CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

Pension

Position in ONTO — Onto Innovation Inc.

CIK 1081019 WEST SACRAMENTO, CA

Back to ONTO Full portfolio

Position in ONTO

as of Mar 31, 2026 · filed May 18, 2026 Compact

Position Value

$11,642,849

+$4,301,728 QoQ

Shares Held

56,775

+22.1% QoQ

Ownership

0.114%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in ONTO Over Time

Shares Held

Position Value (USD)

Position in Semiconductor Equipment & Materials

Technology · as of Mar 31, 2026

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM holds $1,316,885,972 across 21 Semiconductor Equipment & Materials names. ONTO ranks #7 (0.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AMAT	Applied Materials Inc /De	1,224,298	$418,452,813
2	LRCX	Lam Research Corp	1,922,942	$410,855,787
3	KLAC	Kla Corp	200,858	$295,745,327
4	TER	Teradyne, Inc	248,462	$73,659,044
5	Q	Qnity Electronics, Inc.	264,442	$30,511,317
6	ENTG	Entegris Inc	236,045	$27,673,915
7	ONTO	Onto Innovation Inc. This page	56,775	$11,642,849
8	FORM	Formfactor Inc	89,629	$8,693,116

All Filings in ONTO

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$11,642,849	56,775	+22.1%	Shares	Sole	2026-05-18
2025-12-31	$7,341,121	46,504	-2.1%	Shares	Sole	2026-02-17
2025-09-30	$6,139,629	47,513	+0.0%	Shares	Sole	2025-11-14
2025-06-30	$4,795,285	47,511	0.0%	Shares	Sole	2025-08-14
2025-03-31	$5,764,984	47,511	+2.9%	Shares	Sole	2025-05-15
2024-12-31	$7,696,320	46,177	-0.9%	Shares	Sole	2025-03-18
2024-09-30	$9,675,824	46,617	-2.8%	Shares	Sole	2025-04-04
2024-06-30	$10,531,195	47,965	-2.6%	Shares	Sole	2025-04-08
2024-03-31	$8,919,819	49,259	-4.9%	Shares	Sole	2024-05-16
2023-12-31	$7,916,244	51,774	-4.3%	Shares	Sole	2024-02-13
2023-09-30	$6,899,724	54,107	-8.7%	Shares	Sole	2023-11-14
2023-06-30	$6,904,807	59,284	-4.3%	Shares	Sole	2023-08-21
2023-03-31	$5,444,078	61,949	-1.7%	Shares	Sole	2023-05-09
2022-12-31	$4,291,099	63,021	+1.3%	Shares	Sole	2023-02-14
2022-09-30	$3,985,319	62,222	-1.7%	Shares	Sole	2022-11-21
2022-06-30	$4,414,611	63,301	+0.8%	Shares	Sole	2022-08-15
2022-03-31	$5,456,605	62,799	-7.9%	Shares	Sole	2022-05-16
2021-12-31	$6,905,303	68,214	+2.7%	Shares	Sole	2022-02-15
2021-09-30	$4,800,073	66,437	-1.0%	Shares	Sole	2021-11-15
2021-06-30	$4,902,956	67,127	-6.3%	Shares	Sole	2021-08-16
2021-03-31	$4,709,238	71,667	-0.1%	Shares	Sole	2021-05-18
2020-12-31	$3,411,807	71,752	+0.0%	Shares	Sole	2021-02-16
2020-09-30	$2,135,910	71,723	+0.3%	Shares	Sole	2020-11-17
2020-06-30	$2,434,779	71,527	-2.2%	Shares	Sole	2020-08-17
2020-03-31	$2,170,627	73,159	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.