ONTOOnto Innovation Inc.

CSNew York Stock Exchange (XNYS)·USD

Identity

Security key: 19672
Ticker: ONTO
Type: CS — Common Stock
Exchange: New York Stock Exchange(XNYS)
Venue group: NYSE
Operating MIC: XNYS
Market: stocks
Locale: us
Currency: USD
Listed: 1999-11-12
Round lot: 100
Active: Yes
Last seen in a load: 2026-08-14 20:49
Vendor updated: 2026-08-13 06:09
Ticker root / suffix: ONTO

Detail

Enriched 2026-08-14 20:47

Market cap: $20,619,991,134.6
Shares outstanding (class): 49,074,247
Shares outstanding (weighted): 61,123,436
SIC: 3829 MEASURING & CONTROLLING DEVICES, NEC
Employees: 1,790
Location: WILMINGTON, MA
Homepage: https://www.ontoinnovation.com
Description: Onto Innovation Inc is engaged in the design, development, manufacture, and support of high-performance control metrology, defect inspection, lithography, and data analysis systems used by microelectronics device manufacturers. The Company and its subsidiaries currently operate in a single operating segment. The company mainly operates in the United States, Southeast Asia, China, Japan, and Europe, with Taiwan and South Korea the sources of total revenue.

Market cap and share counts drift.

Funds holding this security

294 funds · 301 positions · $2.55B reported value, as of 2026-03-31

All holders →

Fund	Ticker	Position value	% of fund	Balance	Match
iShares Core S&P Mid-Cap ETF iShares Trust	IJH	$337.13M	0.32%	1,643,961 NS	FIGI
VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS	VTI	$322.93M	0.02%	1,574,709 NS	FIGI
VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS	VB	$235.01M	0.14%	1,145,997 NS	FIGI
VANGUARD SMALL-CAP GROWTH INDEX FUND VANGUARD INDEX FUNDS	VBK	$131.59M	0.34%	641,667 NS	FIGI
VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS	VXF	$113.64M	0.14%	554,171 NS	FIGI
State Street SPDR S&P MidCap 400SM ETF Trust —	—	$76.74M	0.32%	374,236 NS	FIGI
Defiance Quantum ETF ETF Series Solutions	QTUM	$51.24M	1.57%	249,860 NS	FIGI
State Street(R) SPDR(R) Portfolio S&P 400(TM) M… SPDR SERIES TRUST	SPMD	$49.74M	0.32%	242,545 NS	FIGI
PGIM Jennison Small Company Fund Prudential Jennison Small Co Fund, Inc.	—	$48.17M	1.51%	234,891 NS	FIGI
VIP Mid Cap Portfolio Variable Insurance Products Fund III	—	$39.85M	0.50%	194,300 NS	FIGI
iShares Russell Mid-Cap ETF iShares Trust	IWR	$38.07M	0.08%	185,653 NS	FIGI
Bridge Builder Small/Mid Cap Growth Fund Bridge Builder Trust	—	$36.57M	0.40%	178,340 NS	FIGI
THRIVENT MID CAP STOCK PORTFOLIO Thrivent Series Fund, Inc.	—	$32.71M	1.87%	159,528 NS	FIGI
T. Rowe Price Integrated U.S. Small-Cap Growth … T. ROWE PRICE INTEGRATED EQUITY FUNDS, INC.	—	$31.68M	0.39%	154,503 NS	FIGI
iShares S&P Mid-Cap 400 Growth ETF iShares Trust	IJK	$29.68M	0.30%	144,731 NS	FIGI

How positions resolve to the securities master. FIGI_COMPOSITE is exact identifier equality — both sides got the FIGI from Bloomberg. TICKER is a narrow fallback used only where the master row carries no FIGI at all (2,389 rows do not, disproportionately Irish-domiciled US listings like LIN and ACN). Roughly 22% of all positions resolve to the master.

Funds holding this security

Identifiers

master.security_identifier

TICKERONTO
FIGI_COMPOSITEBBG000BPRN29
FIGI_SHARE_CLASSBBG001S5THX0
CIK0000704532
ISINUS6833441057
Resolved through OpenFIGI from a holdings ISIN, not supplied by the securities vendor.

Identifiers

Classification

classification.v_security_classification

Asset class: Equity
Sector: Information Technology
Industry: Semiconductors
Source: LLMunreviewed
Self-reported confidence: 0.9
Model: deepseek
Rationale: Onto Innovation provides semiconductor process control equipment, fitting the technology/semiconductors classification.

Classifications are unreviewed model output. All 5,771 assignments carry source = LLM and is_reviewed = false. Confidence is the model’s own estimate and is not calibrated — it clustered at 0.90–0.98 across the whole first pass, including rows that later proved wrong. Use it to order a review queue, not as a probability. Two share classes of one issuer can disagree.

Classification

Fund data

Not linked to a fund series.

Either this is not a fund, or it is one the SEC share-class snapshot cannot reach — commodity trusts and notes have no series ID at all.