ONTO INNOVATION INC ONTO
COM · Common Stock · CUSIP 683344105 · ISIN US6833441057
American semiconductor company
- SectorTechnology
- IndustryMeasuring & Controlling Devices, NEC
- HeadquartersWilmington, MA
- Founded1940
- Websiteontoinnovation.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($30.5m this quarter). Holder counts are more reliable. Shares outstanding: 49.7m as of 2026-05-01, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $204.84. Options: 13 managers hold calls ($62.5m notional), 10 hold puts ($46.3m).
Trends to Q1 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 300 |
| Q4 2022 | 298 |
| Q1 2023 | 298 |
| Q2 2023 | 329 |
| Q3 2023 | 360 |
| Q4 2023 | 391 |
| Q1 2024 | 434 |
| Q2 2024 | 508 |
| Q3 2024 | 522 |
| Q4 2024 | 521 |
| Q1 2025 | 475 |
| Q2 2025 | 450 |
| Q3 2025 | 477 |
| Q4 2025 | 492 |
| Q1 2026 | 579 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2024 | 262 | 213 |
| Q3 2024 | 284 | 255 |
| Q4 2024 | 242 | 277 |
| Q1 2025 | 244 | 273 |
| Q2 2025 | 230 | 263 |
| Q3 2025 | 264 | 214 |
| Q4 2025 | 236 | 244 |
| Q1 2026 | 325 | 221 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $45.8m | $33.2m | 0.72 |
| Q3 2025 | $90.3m | $39.8m | 0.44 |
| Q4 2025 | $29.0m | $13.4m | 0.46 |
| Q1 2026 | $62.5m | $46.3m | 0.74 |
Biggest buyers
| Point72 Asset Management, L.P. | Added | +818.9k |
| JANE STREET GROUP, LLC | Added | +602.7k |
| BlackRock, Inc. | Added | +602.4k |
| Invesco Ltd. | Added | +505.9k |
| FMR LLC | Added | +377.6k |
| Bridgewater Associates, LP | Added | +255.3k |
| TWO SIGMA INVESTMENTS, LP | Added | +226.2k |
| D. E. Shaw & Co., Inc. | Added | +205.4k |
| AMERIPRISE FINANCIAL INC | Added | +197.3k |
| UBS Group AG | Added | +182.7k |
Biggest sellers
| FRANKLIN RESOURCES INC | Reduced | -773.8k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Reduced | -762.4k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -674.7k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -471.1k |
| Thrivent Financial for Lutherans | Reduced | -221.6k |
| Channing Capital Management, LLC | Reduced | -158.8k |
| WESTFIELD CAPITAL MANAGEMENT CO LP | Reduced | -156.1k |
| Junto Capital Management LP | Reduced | -153.0k |
| Benchstone Capital Management LP | Reduced | -132.8k |
| GENEVA CAPITAL MANAGEMENT LLC | Reduced | -125.4k |
Biggest calls
| PEAK6 LLC | New | $16.4m80.2k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $14.5m70.9k shares |
| CITADEL ADVISORS LLC | Added | $9.6m47.0k shares |
| IMC-Chicago, LLC | Added | $7.8m38.0k shares |
| JANE STREET GROUP, LLC | Reduced | $4.8m23.3k shares |
| CITIGROUP INC | New | $4.0m19.4k shares |
| SIMPLEX TRADING, LLC | Reduced | $2.5m12.2k shares |
| HRT FINANCIAL LP | New | $1.5m7.5k shares |
| TUDOR INVESTMENT CORP ET AL | New | $512.7k2.5k shares |
| TWO SIGMA INVESTMENTS, LP | New | $410.1k2.0k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $18.1m88.5k shares |
| CITADEL ADVISORS LLC | Added | $10.0m48.7k shares |
| JANE STREET GROUP, LLC | Added | $7.7m37.5k shares |
| IMC-Chicago, LLC | New | $5.6m27.3k shares |
| Twin Tree Management, LP | Added | $2.5m12.3k shares |
| SIMPLEX TRADING, LLC | Added | $902.3k4.4k shares |
| Walleye Trading LLC | Reduced | $717.7k3.5k shares |
| Dockside LLC | New | $346.6k1.7k shares |
| TWO SIGMA INVESTMENTS, LP | New | $225.6k1.1k shares |
| GROUP ONE TRADING LLC | Reduced | $143.5k700 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution -1.0 pts · filed 2025-10-17 | 10.3% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.5% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.2% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales in Q1 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q2 2024 | 0 | — | 2 | $544.6k | $544.6k |
| Q3 2024 | 0 | — | 1 | $264.2k | $264.2k |
| Q4 2024 | 0 | — | 1 | $176.5k | $176.5k |
| Q1 2025 | 0 | — | 2 | $18.2m | $18.2m |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
None reported in Q1 2026.
