Axcelis Ownership | Who Owns Axcelis?

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Axcelis Ownership Summary

Axcelis is owned by 90.22% institutional investors, 1.66% insiders, and 8.12% retail investors. Blackrock is the largest institutional shareholder, holding 17.79% of ACLS shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 6.08% of its assets in Axcelis shares.

ACLS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Axcelis	90.22%	1.66%	8.12%
Sector	Technology Stocks	50.69%	12.56%	36.75%
Idea	Semiconductor Stocks List	114.42%	7.19%	-21.61%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	5.81M	17.79%	$825.67M
Blackrock funding, inc. /de	4.86M	15.18%	$474.94M
Vanguard group	4.19M	13.06%	$408.69M
Reinhart partners	1.61M	5.02%	$157.23M
American century companies	1.35M	4.20%	$131.40M
State street	1.23M	3.84%	$120.11M
Victory capital management	972.16K	3.03%	$90.24M
Bnp paribas asset management	930.36K	2.90%	$90.84M
Geode capital management	926.74K	2.89%	$90.50M
Primecap management co/ca/	833.68K	2.60%	$81.40M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Reinhart partners	1.61M	5.11%	$157.23M
Qsm asset management	53.17K	3.69%	$5.17M
Soviero asset management, lp	31.00K	1.57%	$3.03M
Blackbarn capital partners lp	200.00K	1.40%	$19.53M
Penbrook management	16.89K	1.15%	$1.65M
Jackson square partners	27.34K	1.08%	$2.67M
New insight wealth advisors	27.01K	0.99%	$2.64M
Eagle bay advisors	11.49K	0.88%	$1.12M
Rede wealth	11.49K	0.88%	$1.12M
Globeflex capital l p	56.00K	0.84%	$5.47M

Top Buyers

Holder	Shares	% Assets	Change
Norges bank	515.96K	0.00%	515.96K
Lsv asset management	314.90K	0.07%	314.90K
Invesco	386.74K	0.01%	246.94K
Fmr	551.40K	0.00%	168.82K
Arrowstreet capital, limited partnership	117.80K	0.01%	117.80K

Top Sellers

Holder	Shares	% Assets	Change
Boston trust walden	460.29K	0.33%	-385.62K
Blackrock	5.81M	0.02%	-332.11K
American century companies	1.35M	0.07%	-313.70K
Rafferty asset management	-	-	-259.58K
Massachusetts financial services co /ma/	-	-	-233.01K

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	515.96K	0.00%	515.96K	$36.05M
Lsv asset management	314.90K	0.07%	314.90K	$30.75M
Arrowstreet capital, limited partnership	117.80K	0.01%	117.80K	$11.50M
Balyasny asset management	90.75K	0.01%	90.75K	$6.32M
Segall bryant & hamill	58.61K	0.08%	58.61K	$5.72M

Sold Out

Holder	Change
Dinuzzo private wealth	-2.00
Kelly financial services	-3.00
Mendota financial group	-3.00
Twin peaks wealth advisors	-3.00
Financial gravity asset management	-5.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	324	-2.11%	28,916,119	-3.41%	90	1.03%	159	-5.36%	103	-0.96%
Jun 30, 2025	339	7.96%	31,517,002	1.71%	98	1.07%	176	0.57%	102	22.89%
Mar 31, 2025	2	-99.42%	22,694	-99.93%	-	0.00%	2	-98.91%	-	-100.00%
Dec 31, 2024	332	-12.86%	30,738,912	3.13%	94	1.13%	174	-4.92%	94	-25.98%
Sep 30, 2024	380	-5.47%	29,801,666	-2.70%	91	1.04%	182	-11.22%	127	0.79%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	1.91M	6.08%	-
Vanguard Total Stock Mkt Idx Inv	1.03M	3.27%	-21.90K
Vanguard US Total Market Shares ETF	1.03M	3.20%	836.00
American Century U.S. Small Cap Value	1.02M	3.17%	170.00K
American Century Small Cap Value Inv	1.02M	3.17%	170.00K
iShares Russell 2000 ETF	781.93K	2.49%	-
Vanguard Small Cap Index	779.32K	2.48%	-5.31K
PRIMECAP Odyssey Aggressive Growth	791.68K	2.46%	13.31K
Vanguard Information Technology ETF	767.71K	2.44%	7.78K
Pacer US Small Cap Cash Cows 100 ETF	674.99K	2.10%	-4.90K

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 20, 2025	KURTZWEIL JOHN T	-	Sell	$104.17K
Aug 06, 2024	Titinger Jorge	-	Sell	$669.34K
May 20, 2024	KURTZWEIL JOHN T	-	Sell	$137.30K
Mar 11, 2024	Low Russell	PRESIDENT AND CEO	Buy	$49.45K
Feb 29, 2024	COOGAN JAMES GORDON	EVP AND CFO	Buy	$11.22K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	-
2025 Q3	-	-
2025 Q2	-	1
2025 Q1	-	-
2024 Q4	-	-

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 (4.86M shares, 15.18%), and Vanguard group (4.19M shares, 13.06%). Together, they hold 46.03% 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 5.11% of its assets in 1.61M Axcelis shares, valued at 157.23M$.

Who is the top mutual fund holder of Axcelis shares?

iShares Core S&P Small-Cap ETF is the top mutual fund holder of Axcelis shares, with 6.08% of its total shares outstanding invested in 1.91M Axcelis shares.

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