Go Pro
→ Trump's New Dollar (From Porter & Company) (Ad)tc pixel Free ACLX Stock Alerts

This company has been marked as potentially delisted and may not be actively trading.

Arcellx (ACLX) Institutional Ownership

Arcellx logo
Compare

Institutional Ownership Changes (13F Filings) for Arcellx (NASDAQ:ACLX)

Current
Institutional Ownership
Percentage
96.03%
Number of
Institutional Buyers
(last 12 months)
122
Total
Institutional Inflows
(last 12 months)
$879.41M
Number of
Institutional Sellers
(last 12 months)
73
Total
Institutional Outflows
(last 12 months)
$717.91M
Get ACLX Insider Trade Alerts

Want to know when executives and insiders are buying or selling Arcellx stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily.

Subscribe Now
SMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy.
Skip Chart & View Institutional Buying and Selling Data

ACLX Institutional Buying and Selling by Quarter

Arcellx Major Shareholders & Ownership History

Export
Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
6/16/2026Empowered Funds LLC2,010$231K0.0%N/A0.003%
6/15/2026Carmignac Gestion18,925$2.17M0.0%N/A0.032%
6/2/2026Optiver Holding B.V.226$26K0.0%+413.6%0.000%
5/21/2026Groupe la Francaise151,046$17.34M0.2%N/A0.258%
5/19/2026Bank of America Corp DE452,333$51.94M0.0%+5.7%0.773%
5/19/2026Janus Henderson Group PLC90,280$10.37M0.0%-90.2%0.154%
5/19/2026Oddo BHF Asset Management Sas115,000$13.20M0.5%N/A0.197%
5/18/2026ADAR1 Capital Management LLC32,084$3.68M0.2%+1.9%0.055%
5/18/2026California State Teachers Retirement System34,886$4.01M0.0%+28.7%0.060%
5/18/2026Empowered Funds LLC2,010$231K0.0%N/A0.003%
5/16/2026Torno Capital LLC7,285$836K0.1%N/A0.012%
5/16/2026The Manufacturers Life Insurance Company 11,965$1.37M0.0%-79.1%0.020%
5/16/2026Quantinno Capital Management LP5,277$606K0.0%+36.3%0.009%
5/15/2026Affinity Asset Advisors LLC362,764$41.65M2.1%-30.7%0.620%
5/14/2026Healthcare of Ontario Pension Plan Trust Fund30,000$3.45M0.0%N/A0.051%
5/14/2026Renaissance Technologies LLC96,400$11.07M0.0%N/A0.165%
5/14/2026Gabelli Funds LLC195,900$22.49M0.2%N/A0.335%
5/14/2026GABELLI & Co INVESTMENT ADVISERS INC.152,400$17.50M2.6%N/A0.261%
5/14/2026PSquared Asset Management AG55,251$6.34M2.2%N/A0.094%
5/14/2026Knott David M Jr19,433$2.23M1.3%-24.4%0.033%
5/14/2026Sei Investments Co.4,492$516K0.0%-71.3%0.008%
5/13/2026Transmarket Holdings LP6,557$753K0.4%N/A0.011%
5/8/2026PNC Financial Services Group Inc.580$67K0.0%+36.5%0.001%
5/7/2026Kapitalo Investimentos Ltda7,978$916K0.2%N/A0.014%
5/7/2026Meeder Advisory Services Inc.1,928$221K0.0%N/A0.003%
5/5/2026Marks Group Wealth Management Inc3,180$365K0.0%-29.7%0.005%
5/5/2026Bank of New York Mellon Corp143,099$16.43M0.0%+16.2%0.245%
5/4/2026ABC Arbitrage SA30,347$3.48M0.5%N/A0.052%
5/4/2026Principal Financial Group Inc.2,764$317K0.0%N/A0.005%
5/1/2026Fifth Third Bancorp382$44K0.0%N/A0.001%
4/29/2026Credit Industriel ET Commercial134,648$15.46M1.2%N/A0.230%
4/28/2026Abel Hall LLC2,602$299K0.1%N/A0.004%
4/28/2026Praxis Investment Management Inc.1,888$217K0.0%N/A0.003%
4/27/2026Chicago Capital Management LLC92,951$10.67M0.0%N/A0.159%
4/25/2026Strs Ohio4,300$494K0.0%-74.5%0.007%
4/24/2026Deltec Asset Management LLC3,750$431K0.1%N/A0.006%
4/22/2026Pictet Asset Management Holding SA4,229$486K0.0%-98.8%0.007%
4/16/2026SG Americas Securities LLC24,713$2.84M0.0%+105.2%0.042%
2/19/2026T. Rowe Price Investment Management Inc.10,560,425$688.54M0.4%+66.2%18.264%
2/19/2026Invesco Ltd.40,372$2.63M0.0%+19.9%0.070%
First Look: Elon’s “Starphone” (Ad)

Rumors are swirling that Elon Musk is developing a new mobile device that could rival the iPhone. It's said to be thinner, longer-lasting on battery, and cheaper to produce, with the ability to work worldwide without relying on cell towers. Former Bloomberg reporter and SAC Capital trader Josh Baylin says the evidence is mounting. He notes the FCC recently gave Musk a green light connected to his mobile plans, adding fuel to speculation. Baylin previously called the smartphone boom in 2004 and predicted Apple would sell a billion phones when others expected a fraction of that.tc pixel

