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ACLX

Arcellx
ACLX

Delisted

ACLX was delisted on the 27th of April, 2026.

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197 hedge funds and large institutions have $4.04B invested in Arcellx in 2025 Q1 according to their latest regulatory filings, with 24 funds opening new positions, 74 increasing their positions, 69 reducing their positions, and 38 closing their positions.

New
Increased
Maintained
Reduced
Closed

165% more call options, than puts

Call options by funds: $51.8M | Put options by funds: $19.6M

17% more funds holding in top 10

Funds holding in top 10: 12 → 14 (+2)

2.67% more ownership

Funds ownership: 109.42% → 112.09% (+2.7%)

7% more repeat investments, than reductions

Existing positions increased: 74 | Existing positions reduced: 69

7% less funds holding

Funds holding: 211 → 197 (-14)

11% less capital invested

Capital invested by funds: $4.54B → $4.04B (-$495M)

37% less first-time investments, than exits

New positions opened: 24 | Existing positions closed: 38

Holders
197
Holders Change
-14
Holders Change %
-6.64%
% of All Funds
2.64%
Holding in Top 10
14
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+16.67%
% of All Funds
0.19%
New
24
Increased
74
Reduced
69
Closed
38
Calls
$51.8M
Puts
$19.6M
Net Calls
+$32.2M
Net Calls Change
+$29.7M

Top Buyers

Rank Fund Capital Flow
1
VPC
Vestal Point Capital
New York
+$130M
2
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
+$65M
3
Citadel Advisors
Citadel Advisors
Florida
+$47.5M
4
Vanguard Group
Vanguard Group
Pennsylvania
+$44.4M
5
JP Morgan Chase
JP Morgan Chase
New York
+$31.1M

Top Sellers

Rank Fund Capital Flow
1
Fidelity Investments
Fidelity Investments
Massachusetts
-$112M
2
PA
Perceptive Advisors
New York
-$37.4M
3
Lord, Abbett & Co
Lord, Abbett & Co
New Jersey
-$21M
4
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$19.1M
5
CAM
Cormorant Asset Management
Massachusetts
-$16.9M
Name Holding Trade Value Shares
Change 		Change in
Stake
DFCM
51
Dark Forest Capital Management
Puerto Rico
$4.66M +$3.73M +55,003 +342%
CS
52
Candriam SCA
Luxembourg
$4.63M -$8.43M -124,458 -64%
Renaissance Technologies
53
Renaissance Technologies
New York
$4.46M +$1.28M +18,900 +38%
PC
54
Pier Capital
Connecticut
$4.46M +$4.6M +67,976 New
PHP
55
Parkman Healthcare Partners
Connecticut
$4.42M +$1.55M +22,898 +51%
First Trust Advisors
56
First Trust Advisors
Illinois
$4.41M -$4.54M -66,996 -50%
CM
57
Caption Management
Oklahoma
$4.4M +$4.54M +67,069 New
RhumbLine Advisers
58
RhumbLine Advisers
Massachusetts
$4.18M +$261K +3,848 +6%
Swiss National Bank
59
Swiss National Bank
Switzerland
$4.13M -$33.9K -500 -0.8%
Susquehanna International Group
60
Susquehanna International Group
Pennsylvania
$4.04M +$1.29M +19,083 +45%
Rafferty Asset Management
61
Rafferty Asset Management
New York
$3.84M -$849K -12,530 -18%
Ameriprise
62
Ameriprise
Minnesota
$3.64M +$3.07M +45,266 +445%
American Century Companies
63
American Century Companies
Missouri
$3.56M +$1.69M +24,875 +84%
AllianceBernstein
64
AllianceBernstein
Tennessee
$3.36M +$3.05K +45 +0.1%
Millennium Management
65
Millennium Management
New York
$3.35M +$1.94M +28,686 +128%
DC
66
Decheng Capital
California
$3.28M -$2.33M -34,377 -41%
HS
67
HighVista Strategies
Massachusetts
$3.12M +$250K +3,692 +8%
Federated Hermes
68
Federated Hermes
Pennsylvania
$3.03M -$7.44M -109,870 -70%
EDRH
69
Edmond de Rothschild Holding
Switzerland
$2.98M – – –
RAM
70
Readystate Asset Management
Illinois
$2.96M +$3.05M +45,058 New
GPP
71
Great Point Partners
Connecticut
$2.95M +$3.05M +45,000 New
BNP Paribas Financial Markets
72
BNP Paribas Financial Markets
France
$2.91M +$1.65M +24,389 +122%
HP
73
HealthInvest Partners
Sweden
$2.9M +$142K +2,100 +5%
AI
74
Allostery Investments
Connecticut
$2.89M +$610K +9,000 +26%
RPAM
75
Rhenman & Partners Asset Management
Sweden
$2.85M – – –
1 2
3
4 5

ACLX Hedge Fund Activity: Q1 2025 in Review

197 of the 7,459 institutional investors tracked by Wall St. Rank reported a position in Arcellx (ACLX) for Q1 2025, worth a combined $4.04B — down 11% from $4.54B a quarter earlier.

Sellers outnumbered buyers: 38 funds closed out of ACLX and 24 opened new positions — a net loss of 14 holders — while 69 trimmed existing stakes and 74 added.

The largest buyer was Vestal Point Capital, adding an estimated $130M. The largest seller was Fidelity Investments, cutting an estimated $112M.

  • 197 institutional investors held Arcellx (ACLX) as of Q1 2025, down from 211 in Q4 2024.
  • Funds reported $4.04B of Arcellx stock for Q1 2025, down 11% quarter-over-quarter.
  • 24 funds opened new Arcellx positions in Q1 2025 and 38 closed out, a net change of -14 holders.
  • The largest Arcellx buyer in Q1 2025 was Vestal Point Capital, an estimated $130M added.
  • The largest Arcellx seller in Q1 2025 was Fidelity Investments, an estimated $112M sold.

Based on aggregated 13F filings for Q1 2025.