Axcelis Ownership | Who Owns Axcelis?

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Axcelis Ownership Summary

Axcelis is owned by 38.34% institutional investors, 0.57% insiders, and 61.09% retail investors. 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

Type	Name	% Inst	% Insiders	% Retail
Stock	Axcelis	38.34%	0.57%	61.09%
Sector	Technology Stocks	37.01%	14.89%	48.10%
Idea	Semiconductor Stocks List	48.16%	6.95%	44.89%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	5.81M	17.79%	$825.67M
Blackrock funding, inc. /de	4.94M	15.64%	$459.51M
Vanguard group	4.12M	13.17%	$331.20M
Fmr	2.43M	7.70%	$226.29M
Reinhart partners	1.66M	5.25%	$154.30M
Balyasny asset management	1.36M	4.32%	$127.01M
Victory capital management	1.28M	4.05%	$119.05M
State street	1.19M	3.77%	$110.68M
Bnp paribas asset management	1.01M	3.19%	$93.64M
American century companies	951.91K	3.01%	$88.60M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Reinhart partners	1.66M	4.44%	$154.30M
Qsm asset management	51.57K	2.27%	$4.63M
Jackson square partners	27.34K	1.08%	$2.67M
New insight wealth advisors	27.01K	0.99%	$2.64M
Penbrook management	12.10K	0.85%	$1.13M
Firsthand capital management	4.00K	0.79%	$372.32K
Illumine investment management	10.16K	0.73%	$945.97K
Globeflex capital l p	44.45K	0.63%	$4.14M
Yakira capital management	22.62K	0.62%	$2.11M
Sagefield capital lp	82.24K	0.55%	$7.65M

Top Buyers

Holder	Shares	% Assets	Change
Fmr	2.43M	0.01%	1.82M
Balyasny asset management	1.36M	0.16%	1.12M
Manufacturers life insurance company, the	491.75K	0.04%	477.70K
Morgan stanley	581.64K	0.00%	231.42K
Vanguard fiduciary trust	200.47K	0.00%	200.47K

Top Sellers

Holder	Shares	% Assets	Change
Victory capital management	1.28M	0.08%	-528.40K
Blackrock	5.81M	0.02%	-332.11K
Invesco	165.07K	0.00%	-313.82K
American century companies	951.91K	0.05%	-281.73K
Rafferty asset management	-	-	-259.58K

New Positions

Holder	Shares	% Assets	Change	Value
Vanguard fiduciary trust	200.47K	0.00%	200.47K	$18.66M
Emerald advisers	96.24K	0.28%	96.24K	$8.96M
Norges bank	88.15K	0.00%	88.15K	$7.08M
Sagefield capital lp	82.24K	0.55%	82.24K	$7.65M
Portolan capital management	77.17K	0.38%	77.17K	$7.18M

Sold Out

Holder	Change
Cedar mountain advisors	-1.00
Dunhill financial	-1.00
Kelly financial services	-3.00
Mendota financial group	-3.00
Financial gravity asset management	-5.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	231	-39.37%	12,105,398	-61.38%	38	0.39%	94	-48.07%	78	-38.10%
Dec 31, 2025	270	-28.76%	21,414,134	-29.60%	68	0.76%	124	-33.33%	87	-26.27%
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%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
NYLI Merger Arbitrage ETF	2.70M	8.78%	-
iShares Core S&P Small-Cap ETF	1.88M	6.11%	402.00
Vanguard Total Stock Mkt Idx Inv	984.26K	3.20%	5.90K
Vanguard US Total Market Shares ETF	1.03M	3.20%	836.00
Amundi Fds Global Equity A EUR C	982.07K	3.20%	374.20K
Vanguard Information Technology ETF	764.05K	2.49%	-857.00
iShares Russell 2000 ETF	733.78K	2.39%	6.20K
Vanguard Small Cap Index	709.15K	2.31%	5.43K
Pacer US Small Cap Cash Cows 100 ETF	674.99K	2.10%	-4.90K
PRIMECAP Odyssey Aggressive Growth	615.89K	2.00%	-6.10K

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 20, 2026	Tatnall Christopher	EVP Global Customer Operations	Sell	$174.61K
May 19, 2026	GRAVES GREGORY B	-	Sell	$85.51K
May 19, 2026	GRAVES GREGORY B	-	Sell	$371.19K
May 19, 2026	KURTZWEIL JOHN T	-	Sell	$485.77K
May 19, 2026	Quirk Jeanne	-	Sell	$250.85K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	13
2026 Q1	-	2
2025 Q4	-	2
2025 Q3	-	-
2025 Q2	-	1

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 (4.94M shares, 15.64%), and Vanguard group (4.12M shares, 13.17%). Together, they hold 46.59% 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 4.44% of its assets in 1.66M Axcelis shares, valued at 154.3M$.

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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