See the full evidence behind Elon Musk's rumored new device.
2/18/2026Mercer Global Advisors Inc. ADV4,107$268K0.0%+19.0%0.007%
2/18/2026XTX Topco Ltd72,583$4.73M0.1%N/A0.126%
2/18/2026Vestal Point Capital LP2,925,000$190.71M6.5%+134.0%5.059%
2/18/2026Virtus Investment Advisers LLC3,701$241K0.1%+116.3%0.006%
2/18/2026Wellington Management Group LLP214,776$14.00M0.0%-7.5%0.371%
2/18/2026Tudor Investment Corp ET AL46,029$3.00M0.0%N/A0.080%
2/18/2026Twinbeech Capital LP6,949$453K0.0%N/A0.012%
2/18/2026Perceptive Advisors LLC1,466,071$95.59M1.7%-40.6%2.536%
2/18/2026Millennium Management LLC8,821$575K0.0%-78.1%0.015%
2/18/2026Man Group plc3,322$217K0.0%N/A0.006%
2/18/2026Janus Henderson Group PLC919,578$59.96M0.0%-9.3%1.590%
2/18/2026Catalio Capital Management LP156,109$10.18M1.9%N/A0.270%
2/18/2026Clough Capital Partners L P129,780$8.46M0.8%N/A0.224%
2/18/2026Bamco Inc. NY609,697$39.75M0.1%+10.8%1.054%
2/17/2026Guggenheim Capital LLC8,538$557K0.0%+4.5%0.015%
2/17/2026Logos Global Management LP115,000$7.50M0.5%-30.3%0.199%
2/17/2026Samsara Biocapital LLC60,873$3.97M0.4%-25.0%0.105%
2/17/2026Schonfeld Strategic Advisors LLC99,131$6.46M0.0%-80.2%0.171%
2/17/2026AQR Capital Management LLC7,960$519K0.0%-74.9%0.014%
2/17/2026RA Capital Management L.P.1,267,156$82.62M0.8%-58.3%2.191%
2/17/2026Paradigm Biocapital Advisors LP5,724,016$373.21M9.5%+23.1%9.899%
2/17/2026Trexquant Investment LP14,915$972K0.0%N/A0.026%
2/17/2026Price T Rowe Associates Inc. MD1,610,801$105.03M0.0%+27.4%2.786%
2/17/2026T. Rowe Price Investment Management Inc.5,653,523$368.61M0.4%-11.0%9.777%
2/17/2026Rock Springs Capital Management LP169,859$11.08M0.6%-5.1%0.294%
2/17/2026Integral Health Asset Management LLC200,000$13.04M0.6%+33.3%0.346%
2/17/2026California State Teachers Retirement System27,115$1.77M0.0%-9.9%0.047%
2/17/2026Russell Investments Group Ltd.130,520$8.51M0.0%-9.1%0.226%
2/17/2026State of Wisconsin Investment Board20,918$1.36M0.0%-5.9%0.036%
2/17/2026ExodusPoint Capital Management LP217,424$14.18M0.1%+2,201.8%0.376%
2/17/2026Royal Bank of Canada1,010$66K0.0%-98.4%0.002%
2/16/2026Squarepoint Ops LLC49,875$3.25M0.0%N/A0.086%
2/16/2026Mariner LLC3,113$206K0.0%-57.4%0.005%
2/16/2026Barclays PLC196,772$12.83M0.0%+82.8%0.340%
2/13/2026Marshall Wace LLP8,442$550K0.0%N/A0.015%
2/13/2026The Manufacturers Life Insurance Company 57,251$3.67M0.0%+6.3%0.099%
2/13/2026Affinity Asset Advisors LLC523,725$34.15M1.9%+4.7%0.906%
2/13/2026Hudson Bay Capital Management LP400,942$26.14M0.1%N/A0.693%
2/13/2026Rafferty Asset Management LLC69,515$4.53M0.0%+41.2%0.120%
2/13/2026First Trust Advisors LP20,896$1.36M0.0%N/A0.036%
2/13/2026Headlands Technologies LLC7,320$477K0.0%N/A0.013%
2/13/2026Charles Schwab Investment Management Inc.339,813$22.16M0.0%+2.8%0.588%
2/13/2026Police & Firemen s Retirement System of New Jersey9,074$592K0.0%-5.9%0.016%
2/13/2026State Street Corp1,998,503$130.30M0.0%+31.0%3.456%
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC161,035$10.50M0.0%-4.5%0.279%
2/13/2026Wells Fargo & Company MN54,260$3.54M0.0%+57.6%0.094%
2/13/2026Lord Abbett & CO. LLC449,634$29.32M0.1%+6.0%0.778%
2/13/2026Rhenman & Partners Asset Management AB133,500$8.70M0.8%+104.6%0.231%
2/12/2026Advisors Asset Management Inc.4,670$304K0.0%-42.2%0.008%
2/12/2026MetLife Investment Management LLC19,344$1.26M0.0%-3.4%0.033%
First Look: Elon’s “Starphone” (Ad)

