VANGUARD GROUP INC
Rank #1
11.2%
- Shares
- 5.58M
- Change
- -91.10K
- Change %
- -1.61%
- Filing
- Dec 31, 2025
Decreased
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
NYSE · TECHNOLOGY · Holders
Onto Innovation Inc (ONTO) Institutional Ownership & Insider Trading History
Top ONTO institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.
Ownership read
ONTO insider sentiment: Net selling.
VANGUARD GROUP INC is the largest loaded institutional holder. 66 sale rows and 0 purchase rows are visible in the loaded Form 4 history. Use the filters below to separate real buying and selling from option exercises, gifts, awards, and tax withholding.
Insider flow
ONTO
Purchases—
Sales239.26K
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
5.58M
VANGUARD GROUP INC
Insider stance
Net selling
$32.71M sold / — bought
Latest filing
May 20, 2026
Most recent holder or insider filing date
Rows loaded
240
120 holder / 120 insider
- Holder rows
- 120
- Market data feed
- Latest filing
- May 20, 2026
- Most recent holder or insider filing date
- Increased / initiated
- 59
- 60 decreased in loaded rows
- Insider rows
- 120
- Market data feed
Top 120 institutional holders
Onto Innovation Inc (ONTO) institutional ownership
Ranked by reported share count, with position changes and latest filing dates where the ownership feed supplies them.
BLACKROCK
Rank #2
11.1%
- Shares
- 5.53M
- Change
- +602.44K
- Change %
- +12.21%
- Filing
- Mar 31, 2026
Increased
VANGUARD PORTFOLIO MANAGEMENT LLC
Rank #3
5.50%
- Shares
- 2.74M
- Change
- +2.74M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
VANGUARD CAPITAL MANAGEMENT LLC
Rank #4
4.46%
- Shares
- 2.22M
- Change
- +2.22M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
STATE STREET CORP
Rank #5
3.01%
- Shares
- 1.50M
- Change
- +40.41K
- Change %
- +2.77%
- Filing
- Mar 31, 2026
Increased
GEODE CAPITAL MANAGEMENT
Rank #6
2.43%
- Shares
- 1.21M
- Change
- +83.48K
- Change %
- +7.40%
- Filing
- Mar 31, 2026
Increased
POINT72 ASSET MANAGEMENT
Rank #7
2.41%
- Shares
- 1.20M
- Change
- +818.89K
- Change %
- +2.13%
- Filing
- Mar 31, 2026
Increased
PARADIGM CAPITAL MANAGEMENT INC
Rank #8
2.21%
- Shares
- 1.10M
- Change
- -23.40K
- Change %
- -2.08%
- Filing
- Mar 31, 2026
Decreased
WILLIAM BLAIR INVESTMENT MANAGEMENT
Rank #9
1.93%
- Shares
- 964.21K
- Change
- -762.37K
- Change %
- -44.16%
- Filing
- Mar 31, 2026
Decreased
VOYA INVESTMENT MANAGEMENT LLC
Rank #10
1.84%
- Shares
- 917.15K
- Change
- -54.09K
- Change %
- -5.57%
- Filing
- Mar 31, 2026
Decreased
FMR LLC
Rank #11
1.66%
- Shares
- 828.98K
- Change
- +377.62K
- Change %
- +83.66%
- Filing
- Mar 31, 2026
Increased
THRIVENT FINANCIAL FOR LUTHERANS
Rank #12
1.48%
- Shares
- 739.29K
- Change
- -221.62K
- Change %
- -23.06%
- Filing
- Mar 31, 2026
Decreased
D. E. SHAW & CO.
Rank #13
1.45%
- Shares
- 722.58K
- Change
- +205.39K
- Change %
- +39.71%
- Filing
- Mar 31, 2026
Increased
GENEVA CAPITAL MANAGEMENT LLC
Rank #14
1.42%
- Shares
- 705.94K
- Change
- -125.40K
- Change %
- -15.08%
- Filing
- Mar 31, 2026
Decreased
DIMENSIONAL FUND ADVISORS LP
Rank #15
1.36%
- Shares
- 677.50K
- Change
- +28.14K
- Change %
- +4.33%
- Filing
- Mar 31, 2026
Increased
NORGES BANK
Rank #16
1.33%
- Shares
- 664.75K
- Change
- -48.22K
- Change %
- -6.76%
- Filing
- Dec 31, 2025
Decreased
FISHER ASSET MANAGEMENT
Rank #17
1.30%
- Shares
- 649.98K
- Change
- -52.02K
- Change %
- -7.41%
- Filing
- Mar 31, 2026
Decreased
INVESCO LTD.
