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 ($22.2m this quarter). Holder counts are more reliable. Shares outstanding: 49.7m as of 2026-02-05, 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 ≈ $157.98. Options: 9 managers hold calls ($29.0m notional), 9 hold puts ($13.4m).
Trends to Q4 2025
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 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2024 | 201 | 216 |
| 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 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2025 | $52.3m | $42.9m | 0.82 |
| Q2 2025 | $45.8m | $33.2m | 0.72 |
| Q3 2025 | $90.3m | $39.8m | 0.44 |
| Q4 2025 | $29.0m | $13.4m | 0.46 |
Biggest buyers
| JENNISON ASSOCIATES LLC | Added | +632.0k |
| AQR CAPITAL MANAGEMENT LLC | Added | +467.6k |
| Thrivent Financial for Lutherans | Added | +451.1k |
| Channing Capital Management, LLC | Added | +388.9k |
| T. Rowe Price Investment Management, Inc. | New | +362.3k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +352.3k |
| Pacer Advisors, Inc. | Added | +325.2k |
| GOLDMAN SACHS GROUP INC | Added | +305.4k |
| Boston Partners | New | +254.3k |
| Driehaus Capital Management LLC | Added | +248.5k |
Biggest sellers
| D. E. Shaw & Co., Inc. | Reduced | -485.6k |
| FMR LLC | Reduced | -378.9k |
| UBS Group AG | Reduced | -376.2k |
| MORGAN STANLEY | Reduced | -323.3k |
| ROYAL BANK OF CANADA | Reduced | -317.7k |
| TWO SIGMA INVESTMENTS, LP | Reduced | -312.8k |
| JPMORGAN CHASE & CO | Reduced | -300.6k |
| TT International Asset Management LTD | Reduced | -297.0k |
| BlackRock, Inc. | Reduced | -281.5k |
| TWO SIGMA ADVISERS, LP | Sold out | -275.5k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $11.0m69.5k shares |
| JANE STREET GROUP, LLC | Reduced | $5.6m35.2k shares |
| CITADEL ADVISORS LLC | Reduced | $3.7m23.6k shares |
| ARDSLEY ADVISORY PARTNERS LP | New | $2.4m15.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $2.3m14.6k shares |
| GROUP ONE TRADING LLC | Added | $1.8m11.7k shares |
| IMC-Chicago, LLC | Reduced | $1.8m11.7k shares |
| Walleye Trading LLC | Reduced | $268.4k1.7k shares |
| Walleye Capital LLC | New | $142.1k900 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $5.3m33.4k shares |
| CITADEL ADVISORS LLC | Reduced | $4.1m25.7k shares |
| JANE STREET GROUP, LLC | Reduced | $1.2m7.6k shares |
| Twin Tree Management, LP | New | $978.7k6.2k shares |
| Walleye Trading LLC | Reduced | $805.1k5.1k shares |
| Squarepoint Ops LLC | Added | $663.0k4.2k shares |
| GROUP ONE TRADING LLC | Added | $315.7k2.0k shares |
| Walleye Capital LLC | New | $94.7k600 shares |
| SIMPLEX TRADING, LLC | Reduced | $47.4k300 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 Q4 2025
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 |
|---|---|---|---|---|---|
| Q1 2024 | 0 | — | 3 | $8.3m | $7.8m |
| 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 | — | — |
None reported in Q4 2025.