Rumors are swirling that Elon Musk is developing a new mobile device that could rival the iPhone. It's said to be thinner, longer-lasting on battery, and cheaper to produce, with the ability to work worldwide without relying on cell towers. Former Bloomberg reporter and SAC Capital trader Josh Baylin says the evidence is mounting. He notes the FCC recently gave Musk a green light connected to his mobile plans, adding fuel to speculation. Baylin previously called the smartphone boom in 2004 and predicted Apple would sell a billion phones when others expected a fraction of that.tc pixel

See the full evidence behind Elon Musk's rumored new device.
2/12/2026Dimensional Fund Advisors LP8,903$580K0.0%-89.3%0.015%
2/12/2026Jasper Ridge Partners L.P.13,947$909K0.0%-7.7%0.024%
2/12/2026New York State Common Retirement Fund11,623$758K0.0%-42.9%0.020%
2/12/2026Swiss National Bank54,700$3.57M0.0%+2.4%0.095%
2/12/2026Nuveen LLC81,944$5.34M0.0%-1.8%0.142%
2/11/2026Deutsche Bank AG233,592$15.23M0.0%-41.5%0.404%
2/11/2026Marks Group Wealth Management Inc4,524$295K0.0%N/A0.008%
2/11/2026LPL Financial LLC9,622$627K0.0%-4.0%0.017%
2/11/2026Franklin Resources Inc.10,131$661K0.0%-24.0%0.018%
2/10/2026TD Asset Management Inc300,856$19.62M0.0%+29.3%0.520%


ACLX Institutional Ownership - Frequently Asked Questions

During the previous two years, 242 institutional investors and hedge funds held shares of Arcellx. The most heavily invested institutionals were T. Rowe Price Investment Management Inc. ($688.54M), FMR LLC ($610.19M), Gilead Sciences Inc. ($515.42M), Paradigm Biocapital Advisors LP ($373.21M), Vanguard Group Inc. ($266.12M), Vestal Point Capital LP ($190.71M), and State Street Corp ($130.30M).Learn more on Arcellx's institutional investors.

96.03% of Arcellx's stock is owned by institutional investors. Learn more on ACLX's institutional investor holdings.

Of the 202 institutional investors that purchased Arcellx's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Gilead Sciences Inc. ($6.72M), T. Rowe Price Investment Management Inc. ($5.17M), Vestal Point Capital LP ($3.95M), Vanguard Group Inc. ($1.70M), FMR LLC ($1.48M), RA Capital Management L.P. ($1.43M), and Paradigm Biocapital Advisors LP ($1.20M).

Institutional investors have bought a total of 12,335,236 shares in the last 24 months. This purchase volume represents approximately $879.41M in transactions.

Of the 73 institutional investors that sold Arcellx's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: RA Capital Management L.P. ($1.77M), Vestal Point Capital LP ($1.50M), Perceptive Advisors LLC ($1.00M), Janus Henderson Group PLC ($923.64K), AJU IB Investment Co. Ltd. ($824.07K), T. Rowe Price Investment Management Inc. ($698.83K), and Pictet Asset Management Holding SA ($416.58K).

Institutional investors have sold a total of 9,291,375 shares in the last 24 months. This volume of shares sold represents approximately $717.91M in transactions.


Related Companies

Institutional ownership data for NASDAQ:ACLX is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 6/16/2026. New 13F filings are added each quarter as they're published.
From Our Partners
Elon Warns "America Will Go Bankrupt". Trump's Plan Inside.
National debt just crossed 40 trillion dollars, and Elon Musk says America is 1,000% going to go bankrupt with...
American Hartford Gold | Sponsoredtc pixel
The investigation Porter spent tens of thousands to document
Porter Stansberry flew the Porter and Co. team 3,300 miles to Dublin to investigate a 17-year investing experi...
Porter & Company | Sponsoredtc pixel
A new kind of civil war is coming after election day?
Across America, AI-driven backlash is fueling protests, lawsuits, and moratoria that could reshape the politic...
Stansberry Research | Sponsoredtc pixel
How Elon’s Empire Ends (and how to profit)
Marc Chaikin, the 60 year Wall Street veteran whose Chaikin Money Flow indicator sits on every Bloomberg termi...
Chaikin Analytics | Sponsoredtc pixel
How options let you do more with less capital
Would you rather spend $5,000 buying 100 shares of a $50 stock, or control those same 100 shares for a fractio...
Base Camp Trading | Sponsoredtc pixel
My next big call (under $1)
Crypto traders have a name for this month... Uptober. Since 2013, Bitcoin has closed October higher in 10 of 1...
Crypto 101 Media | Sponsoredtc pixel
Major Buy Alert Issued for October 31st
Keith Kaplan has invested $17 million into his own AI research tools, building a platform now used by 180,000 ...
TradeSmith | Sponsoredtc pixel
Your book attached
Bill Poulos is giving away his 'Safe Trade Options Formula' book for free - but only for a limited time throug...
Profits Run | Sponsoredtc pixel