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Axcelis Technologies (ACLS) Institutional Ownership

Axcelis Technologies logo
$115.08 +4.71 (+4.27%)
As of 09/4/2026 04:00 PM Eastern
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Institutional Ownership Changes (13F Filings) for Axcelis Technologies (NASDAQ:ACLS)

Current
Institutional Ownership
Percentage
89.98%
Number of
Institutional Buyers
(last 12 months)
189
Total
Institutional Inflows
(last 12 months)
$1.84B
Number of
Institutional Sellers
(last 12 months)
141
Total
Institutional Outflows
(last 12 months)
$485.24M
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ACLS Institutional Buying and Selling by Quarter

Axcelis Technologies Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/4/2026 Parkside Financial Bank & Trust827$157K0.0%-17.4%0.003%
8/27/2026 Corient Private Wealth LP7,792$1.48M0.0%+39.3%0.025%
8/25/2026 VIRGINIA RETIREMENT SYSTEMS ET Al12,638$2.39M0.0%N/A0.041%
8/24/2026 California State Teachers Retirement System6,715,434$1.27B0.0%+18,338.9%21.747%
8/23/2026 HB Wealth Management LLC1,124$213K0.0%N/A0.004%
8/22/2026 Odyssean LLC2,036$386K0.1%N/A0.007%
8/22/2026 Syon Capital LLC1,452$275K0.0%N/A0.005%
8/21/2026 Nykredit A S1,083$205K0.0%N/A0.004%
8/21/2026 B. Metzler seel. Sohn & Co. AG13,383$2.54M0.0%N/A0.043%
8/20/2026 Teza Capital Management LLC2,211$419K0.8%N/A0.007%
8/20/2026 BTG Pactual Asset Management US LLC1,173$222K0.0%N/A0.004%
8/20/2026 Greenleaf Trust1,804$342K0.0%N/A0.006%
8/19/2026 Wellington Management Group LLP68,987$13.07M0.0%N/A0.223%
8/18/2026 Public Employees Retirement System of Ohio431$82K0.0%N/A0.001%
8/14/2026 Ancora Advisors LLC500$95K0.0%N/A0.002%
8/14/2026 Paradigm Capital Management Inc. NY24,000$4.55M0.1%N/A0.078%
8/13/2026 Globeflex Capital L P39,162$7.42M0.9%N/A0.127%
8/10/2026 Great Lakes Advisors LLC31,556$5.98M0.0%N/A0.102%
8/6/2026 Bank of New York Mellon Corp204,964$38.83M0.0%N/A0.667%
7/10/2026 Handelsbanken Fonder AB9,300$1.76M0.0%+14.8%0.030%
7/10/2026 Perkins Coie Trust Co1,326$251K0.0%-51.8%0.004%
7/9/2026 Franklin Street Advisors Inc. NC1,130$214K0.0%N/A0.004%
7/9/2026 Tactive Advisors LLC2,080$394K0.1%N/A0.007%
7/8/2026 Reinhart Partners LLC.928,660$175.94M4.0%-44.0%3.022%
7/7/2026 Central Pacific Bank Trust Division3,765$713K0.1%N/A0.012%
7/2/2026 KERR FINANCIAL PLANNING Corp2,225$422K0.5%+3.5%0.007%
6/18/2026 Western Wealth Management LLC6,936$646K0.0%N/A0.023%
6/3/2026 Parallel Advisors LLC665$62K0.0%+22.0%0.002%
5/22/2026 Segall Bryant & Hamill LLC200,371$18.65M0.2%+96.1%0.652%
5/19/2026 Western Wealth Management LLC6,936$646K0.0%N/A0.023%
5/19/2026 Bank of America Corp DE110,999$10.33M0.0%-6.1%0.361%
5/19/2026 Edgestream Partners L.P.3,362$313K0.0%N/A0.011%
5/19/2026Janus Henderson Group PLC14,628$1.36M0.0%-65.0%0.048%
5/18/2026 Amundi40,627$3.78M0.0%+9.0%0.132%
5/18/2026 California State Teachers Retirement System36,420$3.39M0.0%+21.3%0.119%
5/18/2026 Royal Bank of Canada9,793$912K0.0%+154.4%0.032%
5/18/2026 Empowered Funds LLC39,087$3.64M0.0%+0.5%0.127%
5/16/2026 The Manufacturers Life Insurance Company491,745$45.77M0.0%+3,402.5%1.600%
5/16/2026 Quantinno Capital Management LP12,336$1.15M0.0%+10.0%0.040%
5/15/2026 Entropy Technologies LP10,790$1.00M0.0%N/A0.035%
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5/14/2026 Morningstar Investment Management LLC9,179$854K0.1%-8.5%0.030%
5/14/2026 Paradigm Capital Management Inc. NY24,000$2.23M0.1%-57.1%0.078%
5/14/2026 Sei Investments Co.45,035$4.19M0.0%+61.0%0.147%
5/14/2026 Lido Advisors LLC4,259$396K0.0%+17.9%0.014%