Holders, Q4 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.01% of their portfolio | 5.6m $880.3m | Reduced -91.1k |
| BlackRock, Inc. 0.01% of their portfolio | 4.9m $778.5m | Reduced -281.5k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.76% of their portfolio | 1.7m $272.6m | Reduced -255.2k |
| STATE STREET CORP 0.01% of their portfolio | 1.5m $230.4m | Reduced -15.9k |
| FRANKLIN RESOURCES INC 0.05% of their portfolio | 1.4m $213.6m | Added +238.5k |
| WELLINGTON MANAGEMENT GROUP LLP 0.03% of their portfolio | 1.2m $192.4m | Reduced -180.4k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 1.1m $178.0m | Added +352.3k |
| PARADIGM CAPITAL MANAGEMENT INC/NY 7.48% of their portfolio | 1.1m $177.7m | Added +13.0k |
| VOYA INVESTMENT MANAGEMENT LLC 0.15% of their portfolio | 971.2k $153.0m | Added +102.6k |
| Thrivent Financial for Lutherans 0.27% of their portfolio | 960.9k $151.7m | Added +451.1k |
| GENEVA CAPITAL MANAGEMENT LLC 2.47% of their portfolio | 831.3k $131.2m | Reduced -253.1k |
| Fisher Asset Management, LLC 0.04% of their portfolio | 702.0k $110.8m | Added +46.0k |
| JENNISON ASSOCIATES LLC 0.06% of their portfolio | 680.8k $107.5m | Added +632.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 680.3k $107.4m | Reduced -95.8k |
| NORGES BANK 0.01% of their portfolio | 664.8k $104.9m | Not comparable |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 649.4k $102.5m | Reduced -49.2k |
| AQR CAPITAL MANAGEMENT LLC 0.05% of their portfolio | 615.7k $97.2m | Added +467.6k |
| Bank of New York Mellon Corp 0.02% of their portfolio | 600.8k $94.8m | Added +113.6k |
| Channing Capital Management, LLC 2.11% of their portfolio | 518.9k $81.9m | Added +388.9k |
| D. E. Shaw & Co., Inc. 0.06% of their portfolio | 517.2k $81.6m | Reduced -485.6k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 504.3k $79.6m | Added +1.9k |
| MILLENNIUM MANAGEMENT LLC 0.06% of their portfolio | 495.0k $78.1m | Reduced -104.7k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.32% of their portfolio | 483.1k $76.3m | Added +8.6k |
| MORGAN STANLEY 0.00% of their portfolio | 467.2k $73.8m | Reduced -323.3k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 455.5k $71.9m | Added +305.4k |
| FMR LLC 0.00% of their portfolio | 451.4k $71.3m | Reduced -378.9k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 445.2k $70.3m | Reduced -17.3k |
| MARSHALL WACE, LLP 0.07% of their portfolio | 429.7k $67.8m | Added +244.9k |
| GLENVIEW CAPITAL MANAGEMENT, LLC 1.39% of their portfolio | 414.8k $65.5m | Added +144.2k |
| SEGALL BRYANT & HAMILL, LLC 0.85% of their portfolio | 399.2k $63.0m | Added +94.0k |
| Point72 Asset Management, L.P. 0.10% of their portfolio | 384.8k $60.7m | Added +99.6k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 381.6k $60.2m | Reduced -300.6k |
| Junto Capital Management LP 1.29% of their portfolio | 366.2k $57.8m | Added +57.8k |
| ROYCE & ASSOCIATES LP 0.59% of their portfolio | 365.7k $57.7m | Added +58.3k |
| T. Rowe Price Investment Management, Inc. 0.02% of their portfolio | 362.3k $57.2m | New |
| Driehaus Capital Management LLC 0.37% of their portfolio | 349.0k $55.1m | Added +248.5k |
| Pacer Advisors, Inc. 0.14% of their portfolio | 335.0k $52.9m | Added +325.2k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 282.6k $45.0m | Reduced -33.5k |
| Allspring Global Investments Holdings, LLC 0.07% of their portfolio | 271.6k $45.1m | Added +162.4k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.03% of their portfolio | 269.2k $42.5m | Reduced -86.6k |
| UBS Group AG 0.01% of their portfolio | 256.7k $40.5m | Reduced -376.2k |
| Boston Partners 0.04% of their portfolio | 254.3k $40.2m | New |
| BRILLIANCE ASSET MANAGEMENT LTD 15.46% of their portfolio | 249.4k $39.4m | Added +30.8k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 249.4k $39.4m | Reduced -317.7k |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 248.1k $39.2m | Added +79.5k |
| Penserra Capital Management LLC 0.44% of their portfolio | 237.2k $37.4m | Reduced -40.2k |
| Defiance ETFs, LLC 1.24% of their portfolio | 237.2k $38.0m | First filing |
| TimesSquare Capital Management, LLC 0.55% of their portfolio | 233.1k $36.8m | Added +18.8k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 232.9k $36.8m | Added +96.9k |
