Company · Ownership research

ONTO INNOVATION INC. ONTO

CIK 0000704532 · CUSIP 683344105

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 683344105 (ONTO), not CUSIP 683344905 (ONTO), CUSIP 683344955 (ONTO), and does not merge CUSIPs.

This page lists the top 20 of 479 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$732.34M 5,667,404 shares	0.01%	+294.39K(+5.50%)Added	SEC filing ↗ Nov 7, 2025	▾
02	BlackRock, Inc. CIK 2012383 · View history	$673.66M 5,213,300 shares	0.01%	-1.27M(-19.60%)Reduced	SEC filing ↗ Nov 12, 2025	▾
03	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC CIK 1644956 · View history	$256.08M 1,981,761 shares	0.66%	+882.90K(+80.30%)Added	SEC filing ↗ Nov 12, 2025	▾
04	STATE STREET CORP CIK 93751 · View history	$190.63M 1,475,218 shares	0.01%	-14.28K(-1.00%)Reduced	SEC filing ↗ Nov 14, 2025	▾
05	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$180.78M 1,398,995 shares	0.03%	+1.29M(+1,217.00%)Added	SEC filing ↗ Nov 14, 2025	▾
06	FRANKLIN RESOURCES INC CIK 38777 · View history	$144.02M 1,114,501 shares	0.04%	+440.04K(+65.20%)Added	SEC filing ↗ Nov 13, 2025	▾
07	PARADIGM CAPITAL MANAGEMENT INC/NY CIK 1037792 · View history	$143.80M 1,112,839 shares	6.23%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2025	▾
08	GENEVA CAPITAL MANAGEMENT LLC CIK 1009232 · View history	$140.13M 1,084,447 shares	2.40%	+2.79K(+0.30%)Added	SEC filing ↗ Nov 13, 2025	▾
09	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$129.58M 1,002,810 shares	0.10%	+8.81K(+0.90%)Added	SEC filing ↗ Nov 14, 2025	▾
10	VOYA INVESTMENT MANAGEMENT LLC CIK 1068837 · View history	$111.97M 868,607 shares	0.11%	+849.70K(+4,494.60%)Added	SEC filing ↗ Oct 9, 2025	▾
11	FMR LLC CIK 315066 · View history	$107.28M 830,219 shares	0.01%	-563.37K(-40.40%)Reduced	SEC filing ↗ Nov 13, 2025	▾
12	MORGAN STANLEY CIK 895421 · Amended · View history	$102.14M 790,443 shares	0.01%	+338.61K(+74.90%)Added	SEC filing ↗ May 27, 2026	▾
13	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$100.28M 776,063 shares	0.01%	+256.93K(+49.50%)Added	SEC filing ↗ Nov 14, 2025	▾
14	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$100.20M 775,216 shares	0.01%	-102.75K(-11.70%)Reduced	SEC filing ↗ Nov 12, 2025	▾
15	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$90.28M 698,610 shares	0.02%	-78.49K(-10.10%)Reduced	SEC filing ↗ Nov 12, 2025	▾
16	Fisher Asset Management, LLC CIK 850529 · View history	$84.77M 656,002 shares	0.03%	+118.64K(+22.10%)Added	SEC filing ↗ Nov 12, 2025	▾
17	UBS Group AG CIK 1610520 · View history	$81.79M 632,932 shares	0.02%	-350.92K(-35.70%)Reduced	SEC filing ↗ Nov 13, 2025	▾
18	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$77.50M 599,737 shares	0.06%	-122.14K(-16.90%)Reduced	SEC filing ↗ Nov 14, 2025	▾
19	ROYAL BANK OF CANADA CIK 1000275 · View history	$73.28M 567,089 shares	0.01%	+208.79K(+58.30%)Added	SEC filing ↗ Nov 14, 2025	▾
20	Thrivent Financial for Lutherans CIK 314984 · View history	$65.88M 509,827 shares	0.13%	+215.27K(+73.10%)Added	SEC filing ↗ Nov 4, 2025	▾

Showing 20 / 479 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

479

Cancelled or null records excluded

Disclosed shares

47,419,519

Not deduplicated across managers

Disclosed value

$6.13B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

ONTO INNOVATION INC. · Q3 2025

Explore all 479 reporting institutions.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.