Onto Innovation Inc. (ONTO) ownership: Top institutional holder: BlackRock, Inc. ($1.13B). Insider activity: Net Seller (7 buys, 13 sells). 4 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 5534265.00 | $1.13B | 2026-03-31 |
| VANGUARD GROUP INC | 5576305.00 | $880.28M | 2025-12-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2743019.00 | $562.51M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2222852.00 | $455.84M | 2026-03-31 |
| STATE STREET CORP | 1499684.00 | $307.63M | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 1211014.00 | $248.39M | 2026-03-31 |
| Point72 Asset Management, L.P. | 1203658.00 | $246.83M | 2026-03-31 |
| PARADIGM CAPITAL MANAGEMENT INC/NY | 1102438.00 | $226.08M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Buy | null | 2026-05-15 | |
| Buy | null | 2026-05-15 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.