Axcelis Ownership | Who Owns Axcelis?


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Axcelis Ownership Summary


Axcelis is owned by 102.01% institutional investors, 0.68% insiders. Blackrock is the largest institutional shareholder, holding 17.79% of ACLS shares. NYLI Merger Arbitrage ETF is the top mutual fund, with 8.78% of its assets in Axcelis shares.

ACLS Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockAxcelis102.01%0.68%-2.69%
SectorTechnology Stocks 53.74%14.92%31.34%
IdeaSemiconductor Stocks List 73.13%6.84%20.03%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock5.81M17.79%$825.67M
Blackrock funding, inc. /de5.03M16.37%$952.83M
Fmr4.13M13.43%$781.65M
Vanguard group4.12M13.17%$331.20M
Vanguard capital management1.39M4.51%$262.68M
State street1.23M4.01%$233.18M
Victory capital management1.13M3.69%$214.84M
Reinhart partners928.66K3.02%$175.94M
Geode capital management833.61K2.71%$157.96M
Bnp paribas asset management803.15K2.61%$152.16M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Reinhart partners928.66K4.02%$175.94M
Sagefield capital lp133.77K1.88%$25.34M
Old west investment management90.33K1.81%$17.11M
Alpine associates management134.91K1.60%$25.56M
Emerald advisers330.47K1.47%$62.61M
Emerald mutual fund advisers trust219.44K1.46%$41.57M
Penbrook management10.89K1.32%$2.06M
Firsthand capital management4.00K1.21%$757.80K
Jackson square partners27.34K1.08%$2.67M
New insight wealth advisors27.01K0.99%$2.64M

Top Buyers

HolderShares% AssetsChange
Fmr4.13M0.03%1.69M
Sixth street partners management company416.23K0.01%416.23K
Barrow hanley mewhinney & strauss392.24K0.23%392.18K
Invesco527.72K0.01%362.65K
Emerald advisers330.47K1.47%234.23K

Top Sellers

HolderShares% AssetsChange
Balyasny asset management616.20K0.15%-748.34K
Reinhart partners928.66K4.02%-729.09K
American century companies369.88K0.03%-582.03K
D. e. shaw133.04K0.01%-411.38K
Lsv asset management24.60K0.01%-404.90K

New Positions

HolderShares% AssetsChangeValue
Sixth street partners management company416.23K0.01%416.23K$78.85M
Alpine associates management134.91K1.60%134.91K$25.56M
Weiss asset management lp103.26K0.20%103.26K$19.56M
Wellington management group llp68.99K0.00%68.99K$13.07M
Axa investment managers52.18K0.01%52.18K$5.09M

Sold Out

HolderChange
Cedar mountain advisors-1.00
Dunhill financial-1.00
Curio wealth-1.00
Vermillion wealth management-2.00
Mendota financial group-3.00

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Jun 30, 202645215.60%31,340,503-3.71%1020.91%22832.56%1425.97%
Mar 31, 2026231-39.37%12,105,398-61.38%380.39%94-48.07%78-38.10%
Dec 31, 2025270-28.76%21,414,134-29.60%680.76%124-33.33%87-26.27%
Sep 30, 2025324-2.11%28,916,119-3.41%901.03%159-5.36%103-0.96%
Jun 30, 20253397.96%31,517,0021.71%981.07%1760.57%10222.89%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
NYLI Merger Arbitrage ETF2.70M8.78%-
iShares Core S&P Small-Cap ETF1.87M6.06%-1.46K
Vanguard US Total Market Shares ETF1.03M3.20%836.00
Vanguard Morn Total Stk Mkt Idx Investor977.07K3.18%-3.88K
Vanguard Total Stock Mkt Idx Inv977.07K3.18%-3.88K
Amundi Fds Global Equity A EUR C886.51K2.88%3.11K
iShares Russell 2000 ETF797.12K2.58%-14.11K
Vanguard Information Technology ETF742.02K2.41%4.72K
Vanguard Small Cap Index704.97K2.29%-1.73K
Pacer US Small Cap Cash Cows 100 ETF674.99K2.10%-4.90K

Recent Insider Transactions


DateNameRoleActivityValue
Jun 03, 2026Sayiner Necip-Sell$249.70K
May 27, 2026Sutton Todd VP Corporate ControllerSell$319.98K
May 22, 2026St Dennis Thomas-Sell$139.83K
May 22, 2026Evans Eileen EVP, General Counsel and Sec'ySell$144.00K
May 21, 2026Blumenstock Gerald M EVP, Research, Dev. & Eng.Sell$177.28K

Insider Transactions Trends


DateBuySell
2026 Q3--
2026 Q2-18
2026 Q1-2
2025 Q4-2
2025 Q3--

ACLS Ownership FAQ


Who owns the most shares of Axcelis?

Axcelis’s largest shareholders are Blackrock (5.81M shares, 17.79%), Blackrock funding, inc. /de (5.03M shares, 16.37%), and Fmr (4.13M shares, 13.43%). Together, they hold 47.59% of Axcelis’s total shares outstanding.

Does Blackrock own Axcelis?

Yes, BlackRock owns 17.79% of Axcelis, totaling 5.81M shares as of Jun 2024. This represents 0.02% of BlackRock's total assets, with a market value of 825.67M$. In the last quarter, BlackRock decreased its holdings by -332K shares, a -5.41% change.

Who is Axcelis’s biggest shareholder by percentage of total assets invested?

Reinhart partners is Axcelis’s biggest shareholder by percentage of total assets invested, with 4.02% of its assets in 928.66K Axcelis shares, valued at 175.94M$.

Who is the top mutual fund holder of Axcelis shares?

NYLI Merger Arbitrage ETF is the top mutual fund holder of Axcelis shares, with 8.78% of its total shares outstanding invested in 2.7M Axcelis shares.

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