROWE ASSOCIATES INC /MD/ (605.78K), JANE STREET GROUP, LLC (602.67K).
• Top sellers of ONTO stock for the quarter ending March 2026 included Franklin Resources Inc (773.8K), WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (762.37K), WELLINGTON MANAGEMENT GROUP LLP (674.66K), MILLENNIUM MANAGEMENT LLC (471.14K), Goldman Sachs Group Inc (428.68K).
• According to Business Quant data, leading holders of ONTO for March 2026 are BlackRock, Inc. (5.53Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (2.74Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.22Mn), State Street Corp (1.5Mn), GEODE CAPITAL MANAGEMENT, LLC (1.21Mn), Point72 Asset Management, L.P. (1.2Mn), PARADIGM CAPITAL MANAGEMENT INC/NY (1.1Mn), WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (964.21K), VOYA INVESTMENT MANAGEMENT LLC (917.16K), FMR LLC (828.98K).