AXCELIS TECHNOLOGIES INC

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ACLS·054540208·US·Common Stock·Technology - Semiconductor Equipment & Materials-13D/G

ACLS (AXCELIS TECHNOLOGIES INC) is held by 184 institutional investors as of Q2 2026. Largest holders: BlackRock, Inc. ($952.8M), FMR LLC ($781.7M), VANGUARD PORTFOLIO MANAGEMENT LLC ($469.6M). Net institutional sentiment: Mixed.

184

Holders

(13 Elite)

$5.2B

Total Value

54% (192)

Consensus

103 buying - 89 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)70

Insider (Form 4)80

Activist (13D/13G)64

Congressional (STOCK Act)82

Holder Quality

80

★★★★★

Elite

62

★★★★

Strong

88

★★★

Solid

46

★★

Below

79

★

Weak

Held by 184 funds

13 elite

Who's Trading

Source dates: Price Aug 28, 2026 · Insiders Jun 3, 2026 · Activists Aug 6, 2026 · Congress none

ActivistFMR LLC13.4%Aug 6, 2026

ActivistREREINHART PARTNERS, LLC.3.0%Jul 14, 2026

InsiderMJMahoney Robert JohnSell $179KJun 2, 2026

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Top Holders

Top Holders (184)History

AllNewIncreasedHeldDecreasedExited

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Increased	5M(+1.9%)	$952.8M	0.0%	+59.24%	32
FMR LLC	Increased	4.1M(+69.7%)	$781.7M	0.0%	-9.12%	47
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Decreased	2.5M(-0.4%)	$469.6M	0.0%	+24.16%	0
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	1.4M(+0.3%)	$262.7M	0.0%	+23.82%	31
STATE STREET CORP	Increased	1.2M(+3.5%)	$233.2M	0.0%	-9.73%	32
VICTORY CAPITAL MANAGEMENT INC	Decreased	1.1M(-11.3%)	$214.8M	0.1%	+51.27%	0
GEODE CAPITAL MANAGEMENT, LLC	Increased	833,607(+2.8%)	$158M	0.0%	+73.38%	31
BNP Paribas Asset Management Holding S.A.	Decreased	803,151(-20.2%)	$152.2M	0.2%	+36.84%	0
DIMENSIONAL FUND ADVISORS LP	Decreased	709,266(-16.0%)	$134.3M	0.0%	-3.37%	0
BALYASNY ASSET MANAGEMENT L.P.	Decreased	616,196(-54.8%)	$116.7M	0.1%	+35.83%	0
PRIMECAP MANAGEMENT CO/CA/	Decreased	610,451(-7.3%)	$115.6M	0.1%	+514.41%	0
Invesco Ltd.	Increased	527,724(+219.7%)	$100M	0.0%	-28.36%	48
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Decreased	416,230(-6.6%)	$78.9M	0.0%	+58.74%	0
BARROW HANLEY MEWHINNEY & STRAUSS LLC	Increased	392,240(+6880x)	$74.3M	0.2%	-38.99%	57
MANUFACTURERS LIFE INSURANCE COMPANY, THE	Decreased	383,760(-22.0%)	$72.7M	0.1%	+34.95%	0
NORTHERN TRUST CORP	Decreased	382,027(-8.3%)	$72.4M	0.0%	+163.95%	0
AMERICAN CENTURY COMPANIES INC	Decreased	369,879(-61.1%)	$70.1M	0.0%	+34.81%	0
MORGAN STANLEY	Decreased	366,077(-37.1%)	$69.4M	0.0%	+1.27%	0
Boston Trust Walden Corp	Decreased	359,256(-5.1%)	$68.1M	0.5%	+25.31%	0
UBS Group AG	Decreased	320,891(-14.9%)	$60.8M	0.0%	+43.07%	0

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Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer