Arcellx Ownership | Who Owns Arcellx?

Overview Forecast RevenueFinancials Chart

Arcellx Ownership Summary

Arcellx is owned by 9.59% institutional investors, 12.91% insiders, and 77.49% retail investors. Gilead sciences is the largest institutional shareholder, holding 11.94% of ACLX shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.16% of its assets in Arcellx shares.

ACLX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Arcellx	9.59%	12.91%	77.49%
Sector	Healthcare Stocks	232.86%	10.65%	-143.51%
Industry	Biotech Stocks	382.13%	10.41%	-292.54%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Gilead sciences	6.72M	11.94%	$771.68M
T. rowe price investment management	6.35M	11.30%	$521.53M
Fmr	5.76M	10.25%	$473.00M
Paradigm biocapital advisors lp	4.65M	8.27%	$381.68M
Vanguard group	4.08M	7.21%	$266.12M
Blackrock	3.52M	6.67%	$194.07M
Blackrock funding, inc. /de	3.55M	6.27%	$231.38M
Nea management company	3.05M	5.42%	$250.02M
Ra capital management	3.04M	5.40%	$249.30M
Perceptive advisors	2.47M	4.39%	$202.65M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Aju ib investment	223.49K	84.07%	$25.66M
Gilead sciences	6.72M	36.44%	$771.68M
Sr one capital management, lp	2.35M	21.66%	$153.00M
Nea management company	3.05M	13.72%	$250.02M
Paradigm biocapital advisors lp	4.65M	10.86%	$381.68M
Chicago capital management	92.95K	6.66%	$8.04M
Perceptive advisors	2.47M	5.85%	$202.65M
Cibra capital	88.62K	4.91%	$10.18M
Vestal point capital, lp	1.25M	4.63%	$102.63M
Cormorant asset management, lp	775.00K	4.39%	$63.63M

Top Buyers

Holder	Shares	% Assets	Change
T. rowe price investment management	6.35M	0.32%	4.41M
Jpmorgan chase	1.45M	0.01%	571.97K
Blackrock	3.52M	0.00%	450.30K
Alpine associates management	378.00K	2.56%	378.00K
Vanguard fiduciary trust	308.55K	0.01%	308.55K

Top Sellers

Holder	Shares	% Assets	Change
Vestal point capital, lp	1.25M	4.63%	-1.50M
Capital world investors	-	-	-783.01K
Nea management company	3.05M	13.72%	-700.00K
Suvretta capital management	-	-	-689.95K
Decheng capital	-	-	-547.61K

New Positions

Holder	Shares	% Assets	Change	Value
Alpine associates management	378.00K	2.56%	378.00K	$43.40M
Vanguard fiduciary trust	308.55K	0.01%	308.55K	$35.43M
Logos global management lp	165.00K	1.21%	165.00K	$13.55M
Integral health asset management	150.00K	0.83%	150.00K	$12.31M
Credit industriel et commercial	134.65K	1.20%	134.65K	$15.46M

Sold Out

Holder	Change
Dunhill financial	-1.00
Quantbot technologies lp	-1.00
Massmutual trust co fsb/adv	-1.00
Principal securities	-3.00
Rise advisors	-7.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2025	54	-75.34%	5,428,377	-91.39%	9	0.08%	27	-68.97%	17	-79.52%
Sep 30, 2025	71	-66.35%	7,468,701	-87.83%	13	0.11%	31	-66.67%	27	-67.47%
Jun 30, 2025	209	-0.48%	61,373,108	-0.32%	109	0.88%	91	-11.65%	83	16.90%
Mar 31, 2025	209	-5.00%	61,558,855	4.06%	111	0.92%	103	-18.25%	71	22.41%
Dec 31, 2024	218	8.46%	58,110,509	17.41%	107	1.28%	123	14.95%	59	-3.28%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	1.85M	3.16%	-15.80K
T. Rowe Price Capital Appreciation	1.38M	2.36%	-1.38M
Vanguard Small Cap Index	1.35M	2.31%	693.89K
T. Rowe Price US Mid-Cap Growth Equity	1.21M	2.07%	428.90K
T. Rowe Price Mid-Cap Growth	1.21M	2.06%	-1.00K
iShares Russell 2000 ETF	936.94K	1.60%	-
T. Rowe Price US Small-Cap Core Equity	917.84K	1.57%	200.31K
T. Rowe Price Small-Cap Stock	916.45K	1.57%	-1.39K
Fidelity Growth Compy Commingled Pl O	764.28K	1.42%	-
American Funds SMALLCAP World A	783.01K	1.42%	73.64K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Feb 27, 2026	Elghandour Rami	SEE REMARKS	Sell	$10.24M
Feb 25, 2026	Gilson Michelle	CHIEF FINANCIAL OFFICER	Sell	$1.28M
Feb 19, 2026	Gilson Michelle	CHIEF FINANCIAL OFFICER	Sell	$194.99K
Feb 19, 2026	Gilson Michelle	CHIEF FINANCIAL OFFICER	Sell	$370.63K
Feb 19, 2026	Gilson Michelle	CHIEF FINANCIAL OFFICER	Sell	$6.94K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	-
2026 Q1	-	11
2025 Q4	-	4
2025 Q3	-	7
2025 Q2	-	6

ACLX Ownership FAQ

Who Owns Arcellx?

Arcellx shareholders are primarily institutional investors at 9.59%, followed by 12.91% insiders and 77.50% retail investors. The average institutional ownership in Arcellx's industry, Biotech Stocks , is 382.13%, which Arcellx falls below.

Who owns the most shares of Arcellx?

Arcellx’s largest shareholders are Gilead sciences (6.72M shares, 11.94%), T. rowe price investment management (6.35M shares, 11.30%), and Fmr (5.76M shares, 10.25%). Together, they hold 33.48% of Arcellx’s total shares outstanding.

Does Blackrock own Arcellx?

Yes, BlackRock owns 6.67% of Arcellx, totaling 3.52M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 194.07M$. In the last quarter, BlackRock increased its holdings by 450.3K shares, a 14.69% change.

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

Aju ib investment is Arcellx’s biggest shareholder by percentage of total assets invested, with 84.07% of its assets in 223.49K Arcellx shares, valued at 25.66M$.

Who is the top mutual fund holder of Arcellx shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Arcellx shares, with 3.16% of its total shares outstanding invested in 1.85M Arcellx shares.

Try Tickergate Pro Free

Customize Everything. 100% Flexibility. Fast and Easy to Use (No code or Excel Needed)

Customize your own personal stocks lists, views and charts
Choose from hundreds of fields, up to 15 years of history
Conduct deep comparison analysis

Discover trending investment themes
Find your next best investment
Research stocks using tools