Rank #18
1.27%
- Shares
- 632.80K
- Change
- +505.86K
- Change %
- +3.98%
- Filing
- Mar 31, 2026
Increased
PRICE T ROWE ASSOCIATES INC
Rank #19
1.21%
- Shares
- 605.78K
- Change
- -74.48K
- Change %
- -10.95%
- Filing
- Mar 31, 2026
Decreased
JANE STREET GROUP
Rank #20
1.21%
- Shares
- 604.69K
- Change
- +602.67K
- Change %
- —
- Filing
- Mar 31, 2026
Increased
| # | Institution | % held | Shares | Change | Change % | Filing date |
|---|---|---|---|---|---|---|
| 1 | 11.2% | 5.58M | -91.10K Decreased | -1.61% | Dec 31, 2025 | |
| 2 | 11.1% | 5.53M | +602.44K Increased | +12.21% | Mar 31, 2026 | |
| 3 | 5.50% | 2.74M | +2.74M Initiated | — | Mar 31, 2026 | |
| 4 | 4.46% | 2.22M | +2.22M Initiated | — | Mar 31, 2026 | |
| 5 | 3.01% | 1.50M | +40.41K Increased | +2.77% | Mar 31, 2026 | |
| 6 | 2.43% | 1.21M | +83.48K Increased | +7.40% | Mar 31, 2026 | |
| 7 | POINT72 ASSET MANAGEMENT | 2.41% | 1.20M | +818.89K Increased | +2.13% | Mar 31, 2026 |
| 8 | PARADIGM CAPITAL MANAGEMENT INC | 2.21% | 1.10M | -23.40K Decreased | -2.08% | Mar 31, 2026 |
| 9 | WILLIAM BLAIR INVESTMENT MANAGEMENT | 1.93% | 964.21K | -762.37K Decreased | -44.16% | Mar 31, 2026 |
| 10 | VOYA INVESTMENT MANAGEMENT LLC | 1.84% | 917.15K | -54.09K Decreased | -5.57% | Mar 31, 2026 |
| 11 | 1.66% | 828.98K | +377.62K Increased | +83.66% | Mar 31, 2026 | |
| 12 | THRIVENT FINANCIAL FOR LUTHERANS | 1.48% | 739.29K | -221.62K Decreased | -23.06% | Mar 31, 2026 |
| 13 | 1.45% | 722.58K | +205.39K Increased | +39.71% | Mar 31, 2026 | |
| 14 | GENEVA CAPITAL MANAGEMENT LLC | 1.42% | 705.94K | -125.40K Decreased | -15.08% | Mar 31, 2026 |
| 15 | 1.36% | 677.50K | +28.14K Increased | +4.33% | Mar 31, 2026 | |
| 16 | 1.33% | 664.75K | -48.22K Decreased | -6.76% | Dec 31, 2025 | |
| 17 | FISHER ASSET MANAGEMENT | 1.30% | 649.98K | -52.02K Decreased | -7.41% | Mar 31, 2026 |
| 18 | 1.27% | 632.80K | +505.86K Increased | +3.98% | Mar 31, 2026 | |
| 19 | 1.21% | 605.78K | -74.48K Decreased | -10.95% | Mar 31, 2026 | |
| 20 | JANE STREET GROUP | 1.21% | 604.69K | +602.67K Increased | — | Mar 31, 2026 |
Showing 20 of 120 matching institutional rows.Load more institutions
Recent insider transactions
Onto Innovation Inc (ONTO) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
KELLEY, STEPHEN DOUGLAS
Director
- Shares
- 761
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 20, 2026
SEAMS, CHRISTOPHER A
Director
- Shares
- 761
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 20, 2026
LYNCH, SUSAN D
Director
- Shares
- 761
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 20, 2026
SU, MAY
Director
- Shares
- 761
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 20, 2026
SCHWARTZ, STEPHEN S
Director
- Shares
- 761
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 20, 2026
MILLER, DAVID BRIAN
Director
- Shares
- 761
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 20, 2026
YALDAEI, RAMIL
Chief Operating Officer
- Shares
- 218
- % company
- <0.01%
- Price
- $271.77
- Value
- $59,246
Filed May 15, 2026
YALDAEI, RAMIL
Chief Operating Officer
- Shares
- 625
- % company
- <0.01%
- Price
- $271.77
- Value
- $169,856
Filed May 15, 2026
OH, YOON AH
SVP, Gen Counsel & Corp Sec
- Shares
- 530
- % company
- <0.01%
- Price
- $271.77
- Value
- $144,038
Filed May 15, 2026
OH, YOON AH
SVP, Gen Counsel & Corp Sec
- Shares
- 417
- % company
- <0.01%