Holders, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.02% of their portfolio | 5.5m $1.1bn | Added +602.4k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.03% of their portfolio | 2.7m $562.5m | First filing |
| VANGUARD CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 2.2m $455.8m | First filing |
| STATE STREET CORP 0.01% of their portfolio | 1.5m $307.6m | Added +40.4k |
| GEODE CAPITAL MANAGEMENT, LLC 0.02% of their portfolio | 1.2m $248.4m | Added +83.5k |
| Point72 Asset Management, L.P. 0.43% of their portfolio | 1.2m $246.8m | Added +818.9k |
| PARADIGM CAPITAL MANAGEMENT INC/NY 8.65% of their portfolio | 1.1m $226.1m | Reduced -23.4k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.65% of their portfolio | 964.2k $197.7m | Reduced -762.4k |
| VOYA INVESTMENT MANAGEMENT LLC 0.20% of their portfolio | 917.2k $187.8m | Reduced -54.1k |
| FMR LLC 0.01% of their portfolio | 829.0k $170.0m | Added +377.6k |
| Thrivent Financial for Lutherans 0.29% of their portfolio | 739.3k $151.6m | Reduced -221.6k |
| D. E. Shaw & Co., Inc. 0.12% of their portfolio | 722.6k $148.2m | Added +205.4k |
| GENEVA CAPITAL MANAGEMENT LLC 3.08% of their portfolio | 705.9k $144.8m | Reduced -125.4k |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 677.5k $138.9m | Added +28.1k |
| Fisher Asset Management, LLC 0.05% of their portfolio | 650.0k $133.3m | Reduced -52.0k |
| Invesco Ltd. 0.01% of their portfolio | 632.8k $129.8m | Added +505.9k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 605.8k $124.2m | Reduced -74.5k |
| JANE STREET GROUP, LLC 0.13% of their portfolio | 604.7k $124.0m | Added +602.7k |
| AQR CAPITAL MANAGEMENT LLC 0.06% of their portfolio | 590.8k $121.2m | Reduced -24.8k |
| FRANKLIN RESOURCES INC 0.03% of their portfolio | 579.2k $118.8m | Reduced -773.8k |
| Bank of New York Mellon Corp 0.02% of their portfolio | 567.8k $116.4m | Reduced -33.0k |
| JENNISON ASSOCIATES LLC 0.08% of their portfolio | 564.3k $115.7m | Reduced -116.5k |
| WELLINGTON MANAGEMENT GROUP LLP 0.02% of their portfolio | 543.9k $111.5m | Reduced -674.7k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 529.6k $108.6m | Added +25.3k |
| MARSHALL WACE, LLP 0.11% of their portfolio | 483.1k $99.1m | Added +53.4k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 482.3k $98.9m | Added +26.8k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 456.0k $93.5m | Added +10.8k |
| UBS Group AG 0.02% of their portfolio | 439.4k $90.1m | Added +182.7k |
| MORGAN STANLEY 0.01% of their portfolio | 436.0k $89.4m | Reduced -31.2k |
| T. Rowe Price Investment Management, Inc. 0.06% of their portfolio | 414.8k $85.1m | Added +52.5k |
| Pacer Advisors, Inc. 0.21% of their portfolio | 364.2k $74.7m | Added +29.2k |
| Channing Capital Management, LLC 1.89% of their portfolio | 360.1k $73.8m | Reduced -158.8k |
| Allspring Global Investments Holdings, LLC 0.13% of their portfolio | 360.0k $76.2m | Added +88.4k |
