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Arcellx Ownership | Who Owns Arcellx?

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Arcellx Ownership Summary

Arcellx is owned by 107.97% institutional investors, 0.76% insiders. Fmr is the largest institutional shareholder, holding 14.78% of ACLX shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.52% of its assets in Arcellx shares.

ACLX Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockArcellx107.97%0.76%-8.73%
SectorHealthcare Stocks 57.38%9.40%33.23%
IndustryBiotech Stocks 68.91%8.92%22.17%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Fmr7.96M14.78%$610.19M
Gilead sciences6.72M12.49%$515.42M
Paradigm biocapital advisors lp4.37M8.12%$335.26M
Blackrock funding, inc. /de3.85M7.16%$295.56M
Nea management company3.75M6.96%$287.22M
Blackrock3.52M6.67%$194.07M
Perceptive advisors3.48M6.46%$266.80M
Vanguard group3.33M6.19%$255.38M
Ra capital management2.79M5.18%$213.76M
Sr one capital management, lp2.35M4.36%$179.96M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Sr one capital management, lp2.35M43.88%$179.96M
Gilead sciences6.72M33.23%$515.42M
Nea management company3.75M16.21%$287.22M
Paradigm biocapital advisors lp4.37M11.66%$335.26M
Perceptive advisors3.48M7.35%$266.80M
Artia global partners lp229.78K6.30%$17.62M
Cormorant asset management, lp1.30M5.48%$99.70M
Great point partners492.00K5.20%$27.15M
Affinity asset advisors425.00K4.37%$32.59M
Ra capital management2.79M2.84%$213.76M

Top Buyers

HolderShares% AssetsChange
Gilead sciences6.72M33.23%6.72M
Fmr7.96M0.04%1.48M
Ra capital management2.79M2.84%935.85K
Vanguard group3.33M0.00%868.00K
Blackrock3.52M0.00%450.30K

Top Sellers

HolderShares% AssetsChange
Suvretta capital management---689.95K
Janus henderson group1.56M0.06%-454.86K
Perceptive advisors3.48M7.35%-409.78K
Blackrock funding, inc. /de3.85M0.01%-392.67K
Adage capital partners gp---292.01K

New Positions

HolderShares% AssetsChangeValue
Gilead sciences6.72M33.23%6.72M$515.42M
Capital world investors252.88K0.00%252.88K$19.39M
Artia global partners lp229.78K6.30%229.78K$17.62M
Raymond james financial130.60K0.00%130.60K$10.02M
Jacobs levy equity management47.82K0.01%47.82K$2.64M

Sold Out

HolderChange
Global retirement partners-12.00
Nelson, van denburg & campbell wealth management group-19.00
Clear street markets-42.00
Pacer advisors-488.00
Newedge advisors-527.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Dec 31, 20242188.46%58,110,50917.41%1071.28%12314.95%59-3.28%
Sep 30, 202420119.64%49,489,251-1.47%911.04%1086.93%6122.00%
Jun 30, 2024165-10.33%50,204,7596.85%951.18%99-8.33%49-15.52%
Mar 31, 202418412.20%46,986,9530.53%890.97%10811.34%5820.83%
Dec 31, 202316419.71%46,737,584-1.77%960.99%9729.33%4826.32%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
Vanguard Total Stock Mkt Idx Inv1.36M2.52%3.52K
iShares Russell 2000 ETF1.12M2.05%-22.02K
Fidelity Select Biotechnology1.02M1.88%-27.10K
Fidelity Growth Compy Commingled Pl S908.22K1.68%132.41K
T. Rowe Price Health Sciences884.09K1.64%-2.34K
Fidelity Growth Compy Commingled Pl O764.28K1.42%-
SPDR® S&P Biotech ETF761.60K1.39%5.74K
Fidelity Small Cap Growth643.33K1.19%65.70K
Fidelity Growth Company Fund612.30K1.13%54.80K
Vanguard Institutional Extnd Mkt Idx Tr586.81K1.09%157.00

Recent Insider Transactions

DateNameRoleActivityValue
Feb 26, 2025Elghandour Rami SEE REMARKSSell$387.25K
Feb 26, 2025Elghandour Rami SEE REMARKSSell$682.62K
Feb 26, 2025Elghandour Rami SEE REMARKSSell$1.31M
Feb 25, 2025Patel Kavita-Sell$94.74K
Feb 24, 2025Heery Christopher CHIEF MEDICAL OFFICERSell$13.49K

Insider Transactions Trends

DateBuySell
2025 Q1-33
2024 Q4-23
2024 Q3-24
2024 Q2-16
2024 Q1-22

ACLX Ownership FAQ

Who Owns Arcellx?

Arcellx shareholders are primarily institutional investors at 107.97%, followed by 0.76% insiders and -8.73% retail investors. The average institutional ownership in Arcellx's industry, Biotech Stocks , is 68.91%, which Arcellx exceeds.

Who owns the most shares of Arcellx?

Arcellx’s largest shareholders are Fmr (7.96M shares, 14.78%), Gilead sciences (6.72M shares, 12.49%), and Paradigm biocapital advisors lp (4.37M shares, 8.12%). Together, they hold 35.39% 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?

Sr one capital management, lp is Arcellx’s biggest shareholder by percentage of total assets invested, with 43.88% of its assets in 2.35M Arcellx shares, valued at 179.96M$.

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 2.52% of its total shares outstanding invested in 1.36M Arcellx shares.

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