5/14/2026 Globeflex Capital L P44,455$4.14M0.6%-20.6%0.145%
5/14/2026 State of Wyoming393$37K0.0%-67.0%0.001%
5/13/2026 Cetera Investment Advisers5,127$477K0.0%-48.5%0.017%
5/13/2026 First Trust Advisors LP137,779$12.82M0.0%+55.9%0.448%
5/12/2026 ABN Amro Investment Solutions24,650$2.29M0.0%-0.6%0.080%
5/8/2026 PNC Financial Services Group Inc.2,168$202K0.0%-5.0%0.007%
5/7/2026 Dimensional Fund Advisors LP844,097$78.57M0.0%+0.4%2.747%
5/7/2026 Parallel Advisors LLC665$62K0.0%+22.0%0.002%
5/6/2026 Allspring Global Investments Holdings LLC258,536$24.69M0.0%-2.8%0.841%
5/5/2026 D.A. Davidson & CO.2,300$214K0.0%-12.8%0.007%
5/5/2026 Bank of New York Mellon Corp199,672$18.59M0.0%-1.9%0.650%
5/5/2026 Illinois Municipal Retirement Fund15,080$1.40M0.0%-3.1%0.049%
5/4/2026 Emerald Mutual Fund Advisers Trust47,412$4.41M0.2%N/A0.154%
5/4/2026 Emerald Advisers LLC96,238$8.96M0.3%N/A0.313%
5/4/2026 Empirical Financial Services LLC d.b.a. Empirical Wealth Management7,654$712K0.0%+36.5%0.025%
5/4/2026 Principal Financial Group Inc.210,202$19.57M0.0%+5.1%0.684%
5/1/2026 Commonwealth of Pennsylvania Public School Empls Retrmt SYS6,592$614K0.0%-1.2%0.021%
5/1/2026 Fifth Third Bancorp9,059$843K0.0%+2,290.2%0.029%
5/1/2026 ARGA Investment Management LP41,408$3.85M0.1%+123.4%0.135%
4/30/2026 Hsbc Holdings PLC11,443$1.07M0.0%-6.6%0.037%
4/30/2026 Peterson Wealth Services7,889$734K0.2%+6.6%0.026%
4/30/2026 Isthmus Partners LLC39,357$3.66M0.4%-5.1%0.128%
4/29/2026 KERR FINANCIAL PLANNING Corp2,150$200K0.3%-11.3%0.007%
4/29/2026 Burney Co.16,845$1.57M0.0%-31.9%0.055%
4/28/2026 Praxis Investment Management Inc.2,766$257K0.0%-43.3%0.009%
4/28/2026 QRG Capital Management Inc.9,596$893K0.0%+237.6%0.031%
4/27/2026 New York State Teachers Retirement System14,857$1.38M0.0%-6.4%0.048%
4/27/2026 Private Advisor Group LLC2,978$277K0.0%-92.3%0.010%
4/25/2026 Strs Ohio2,500$233K0.0%-26.5%0.008%
4/25/2026 Eagle Bay Advisors LLC6,200$577K0.5%+93.8%0.020%
4/25/2026 Boston Trust Walden Corp378,525$35.23M0.3%-11.5%1.232%
4/24/2026 James Investment Research Inc.3,408$317K0.0%-58.8%0.011%
4/22/2026 Janney Montgomery Scott LLC22,150$2.06M0.0%-1.3%0.072%
4/22/2026 Pictet Asset Management Holding SA4,881$454K0.0%+13.5%0.016%
4/22/2026 Sterling Capital Management LLC969$90K0.0%-42.0%0.003%
4/21/2026 Wealth Effects LLC3,571$332K0.1%-2.1%0.012%
4/21/2026 Wesbanco Bank Inc.12,800$1.19M0.0%N/A0.042%
4/21/2026 Penbrook Management LLC12,095$1.13M0.9%-23.9%0.039%
4/21/2026 Louisiana State Employees Retirement System13,600$1.27M0.0%N/A0.044%
4/18/2026 CENTRAL TRUST Co1,237$115K0.0%-8.4%0.004%
4/16/2026 SG Americas Securities LLC3,375$314K0.0%-76.2%0.011%
4/16/2026 Evolve Private Wealth LLC7,706$717K0.0%+9.6%0.025%
3/20/2026 Hsbc Holdings PLC12,254$991K0.0%-41.0%0.040%
3/17/2026 Rockefeller Capital Management L.P.1,357$109K0.0%+69.2%0.004%
3/9/2026 Corient Private Wealth LLC5,792$466K0.0%+4.0%0.019%
2/24/2026 Pacer Advisors Inc.3,615$290K0.0%-19.4%0.012%
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2/19/2026 Invesco Ltd.478,897$38.48M0.0%+23.8%1.560%
2/18/2026 Ameriflex Group Inc.1,180$95K0.0%N/A0.004%
2/18/2026 Mercer Global Advisors Inc. ADV3,721$299K0.0%+34.3%0.012%
2/18/2026 Vident Advisory LLC13,099$1.05M0.0%-4.1%0.043%
2/18/2026 State of Tennessee Department of Treasury6,867$605K0.0%-41.8%0.022%
2/18/2026 NewEdge Advisors LLC2,406$193K0.0%+130.2%0.008%
2/18/2026 Empowered Funds LLC38,888$3.12M0.0%+706.8%0.127%
2/18/2026 XTX Topco Ltd6,771$544K0.0%N/A0.022%
2/18/2026 Zacks Investment Management88,080$7.08M0.1%+335.8%0.287%
2/18/2026 Voloridge Investment Management LLC220,713$17.73M0.1%+131.8%0.719%