| Bridgewater Associates, LP 0.32% of their portfolio | 348.4k $71.4m | Added +255.3k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.28% of their portfolio | 327.0k $67.0m | Reduced -156.1k |
| Driehaus Capital Management LLC 0.48% of their portfolio | 320.5k $65.7m | Reduced -28.5k |
| ROYCE & ASSOCIATES LP 0.64% of their portfolio | 317.1k $65.0m | Reduced -48.6k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 316.2k $59.8m | Reduced -65.4k |
| TWO SIGMA INVESTMENTS, LP 0.05% of their portfolio | 312.7k $64.1m | Added +226.2k |
| VANGUARD FIDUCIARY TRUST CO 0.02% of their portfolio | 310.2k $63.6m | First filing |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 309.4k $63.4m | Added +197.3k |
| GLENVIEW CAPITAL MANAGEMENT, LLC 1.66% of their portfolio | 299.7k $61.5m | Reduced -115.1k |
| CITADEL ADVISORS LLC 0.04% of their portfolio | 296.6k $60.8m | Added +157.8k |
| BNP PARIBAS FINANCIAL MARKETS 0.04% of their portfolio | 282.4k $57.9m | Added +57.8k |
| SEGALL BRYANT & HAMILL, LLC 0.81% of their portfolio | 275.7k $56.5m | Reduced -123.5k |
| TimesSquare Capital Management, LLC 0.93% of their portfolio | 267.9k $54.9m | Added +34.8k |
| Penserra Capital Management LLC 0.61% of their portfolio | 254.6k $52.2m | Added +17.4k |
| RAYMOND JAMES FINANCIAL INC 0.02% of their portfolio | 252.9k $49.9m | Reduced -29.7k |
| Defiance ETFs, LLC 0.74% of their portfolio | 249.9k $51.2m | Added +12.6k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.07% of their portfolio | 239.4k $49.1m | Added +19.9k |
| SG Capital Management LLC 3.87% of their portfolio | 229.5k $47.1m | Added +113.3k |
| Assenagon Asset Management S.A. 0.07% of their portfolio | 228.3k $46.8m | Added +23.2k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 214.6k $44.0m | Reduced -34.8k |
| Junto Capital Management LP 0.93% of their portfolio | 213.2k $43.7m | Reduced -153.0k |
| Balyasny Asset Management L.P. 0.08% of their portfolio | 205.7k $42.2m | Reduced -13.0k |
| Granahan Investment Management, LLC 1.97% of their portfolio | 198.7k $40.7m | Added +2.1k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.03% of their portfolio | 198.1k $40.6m | Reduced -71.1k |
| BRILLIANCE ASSET MANAGEMENT LTD 11.72% of their portfolio | 193.8k $39.8m | Reduced -55.6k |
| Divisar Capital Management LLC 10.10% of their portfolio | 193.3k $39.6m | Reduced -19.1k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 192.8k $39.5m | Reduced -40.0k |
| Clearbridge Investments, LLC 0.03% of their portfolio | 190.8k $39.1m | Reduced -26.5k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.16% of their portfolio | 189.6k $38.9m | Added +169.4k |
| Artisan Partners Limited Partnership 0.06% of their portfolio | 182.0k $37.3m | New |
| Boston Partners 0.04% of their portfolio | 181.6k $37.2m | Reduced -72.8k |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 0.84% of their portfolio | 178.3k $36.6m | Reduced -18.5k |
| Gotham Asset Management, LLC 0.11% of their portfolio | 168.4k $34.5m | Reduced -32.1k |
