Axcelis Technologies ACLS Institutional Ownership

NASDAQ ACLS

$113.43 +0.13 (+0.11%)

As of: Sep 11, 2026 · 3:59 PM EDT

Institutions by Trading Activity

441 Institutions

Increased 234 53.1%

Unchanged 64 14.5%

Reduced 143 32.4%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

101.86%

▼-4.59 pp QoQ

Shares Held by Institutions

31.38Mn

of 30.81Mn outstanding

▼-1.79% QoQ

Shares Outstanding

30.81Mn

-573.53K held outside 13F filers

Institutional Investors

441

filed 13F for Jun 2026

▲+66 vs prior quarter

Net Shares Added (QoQ)

-573.13K

distributed since last quarter

Value of Holdings

$3.61Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Axcelis Technologies Inc (NASDAQ:ACLS) has 441 institutional investors with active 13F positions as of June 2026.

These investors collectively held 101.9% of Axcelis Technologies's outstanding shares in June 2026, down from 106.4% in March 2026.
Their total shares held in ACLS decreased -1.79% quarter over quarter, and separately, investors owning Axcelis Technologies increased 34.04% from a year ago.
During the quarter, 234 of these 441 funds increased positions in ACLS, 143 reduced exposure, and 64 held steady.
The aggregate institutional position in Axcelis Technologies amounted to 31.38Mn shares as of June 2026, down by 573.13K shares quarter on quarter, and down 385.17K shares year over year.
BlackRock, Inc. holds the largest position in ACLS at 5.03Mn shares as of June 30, 2026, or 16.33% of shares outstanding.
The largest buyers of Axcelis Technologies for the quarter ending June 2026 were FMR LLC (1.69Mn), Sixth Street Partners Management Company, L.P. (416.23K), BARROW HANLEY MEWHINNEY & STRAUSS LLC (392.18K), Invesco Ltd. (362.65K), EMERALD ADVISERS, LLC (234.23K).
The largest sellers of Axcelis Technologies for the quarter ending June 2026 were BALYASNY ASSET MANAGEMENT L.P. (748.34K), REINHART PARTNERS, LLC. (729.08K), AMERICAN CENTURY COMPANIES INC (582.04K), D. E. Shaw & Co., Inc. (411.38K), LSV ASSET MANAGEMENT (404.9K).
Per Business Quant data, the top 10 holders of Axcelis Technologies for the quarter ending June 2026 are BlackRock, Inc. (5.03Mn), FMR LLC (4.13Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (2.48Mn), VANGUARD CAPITAL MANAGEMENT LLC (1.39Mn), State Street Corp (1.23Mn), VICTORY CAPITAL MANAGEMENT INC (1.13Mn), REINHART PARTNERS, LLC. (928.66K), GEODE CAPITAL MANAGEMENT, LLC (833.61K), BNP Paribas Asset Management Holding S.A. (803.15K), DIMENSIONAL FUND ADVISORS LP (709.27K).

Form 13F Holdings

441 Institutional Holders

Report period 30 Jun, 2026

Total shares held 31.38Mn

Of outstanding 101.86%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	5,029,462	16.33%	▲92,688	+1.88%	$952.83Mn
2	FMR LLC	0000315066	4,125,902	13.39%	▲1,694,781	+69.71%	$781.65Mn
3	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	2,478,878	8.05%	▼9,415	-0.38%	$469.62Mn
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,386,518	4.50%	▲3,748	+0.27%	$262.68Mn
5	State Street Corp	0000093751	1,231,109	4.00%	▲42,064	+3.54%	$233.18Mn
6	VICTORY CAPITAL MANAGEMENT INC	0001040188	1,134,007	3.68%	▼144,998	-11.34%	$214.84Mn
7	REINHART PARTNERS, LLC.	0001080298	928,660	3.01%	▼729,085	-43.98%	$175.94Mn
8	GEODE CAPITAL MANAGEMENT, LLC	0001214717	833,607	2.71%	▲22,343	+2.75%	$157.96Mn
9	BNP Paribas Asset Management Holding S.A.	0001520354	803,151	2.61%	▼202,877	-20.17%	$152.16Mn
10	DIMENSIONAL FUND ADVISORS LP	0000354204	709,266	2.30%	▼134,831	-15.97%	$134.35Mn
11	BALYASNY ASSET MANAGEMENT L.P.	0001218710	616,196	2.00%	▼748,344	-54.84%	$116.74Mn
12	PRIMECAP MANAGEMENT CO/CA/	0000763212	610,451	1.98%	▼48,201	-7.32%	$115.65Mn
13	Invesco Ltd.	0000914208	527,724	1.71%	▲362,649	+219.69%	$99.98Mn
14	Sixth Street Partners Management Company, L.P.	0001812095	416,230	1.35%	▲416,230	0.00%	$78.85Mn
14	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	416,230	1.35%	▼29,539	-6.63%	$78.85Mn
15	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	394,455	1.28%	▲32,253	+8.90%	$74.73K
16	BARROW HANLEY MEWHINNEY & STRAUSS LLC	0000313028	392,240	1.27%	▲392,183	+688,040.40%	$74.31Mn
17	MANUFACTURERS LIFE INSURANCE COMPANY, THE	0000928047	383,760	1.25%	▼107,985	-21.96%	$72.70Mn
18	Northern Trust Corp	0000073124	382,027	1.24%	▼34,676	-8.32%	$72.38Mn
19	AMERICAN CENTURY COMPANIES INC	0000748054	369,879	1.20%	▼582,035	-61.14%	$70.07Mn

Showing 1 to 20 of 441 holders