CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

Pension

Position in ACLS — Axcelis Technologies Inc

CIK 1081019 WEST SACRAMENTO, CA

Back to ACLS Full portfolio

Position in ACLS

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

Position Value

$3,389,973

+$977,363 QoQ

Shares Held

36,420

+21.3% QoQ

Ownership

0.119%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in ACLS 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. ACLS ranks #13 (0.3% 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.	56,775	$11,642,849
8	FORM	Formfactor Inc	89,629	$8,693,116

All Filings in ACLS

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$3,389,973	36,420	+21.3%	Shares	Sole	2026-05-18
2025-12-31	$2,412,610	30,030	-0.3%	Shares	Sole	2026-02-17
2025-09-30	$2,941,990	30,131	+0.0%	Shares	Sole	2025-11-14
2025-06-30	$2,099,759	30,130	+1.2%	Shares	Sole	2025-08-14
2025-03-31	$1,478,775	29,772	-2.4%	Shares	Sole	2025-05-15
2024-12-31	$2,131,524	30,507	-0.9%	Shares	Sole	2025-03-18
2024-09-30	$3,226,863	30,776	-3.3%	Shares	Sole	2025-04-04
2024-06-30	$4,526,192	31,832	-3.3%	Shares	Sole	2025-04-08
2024-03-31	$3,672,799	32,934	-4.8%	Shares	Sole	2024-05-16
2023-12-31	$4,488,052	34,606	-4.2%	Shares	Sole	2024-02-13
2023-09-30	$5,890,018	36,124	-8.9%	Shares	Sole	2023-11-14
2023-06-30	$7,268,301	39,646	-3.3%	Shares	Sole	2023-08-21
2023-03-31	$5,465,382	41,016	-1.8%	Shares	Sole	2023-05-09
2022-12-31	$3,316,375	41,789	+1.1%	Shares	Sole	2023-02-14
2022-09-30	$2,502,278	41,319	-2.4%	Shares	Sole	2022-11-21
2022-06-30	$2,322,693	42,354	-0.5%	Shares	Sole	2022-08-15
2022-03-31	$3,216,067	42,580	-8.7%	Shares	Sole	2022-05-16
2021-12-31	$3,475,390	46,612	+2.0%	Shares	Sole	2022-02-15
2021-09-30	$2,149,176	45,698	-0.4%	Shares	Sole	2021-11-15
2021-06-30	$1,854,307	45,876	-8.6%	Shares	Sole	2021-08-16
2021-03-31	$2,062,553	50,196	-0.4%	Shares	Sole	2021-05-18
2020-12-31	$1,467,269	50,387	+1.2%	Shares	Sole	2021-02-16
2020-09-30	$1,095,160	49,780	0.0%	Shares	Sole	2020-11-17
2020-06-30	$1,386,373	49,780	+2.2%	Shares	Sole	2020-08-17
2020-03-31	$892,026	48,718	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.