| Talos Eurisko Asset Management LP 5.79% of their portfolio | 165.4k $33.9m | New |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ 0.19% of their portfolio | 163.5k $33.5m | Reduced -590 |
| FIRST TRUST ADVISORS LP 0.02% of their portfolio | 162.0k $33.2m | Reduced -13.0k |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 160.4k $32.9m | Reduced -87.7k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.69% of their portfolio | 159.2k $32.6m | Reduced -24.8k |
| PALISADE CAPITAL MANAGEMENT, LP 1.08% of their portfolio | 157.8k $32.4m | Reduced -3.7k |
| SIRIOS CAPITAL MANAGEMENT L P 3.83% of their portfolio | 153.9k $31.6m | Added +38.6k |
| VALUE HOLDINGS MANAGEMENT CO. LLC 4.97% of their portfolio | 149.4k $30.6m | Reduced -3.0k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 148.0k $30.3m | Added +2.1k |
| Nuveen, LLC 0.01% of their portfolio | 147.3k $30.2m | Added +36.8k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 146.3k $30.0m | Added +95.9k |
| PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio | 144.6k $29.6m | Reduced -42.3k |
| BESSEMER GROUP INC 0.05% of their portfolio | 142.8k $29.3m | Reduced -32.9k |
| Grantham, Mayo, Van Otterloo & Co. LLC 0.07% of their portfolio | 136.5k $28.0m | New |
| Stephens Investment Management Group LLC 0.38% of their portfolio | 135.4k $27.8m | New |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 134.1k $27.5m | Added +3.9k |
| Alua Capital Management LP 2.95% of their portfolio | 131.7k $27.0m | New |
| Amundi 0.01% of their portfolio | 130.7k $26.8m | Reduced -9.3k |
| EMERALD ADVISERS, LLC 0.77% of their portfolio | 118.4k $24.3m | Reduced -4.2k |
| ACADIAN ASSET MANAGEMENT LLC 0.03% of their portfolio | 117.8k $24.1m | Added +103.1k |
| Robeco Schweiz AG 0.50% of their portfolio | 114.7k $23.5m | Reduced -25.3k |
| GUARDIAN POINT CAPITAL, LP 9.29% of their portfolio | 110.0k $22.6m | Reduced -50.0k |
| Alta Park Capital, LP 3.35% of their portfolio | 101.7k $20.9m | Reduced -20.9k |
| Swiss National Bank 0.01% of their portfolio | 96.9k $19.9m | Added +300 |
| Freestone Grove Partners LP 0.14% of their portfolio | 96.5k $19.8m | New |
| DF DENT & CO INC 0.37% of their portfolio | 93.6k $19.2m | Reduced -28.0k |
| South Street Advisors LLC 2.71% of their portfolio | 91.3k $18.7m | Added +6.0k |
| VICTORY CAPITAL MANAGEMENT INC 0.01% of their portfolio | 86.4k $17.7m | Reduced -3.3k |
| Russell Investments Group, Ltd. 0.02% of their portfolio | 84.8k $17.4m | Added +25.6k |
| California Public Employees Retirement System 0.01% of their portfolio | 84.1k $17.2m | Reduced -227 |
| LOOMIS SAYLES & CO L P 0.02% of their portfolio | 81.1k $16.6m | New |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 0.19% of their portfolio | 81.1k $16.6m | Added +24.1k |
| TUDOR INVESTMENT CORP ET AL 0.09% of their portfolio | 80.3k $16.5m | Added +34.4k |
| GENERAL AMERICAN INVESTORS CO INC 1.08% of their portfolio | 80.0k $16.4m | Unchanged |