Onto Innovation Inc. (ONTO) Shareholders & Insider Trades
Onto Innovation shareholders at a glance
The largest holder of Onto Innovation stock is BlackRock Advisors LLC, with 5.1 million shares (10.18% of the company), worth about $1.35 billion as of September 25, 2026. The 10 largest holders together own 36.6%.
In Q2 2026, 721 institutional holdings reports listed shares worth $18.50 billion.
Insiders reported 39 transactions in the last two years: 6 sales worth $18.40 million and no purchases. The newest one on file is from March 2, 2026 (Oh Yoon Ah, General Counsel).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through March 2, 2026.
Onto Innovation Inc.
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Onto Innovation shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Advisors LLC | 5.1 million | 10.18% | $1.4B |
| Vanguard Portfolio Management LLC | 2.7 million | 5.48% | $729.0M |
| Vanguard Capital Management LLC | 2.2 million | 4.52% | $601.0M |
| State Street Corporation | 1.6 million | 3.13% | $415.0M |
| Geode Capital Management LLC | 1.4 million | 2.88% | $383.0M |
| Invesco Advisers, Inc. | 1.4 million | 2.72% | $361.0M |
| Paradigm Capital Management, Inc. | 1.1 million | 2.21% | $294.0M |
| Point72 Asset Management LP | 972,161 | 1.95% | $260.0M |
| Fidelity Management & Research Co. LLC | 882,703 | 1.77% | $236.0M |
| T. Rowe Price International Ltd. | 853,306 | 1.72% | $228.0M |
As of September 25, 2026.
Onto Innovation institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 721 | – | $18.5B |
| Q1 2026 | 600 | 48.1 million | $9.9B |
| Q4 2025 | 512 | 47.9 million | $7.6B |
| Q3 2025 | 514 | 48.0 million | $6.2B |
| Q2 2025 | 483 | 50.5 million | $5.1B |
| Q1 2025 | 503 | 47.2 million | $5.8B |
| Q4 2024 | 543 | 47.1 million | $7.9B |
| Q3 2024 | 548 | 49.2 million | $10.2B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Onto Innovation insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Oh Yoon Ah | Mar 2, 2026 | General Counsel | Stock Award(Grant) at price 0.00 per share. | – |
| Yaldaei Ramil | Mar 2, 2026 | Chief Operating Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Dolev Ido | Mar 2, 2026 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Chen Shirley | Mar 2, 2026 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Roberts Brian K | Mar 2, 2026 | Chief Financial Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Plisinski Michael P | Mar 2, 2026 | Chief Executive Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Plisinski Michael P | Feb 27, 2026 | Chief Executive Officer | -- | – |
| Oh Yoon Ah | Feb 27, 2026 | General Counsel | -- | – |
| Yaldaei Ramil | Feb 27, 2026 | Chief Operating Officer | -- | – |
| Plisinski Michael P | Feb 13, 2026 | Chief Executive Officer | -- | – |
| Oh Yoon Ah | Feb 13, 2026 | General Counsel | -- | – |
| Plisinski Michael P | Dec 24, 2025 | Chief Executive Officer | Stock Gift at price 0.00 per share. | – |
Newest 12 of 39 insider transactions in the last two years.
Questions and answers
Who owns the most Onto Innovation stock?
BlackRock Advisors LLC, with 10.18% of the company (as of September 25, 2026). Next: Vanguard Portfolio Management LLC (5.48%) and Vanguard Capital Management LLC (4.52%).
How many institutions own Onto Innovation stock?
721 institutional holdings reports listed Onto Innovation shares in Q2 2026 worth $18.50 billion.
Are Onto Innovation insiders buying or selling the stock?
In the last two years insiders reported 6 sales and no purchases (39 transactions in all); the newest on file is from March 2, 2026.