- Price
- $207.50
- Value
- $86,528
Filed Mar 3, 2026
PLISINSKI, MICHAEL P
Director, Chief Executive Officer
- Shares
- 3.74K
- % company
- <0.01%
- Price
- $207.50
- Value
- $776,465
Filed Mar 3, 2026
YALDAEI, RAMIL
Chief Operating Officer
- Shares
- 615
- % company
- <0.01%
- Price
- $207.50
- Value
- $127,613
Filed Mar 3, 2026
| # | Insider | % company | Action | Shares | Price | Value | Filing date |
|---|---|---|---|---|---|---|---|
| 1 | KELLEY, STEPHEN DOUGLAS Director | <0.01% | Award / grant | 761 | No cash value | No cash value | May 20, 2026 |
| 2 | SEAMS, CHRISTOPHER A Director | <0.01% | Award / grant | 761 | No cash value | No cash value | May 20, 2026 |
| 3 | LYNCH, SUSAN D Director | <0.01% | Award / grant | 761 | No cash value | No cash value | May 20, 2026 |
| 4 | SU, MAY Director | <0.01% | Award / grant | 761 | No cash value | No cash value | May 20, 2026 |
| 5 | SCHWARTZ, STEPHEN S Director | <0.01% | Award / grant | 761 | No cash value | No cash value | May 20, 2026 |
| 6 | MILLER, DAVID BRIAN Director | <0.01% | Award / grant | 761 | No cash value | No cash value | May 20, 2026 |
| 7 | YALDAEI, RAMIL Chief Operating Officer | <0.01% | Sale to issuer | 218 | $271.77 | $59,246 | May 15, 2026 |
| 8 | YALDAEI, RAMIL Chief Operating Officer | <0.01% | Sale to issuer | 625 | $271.77 | $169,856 | May 15, 2026 |
| 9 | OH, YOON AH SVP, Gen Counsel & Corp Sec | <0.01% | Sale to issuer | 530 | $271.77 | $144,038 | May 15, 2026 |
| 10 | OH, YOON AH SVP, Gen Counsel & Corp Sec | <0.01% | Sale to issuer | 417 | $207.50 | $86,528 | Mar 3, 2026 |
| 11 | PLISINSKI, MICHAEL P Director, Chief Executive Officer | <0.01% | Sale to issuer | 3.74K | $207.50 | $776,465 | Mar 3, 2026 |
| 12 | YALDAEI, RAMIL Chief Operating Officer | <0.01% | Sale to issuer | 615 | $207.50 | $127,613 | Mar 3, 2026 |
Showing 12 of 120 matching Form 4 rows. Percent of company uses current shares outstanding when available.Load more insiders
Frequently asked
Common questions.
Who are the largest ONTO shareholders?
VANGUARD GROUP INC is the largest institutional holder in the loaded ONTO ownership feed, with 5.58 million shares, or about 11.18% of shares outstanding. The table ranks additional institutions by reported share count.
What is institutional ownership of ONTO?
The current TECHi snapshot has 120 loaded institutional rows for Onto Innovation Inc. 59 rows are marked increased or initiated, while 60 rows are marked decreased, with the latest holder filing dated Mar 31, 2026.
Where can I see Onto Innovation Inc insider transactions?
The insider transaction table currently shows 120 loaded Form 4 rows for ONTO, with the latest insider filing dated May 20, 2026. It separates purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are not confused with open-market trades.
Are ONTO insiders buying or selling?
The loaded ONTO Form 4 rows currently read Net selling: 66 sale rows and 0 purchase rows. Awards, gifts, conversions, and tax withholding are shown separately because they do not carry the same signal as open-market buying or selling.
Who is the most active ONTO insider in the loaded filings?
PLISINSKI, MICHAEL P is the most active insider by absolute share movement in the loaded ONTO rows, with 321,101 shares moving across the visible filing history. Review the action labels before treating that activity as buying or selling.