Institutional shares held 49 Million
636K calls
321K puts
Total value of holdings $6.81B
$88.4M calls
$44.6M puts
Market Cap $7.01B
49,680,800 Shares Out.
Institutional ownership 98.58%
# of Institutions 522


Latest Institutional Activity in ONTO

Top Purchases

Q3 2025
Voya Investment Management LLC Shares Held: 869K ($123M)
Q3 2025
Tt International Asset Management LTD Shares Held: 301K ($42.4M)
Q3 2025
Vanguard Group Inc Shares Held: 5.67M ($800M)
Q3 2025
Assenagon Asset Management S.A. Shares Held: 428K ($60.4M)
Q3 2025
Sg Capital Management LLC Shares Held: 271K ($38.2M)

Top Sells

Q3 2025
Jpmorgan Chase & CO Shares Held: 341K ($48.1M)
Q3 2025
Massachusetts Financial Services CO Shares Held: 102K ($14.4M)
Q3 2025
Federated Hermes, Inc. Shares Held: 87.7K ($12.4M)
Q3 2025
Citigroup Inc Shares Held: 22.2K ($3.13M)
Q3 2025
Mirae Asset Global Investments Co., Ltd. Shares Held: 909 ($128K)

About ONTO

Onto Innovation Inc. engages in the design, development, manufacture, and support of process control tools that performs macro defect inspection and 2D/3D optical metrology, lithography systems, and process control analytical software worldwide. It offers process and yield management solutions, and device packaging and test facilities through standalone systems for macro-defect inspection, packaging lithography, probe card test and analysis, and transparent and opaque thin film measurements; and process control software portfolio that includes solutions for standalone tools, groups of tools, and enterprise-or factory-wide suites. The company also provides spare parts and software licensing services. Its products are used by semiconductor and advanced packaging device manufacturers; silicon wafer; light emitting diode; vertical-cavity surface-emitting laser; micro-electromechanical system; CMOS image sensor; power device; RF filter; data storage; and various industrial and scientific applications. The company was formerly known as Rudolph Technologies, Inc. Onto Innovation Inc. was founded in 1940 and is headquartered in Wilmington, Massachusetts.


Insider Transactions at ONTO

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
168K Shares
From 18 Insiders
Grant, award, or other acquisition 109K shares
Exercise of conversion of derivative security 58.3K shares
Sell / Disposition
131K Shares
From 8 Insiders
Payment of exercise price or tax liability 43.6K shares
Open market or private sale 87.2K shares

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