595 tracked 13F filers disclose a position in ONTO as of the latest SEC 13F filings, a combined $10.9B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $1.1B | 5.5M | ▲+12% Added · +602K sh | Q1 2026 | |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | $562.5M | 2.7M | →First observed position No prior filed position | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $455.8M | 2.2M | →First observed position No prior filed position | Q1 2026 | |
| 4 | STATE STREET CORP | $588.1M | 1.6M | ▲+3.7% Added · +55K sh | Q2 2026 | |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | $542.7M | 1.4M | ▲+18% Added · +223K sh | Q2 2026 | |
| 6 | Point72 Asset Management, L.P. | $246.8M | 1.2M | ▲+213% Added · +819K sh | Q1 2026 | |
| 7 | PARADIGM CAPITAL MANAGEMENT INC/NY | $416.8M | 1.1M | ▼−0.1% Reduced · −1K sh | Q2 2026 | |
| 8 | VOYA INVESTMENT MANAGEMENT LLC | $187.8M | 917K | ▼−5.6% Reduced · −54K sh | Q1 2026 | |
| 9 | FMR LLC | $170.0M | 829K | ▲+84% Added · +378K sh | Q1 2026 | |
| 10 | D. E. Shaw & Co., Inc. | $148.2M | 723K | ▲+40% Added · +205K sh | Q1 2026 | |
| 11 | DIMENSIONAL FUND ADVISORS LP | $138.9M | 678K | ▲+4.3% Added · +28K sh | Q1 2026 | |
| 12 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $251.8M | 665K | ▼−31% Reduced · −299K sh | Q2 2026 | |
| 13 | NORGES BANK | $104.9M | 665K | ▼−6.8% Reduced · −48K sh | Q4 2025 | |
| 14 | Fisher Asset Management, LLC | $133.3M | 650K | ▼−7.4% Reduced · −52K sh | Q1 2026 | |
| 15 | PRICE T ROWE ASSOCIATES INC /MD/ | $124.2M | 606K | ▼−11% Reduced · −74K sh | Q1 2026 | |
| 16 | JANE STREET GROUP, LLC | $124.0M | 605K | ▲300× Added · +603K sh | Q1 2026 | |
| 17 | AQR CAPITAL MANAGEMENT LLC | $121.2M | 591K | ▼−4.0% Reduced · −25K sh | Q1 2026 | |
| 18 | FRANKLIN RESOURCES INC | $118.8M | 579K | ▼−57% Reduced · −774K sh | Q1 2026 | |
| 19 | Bank of New York Mellon Corp | $116.4M | 568K | ▼−5.5% Reduced · −33K sh | Q1 2026 | |
| 20 | JENNISON ASSOCIATES LLC | $115.7M | 564K | ▼−17% Reduced · −117K sh | Q1 2026 | |
| 21 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $108.6M | 530K | ▲+5.0% Added · +25K sh | Q1 2026 | |
| 22 | GENEVA CAPITAL MANAGEMENT LLC | $184.2M | 487K | ▼−31% Reduced · −219K sh | Q2 2026 | |
| 23 | MARSHALL WACE, LLP | $99.1M | 483K | ▲+12% Added · +53K sh | Q1 2026 | |
| 24 | GOLDMAN SACHS GROUP INC | $98.9M | 482K | ▲+5.9% Added · +27K sh | Q1 2026 | |
| 25 | NORTHERN TRUST CORP | $93.5M | 456K | ▲+2.4% Added · +11K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 9 funds opened a new position in ONTO and 23 added to an existing one, while 33 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 353 funds | $220.9B |
| NVIDIA CORPNVDA | 352 funds | $429.6B |
| MICROSOFT CORPMSFT | 349 funds | $283.8B |
| META PLATFORMS INC-CLASS AMETA | 345 funds | $129.6B |
| BROADCOM INCAVGO | 344 funds | $169.2B |
| ALPHABET INC-CL AGOOGL | 338 funds | $186.1B |
| APPLE INCAAPL | 335 funds | $320.7B |
| ELI LILLY & COLLY | 332 funds | $88.0B |
| ALPHABET INC-CL CGOOG | 331 funds | $134.6B |
| MICRON TECHNOLOGY INCMU | 330 funds | $47.6B |
| VISA INC-CLASS A SHARESV | 328 funds | $70.7B |
| JPMORGAN CHASE & COJPM | 323 funds | $68.6B |
Ranked by how many of ONTO's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 21, 2026 | Lynch Susan D | Director | Sell (S) | 1K | $302K |
| Feb 13, 2025 | Vedula Srinivas | SVP, Customer Success | Sell (S) | 238 | $40K |
| Jan 21, 2025 | Plisinski Michael P | CEO, Director | Sell (S) | 35K | $7.7M |
| Jan 16, 2025 | Plisinski Michael P | CEO, Director | Sell (S) | 30K | $6.3M |
| Jan 16, 2025 | Plisinski Michael P | CEO, Director | Sell (S) | 100 | $21K |
| Jan 15, 2025 | Vedula Srinivas | SVP, Customer Success | Sell (S) | 827 | $170K |
| Jan 14, 2025 | Plisinski Michael P | CEO, Director | Sell (S) | 2K | $349K |
| Jan 14, 2025 | Plisinski Michael P | CEO, Director | Sell (S) | 18K | $3.7M |
| Nov 15, 2024 | Slicer Mark | Chief Financial Officer | Sell (S) | 1K | $176K |
| Sep 3, 2024 | Vedula Srinivas | SVP, Customer Success | Sell (S) | 1K | $264K |
| Jun 10, 2024 | Vedula Srinivas | SVP, Customer Success | Sell (S) | 1K | $317K |
| Jun 7, 2024 | Slicer Mark | Chief Financial Officer | Sell (S) | 519 | $113K |
| Class | 13F holders | Value held |
|---|---|---|
| ONTOthis pagecs | 595 funds | $10.9B |
| 683344AA3CONVERTIBLE BOND | 1 funds | $6.6M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for ONTO
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/ONTO/capital-change-brief"
Use Arkolith's capital_change_brief for ONTO. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for ONTO. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.