Onto Innovation Inc. (ONTO) Institutional Ownership

Ownership Summary

Onto Innovation Inc. (NYSE:ONTO) showed up in the 13F filings of 479 institutional investors as of December 2025.

• These investors held 97.0% of outstanding shares in December 2025, down from 97.6% in September 2025.
• They increased total shares held in ONTO by 6.04% quarter over quarter, and investors in Onto Innovation decreased 6.63% from a year ago.
• Of these 479 holders, 252 added to their stakes in Onto Innovation, 166 trimmed positions, and 61 made no changes.
• In total, institutional investors held 47.63Mn shares in Onto Innovation as of December 2025, up by 2.71Mn shares quarter on quarter, and down 1.66Mn shares year over year.
• As of December 31, 2025, the biggest holder of Onto Innovation is BlackRock, Inc. at 5.53Mn shares, representing 11.27% of shares outstanding.
• Top purchasers of ONTO stock for the quarter ending December 2025 included 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).
• The biggest sellers of Onto Innovation for the quarter ending December 2025 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).
• Per Business Quant data, the top 10 holders of Onto Innovation for the quarter ending December 2025 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).