ACLS Institutional Ownership - Frequently Asked Questions

During the previous two years, 399 institutional investors and hedge funds held shares of Axcelis Technologies. The most heavily invested institutionals were California State Teachers Retirement System ($1.27B), Vanguard Group Inc. ($331.20M), Reinhart Partners LLC. ($175.94M), Victory Capital Management Inc. ($145.21M), American Century Companies Inc. ($131.40M), State Street Corp ($95.30M), and Dimensional Fund Advisors LP ($78.57M).Learn more on Axcelis Technologies' institutional investors.

89.98% of Axcelis Technologies' stock is owned by institutional investors. Learn more on ACLS's institutional investor holdings.

Of the 349 institutional investors that purchased Axcelis Technologies' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: California State Teachers Retirement System ($6.69M), Reinhart Partners LLC. ($1.19M), Victory Capital Management Inc. ($922.28K), American Century Companies Inc. ($890.05K), Boston Trust Walden Corp ($845.91K), Pacer Advisors Inc. ($781.15K), and Norges Bank ($666.55K).

Institutional investors have bought a total of 12,688,701 shares in the last 24 months. This purchase volume represents approximately $1.84B in transactions.

Of the 141 institutional investors that sold Axcelis Technologies' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Reinhart Partners LLC. ($749.52K), Boston Trust Walden Corp ($467.39K), American Century Companies Inc. ($313.70K), Bank of America Corp DE ($300.33K), Janus Henderson Group PLC ($220.78K), Voloridge Investment Management LLC ($216.61K), and Vanguard Group Inc. ($201.42K).

Institutional investors have sold a total of 4,539,989 shares in the last 24 months. This volume of shares sold represents approximately $485.24M in transactions.


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Institutional ownership data for NASDAQ:ACLS is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/4/2026. New 13F filings are added each quarter as they're published.
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