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Livermore
ZHEN

Axcelis Technologies Inc

ACLS
Exchange
Nasdaq
Industry
Special Industry Machinery, NEC
SEC CIK
0001113232

No open-market purchases or sales by Axcelis Technologies Inc insiders were filed in the last 90 days; 443 institutions reported holding it in 13F filings for Q2 2026, worth $5.85B in total; Maverick Capital is the only superinvestor holding it.

13F holders, Q1 2026

Institutional positions in Axcelis Technologies Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
380
+12 vs. Q4 2025
Shares held
32.6M
+5.48M (+20.2%) vs. Q4 2025
Total value
$3.03B
+$851.0M (+39.0%) vs. Q4 2025
New holders
70
99 more added
Sold out
58
134 more reduced

5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ACLS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2026: 380 institutions
Q1 2021: 193 institutionsQ2 2021: 189 institutionsQ3 2021: 205 institutionsQ4 2021: 254 institutionsQ1 2022: 290 institutionsQ2 2022: 277 institutionsQ3 2022: 287 institutionsQ4 2022: 327 institutionsQ1 2023: 379 institutionsQ2 2023: 406 institutionsQ3 2023: 421 institutionsQ4 2023: 421 institutionsQ1 2024: 385 institutionsQ2 2024: 393 institutionsQ3 2024: 369 institutionsQ4 2024: 325 institutionsQ1 2025: 307 institutionsQ2 2025: 330 institutionsQ3 2025: 362 institutionsQ4 2025: 373 institutionsQ1 2026: 380 institutionsQ2 2026: 443 institutions
Value heldQ1 2026: $3.03B
Q1 2021: $1.20BQ2 2021: $1.17BQ3 2021: $1.37BQ4 2021: $2.05BQ1 2022: $2.05BQ2 2022: $1.52BQ3 2022: $1.72BQ4 2022: $2.31BQ1 2023: $3.86BQ2 2023: $5.41BQ3 2023: $4.85BQ4 2023: $3.81BQ1 2024: $3.37BQ2 2024: $4.35BQ3 2024: $3.17BQ4 2024: $2.16BQ1 2025: $1.54BQ2 2025: $2.20BQ3 2025: $2.96BQ4 2025: $2.52BQ1 2026: $3.03BQ2 2026: $5.85B
Institutions holding ACLS and their total value by quarter
QuarterHoldersValue
Q2 2026443$5.85B
Q1 2026380$3.03B
Q4 2025373$2.52B
Q3 2025362$2.96B
Q2 2025330$2.20B
Q1 2025307$1.54B
Q4 2024325$2.16B
Q3 2024369$3.17B
Q2 2024393$4.35B
Q1 2024385$3.37B
Q4 2023421$3.81B
Q3 2023421$4.85B
Q2 2023406$5.41B
Q1 2023379$3.86B
Q4 2022327$2.31B
Q3 2022287$1.72B
Q2 2022277$1.52B
Q1 2022290$2.05B
Q4 2021254$2.05B
Q3 2021205$1.37B
Q2 2021189$1.17B
Q1 2021193$1.20B

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding Axcelis Technologies Inc; share changes are against Q4 2025.