| BNP PARIBAS FINANCIAL MARKETS 0.02% of their portfolio | 224.5k $35.4m | Added +9.9k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.05% of their portfolio | 219.5k $34.7m | Added +102.3k |
| Balyasny Asset Management L.P. 0.06% of their portfolio | 218.6k $34.5m | New |
| Clearbridge Investments, LLC 0.03% of their portfolio | 217.3k $34.3m | Added +310 |
| Divisar Capital Management LLC 9.42% of their portfolio | 212.4k $33.5m | Added +37.3k |
| Assenagon Asset Management S.A. 0.05% of their portfolio | 205.1k $32.4m | Reduced -222.8k |
| Gotham Asset Management, LLC 0.12% of their portfolio | 200.5k $31.6m | Reduced -910 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 0.73% of their portfolio | 196.8k $31.1m | Reduced -211 |
| Granahan Investment Management, LLC 1.33% of their portfolio | 196.6k $31.0m | Added +122.5k |
| PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio | 186.8k $29.5m | Added +41.3k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.62% of their portfolio | 184.0k $29.0m | Added +129.5k |
| BESSEMER GROUP INC 0.04% of their portfolio | 175.8k $27.7m | Reduced -13.9k |
| FIRST TRUST ADVISORS LP 0.02% of their portfolio | 174.9k $27.6m | Reduced -31.8k |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ 0.14% of their portfolio | 164.1k $25.9m | Reduced -31.1k |
| PALISADE CAPITAL MANAGEMENT, LP 0.76% of their portfolio | 161.5k $25.5m | Added +44.0k |
| CREDIT AGRICOLE S A 0.07% of their portfolio | 160.1k $25.3m | Added +27.8k |
| GUARDIAN POINT CAPITAL, LP 7.82% of their portfolio | 160.0k $25.3m | New |
| VALUE HOLDINGS MANAGEMENT CO. LLC 4.02% of their portfolio | 152.4k $24.1m | Unchanged |
| Benchstone Capital Management LP 2.65% of their portfolio | 149.0k $23.5m | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 145.9k $23.0m | Added +1.1k |
| Robeco Schweiz AG 0.50% of their portfolio | 140.0k $22.1m | Reduced -11.9k |
| Amundi 0.01% of their portfolio | 139.9k $22.1m | Added +29.9k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 138.8k $21.9m | Reduced -252.5k |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 130.1k $20.5m | Reduced -3.4k |
| Invesco Ltd. 0.00% of their portfolio | 126.9k $20.0m | Added +19.3k |
| Jain Global LLC 0.20% of their portfolio | 126.8k $20.0m | Reduced -25.8k |
| Alta Park Capital, LP 2.33% of their portfolio | 122.6k $19.4m | Reduced -3.5k |
| EMERALD ADVISERS, LLC 0.60% of their portfolio | 122.6k $19.4m | Reduced -4.9k |
| DF DENT & CO INC 0.28% of their portfolio | 121.5k $19.2m | Added +41.1k |
| SG Capital Management LLC 2.01% of their portfolio | 116.1k $18.3m | Reduced -154.7k |
| SIRIOS CAPITAL MANAGEMENT L P 2.27% of their portfolio | 115.4k $18.2m | Reduced -47.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 112.1k $17.7m | Added +4.5k |
| Nuveen, LLC 0.00% of their portfolio | 110.5k $17.4m | Reduced -13.6k |
| Rockefeller Capital Management L.P. 0.03% of their portfolio | 108.2k $17.1m | Reduced -34.8k |
| Swiss National Bank 0.01% of their portfolio | 96.6k $15.3m | Added +1.8k |
| SummitTX Capital, L.P. 0.46% of their portfolio | 96.6k $15.3m | New |
| Tidal Investments LLC 0.06% of their portfolio | 96.1k $15.2m | Reduced -29.6k |
| JANUS HENDERSON GROUP PLC 0.01% of their portfolio | 94.9k $15.0m | Added +73.3k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.01% of their portfolio | 94.3k $14.9m | Added +70.3k |
| Bridgewater Associates, LP 0.05% of their portfolio | 93.1k $14.7m | Added +29.1k |
| CAPITAL FUND MANAGEMENT S.A. 0.14% of their portfolio | 92.7k $14.6m | Reduced -45.9k |
| Tredje AP-fonden 0.11% of their portfolio | 90.0k $14.2m | New |
| VICTORY CAPITAL MANAGEMENT INC 0.01% of their portfolio | 89.7k $14.2m | Reduced -24.2k |
| Andar Capital Management HK Ltd 14.74% of their portfolio | 86.6k $13.7m | Reduced -23.4k |
| TWO SIGMA INVESTMENTS, LP 0.02% of their portfolio | 86.5k $13.6m | Reduced -312.8k |
| South Street Advisors LLC 1.89% of their portfolio | 85.4k $13.5m | Reduced -5.7k |
| California Public Employees Retirement System 0.01% of their portfolio | 84.3k $13.3m | Added +2.1k |
| Swedbank AB 0.01% of their portfolio | 82.6k $13.0m | Reduced -29.9k |
| NORDEA INVESTMENT MANAGEMENT AB 0.01% of their portfolio | 82.6k $13.1m | Reduced -11.2k |
| GENERAL AMERICAN INVESTORS CO INC 0.79% of their portfolio | 80.0k $12.6m | New |
| Ardmore Road Asset Management LP 0.93% of their portfolio | 78.1k $12.3m | New |