Institutions holding ACLS in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Indiana Trust & Investment Management CO160$14.9K0.00%00.0%Unchanged
Assetmark, Inc145$13.5K0.00%+10+7.4%Added
MAI Capital Management142$13.2K0.00%+54+61.4%Added
Kozak & Associates, Inc.107$11.8K0.00%00.0%Unchanged
Rakuten Securities, Inc.116$10.8K0.00%−25−17.7%Reduced
Root Financial Partners, LLC114$10.6K0.00%+27+31.0%Added
Sound Income Strategies, LLC110$10.5K0.00%+1+0.9%Added
SHP Wealth Management105$9.77K0.00%00.0%Unchanged
Paladin Partners, LLC100$9.31K0.01%00.0%Unchanged
Pension & Wealth Management Advisors, Inc.95$8.84K0.00%00.0%Unchanged
Fourth Dimension Wealth, LLC92$8.56K0.00%00.0%Unchanged
Rothschild Investment LLC86$8.01K0.00%+11+14.7%Added
Pacer Advisors, Inc.78$7.00K0.00%−3,537−97.8%Reduced
Smithfield Trust Co80$7.00K0.00%00.0%Unchanged
CoreCap Advisors, LLC74$6.89K0.00%−77−51.0%Reduced
First Pacific Financial73$6.79K0.00%+21+40.4%Added
Private Wealth Management Group, LLC71$6.61K0.00%00.0%Unchanged
J.Safra Asset Management Corp68$6.33K0.00%+68New
Groesbeck Investment Management Corp62$6.00K0.01%00.0%Unchanged
IFP Advisors, Inc64$5.96K0.00%+20+45.5%Added
Key Financial Inc60$5.58K0.00%00.0%Unchanged
Carolina Wealth Advisors, LLC57$5.31K0.00%00.0%Unchanged
Barrow Hanley Mewhinney & Strauss LLC57$5.31K0.00%+57New
Kilter Group LLC54$5.03K0.00%−4−6.9%Reduced
Basecamp Wealth Advisors LLC54$5.03K0.00%00.0%Unchanged
LRI Investments, LLC46$4.28K0.00%−2,150−97.9%Reduced
Private Trust Co NA43$4.00K0.00%−51−54.3%Reduced
Spire Wealth Management43$4.00K0.00%+43New
Zions Bancorporation, National Association40$3.72K0.00%+27+207.7%Added
CWM Advisors, LLC37$3.45K0.00%+30+428.6%Added
Harbour Investments, Inc.33$3.07K0.00%−64−66.0%Reduced
Avion Wealth42$3.00K0.00%00.0%Unchanged
McIlrath & Eck, LLC32$2.98K0.00%00.0%Unchanged
Vision Financial Markets LLC30$2.79K0.00%00.0%Unchanged
McMillan Office, Inc.29$2.70K0.00%00.0%Unchanged
Fortitude Family Office, LLC29$2.70K0.00%+4+16.0%Added
WPG Advisers, LLC29$2.70K0.00%+29New
Prestige Wealth Management Group LLC28$2.61K0.00%00.0%Unchanged
Sankala Group LLC24$2.33K0.00%00.0%Unchanged
Creative Financial Designs Inc25$2.33K0.00%00.0%Unchanged
Truvestments Capital LLC25$2.33K0.00%00.0%Unchanged
Strengthening Families & Communities, LLC25$2.33K0.00%00.0%Unchanged
True Wealth Design, LLC25$2.33K0.00%00.0%Unchanged
Retirement Wealth Solutions LLC22$2.05K0.00%+1+4.8%Added
Johnson Financial Group, Inc.21$1.96K0.00%00.0%Unchanged
Farmers & Merchants Investments Inc20$1.86K0.00%−3−13.0%Reduced
Ronald Blue Trust, Inc.20$1.86K0.00%00.0%Unchanged
Optiver Holding B.V.19$1.77K0.00%−9−32.1%Reduced
CVA Family Office, LLC19$1.77K0.00%+19New
Simplex Trading, LLC19$1.77K0.00%−218−92.0%Reduced
Caitong International Asset Management Co., Ltd17$1.58K0.00%−89−84.0%Reduced
Bare Financial Services, Inc16$1.49K0.00%−9−36.0%Reduced
Whittier Trust Co of Nevada Inc15$1.46K0.00%00.0%Unchanged
Rossby Financial, LCC14$1.34K0.00%+14New
Investors Portfolio Services LLC8$1.31K0.00%+8New
Capital Advisors, Ltd. LLC7$1.00K0.00%00.0%Unchanged
Cornerstone Planning Group LLC7$9780.00%00.0%Unchanged
Manchester Capital Management LLC10$9310.00%00.0%Unchanged
Twin Peaks Wealth Advisors, LLC10$9310.00%+10New
Bruce G. Allen Investments, LLC9$8380.00%−1−10.0%Reduced
UMA Financial Services, Inc.8$7450.00%00.0%Unchanged
Bell Investment Advisors, Inc8$7450.00%00.0%Unchanged
JFS Wealth Advisors, LLC6$5590.00%−4−40.0%Reduced
DecisionPoint Financial, LLC6$5590.00%00.0%Unchanged
TD Capital Management LLC6$5580.00%00.0%Unchanged
USA Financial Portformulas Corp6$5580.00%00.0%Unchanged
Strategic Investment Solutions, Inc.6$5580.00%00.0%Unchanged
DiNuzzo Private Wealth, Inc.4$3730.00%00.0%Unchanged
SJS Investment Consulting Inc.4$3730.00%+3+300.0%Added
Ankerstar Wealth, LLC4$3720.00%00.0%Unchanged
Meramec Financial Planners, LLC2$2630.00%00.0%Unchanged
Abound Wealth Management2$1870.00%00.0%Unchanged
Rialto Wealth Management, LLC2$1870.00%00.0%Unchanged
Gilpin Wealth Management, LLC2$1870.00%00.0%Unchanged
HFM Investment Advisors, LLC2$1860.00%00.0%Unchanged
Vermillion Wealth Management, Inc.2$1860.00%+2New
TFC Financial Management1$940.00%00.0%Unchanged
Bay Harbor Wealth Management, LLC1$930.00%00.0%Unchanged
Essential Partners LLC1$930.00%00.0%Unchanged
Curio Wealth, LLC1$930.00%+1New
Arrowstreet Capital, Limited Partnership0$00.00%−212,050−100.0%Sold out
Clark Capital Management Group, Inc.0$00.00%−110,294−100.0%Sold out
BlackBarn Capital Partners LP0$00.00%−96,573−100.0%Sold out
Zacks Investment Management0$00.00%−88,080−100.0%Sold out
Jane Street Group, LLC0$00.00%−79,049−100.0%Sold out
Renaissance Technologies LLC0$00.00%−66,899−100.0%Sold out
Soviero Asset Management, LP0$00.00%−46,000−100.0%Sold out
F/M Investments LLC0$00.00%−40,294−100.0%Sold out
Bridgeway Capital Management, LLC0$00.00%−36,000−100.0%Sold out
Quest Partners LLC0$00.00%−26,367−100.0%Sold out
Algert Global LLC0$00.00%−25,340−100.0%Sold out
Aquatic Capital Management LLC0$00.00%−22,642−100.0%Sold out
Elo Mutual Pension Insurance Co0$00.00%−22,446−100.0%Sold out
Jackson Creek Investment Advisors LLC0$00.00%−22,054−100.0%Sold out
Verition Fund Management LLC0$00.00%−21,177−100.0%Sold out
Tudor Investment Corp Et Al0$00.00%−20,741−100.0%Sold out
Dynamic Technology Lab Private Ltd0$00.00%−19,470−100.0%Sold out
Mizuho Markets Cayman LP0$00.00%−18,816−100.0%Sold out
Wakefield Asset Management LLLP0$00.00%−18,133−100.0%Sold out
Oliver Luxxe Assets LLC0$00.00%−18,063−100.0%Sold out