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MILLENNIUM MANAGEMENT LLC

Position in ACLX — Arcellx, Inc.

CIK 1273087 NEW YORK, NY

Position in ACLX

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$57,736,777
+$57,161,648 QoQ
Shares Held
502,846
+5600.6% QoQ
Ownership
0.860%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2022
16 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ACLX Over Time

Shares Held

Position Value (USD)

Derivatives in ACLX

reported options exposure · as of Mar 31, 2025
CallValue
$675,680
CallShares
10,300
PutValue
$0
PutShares
0

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Biotechnology

Healthcare · as of Mar 31, 2026

MILLENNIUM MANAGEMENT LLC holds $4,570,822,033 across 342 Biotechnology names. ACLX ranks #13 (1.3% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ACLX

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18 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $57,736,777 502,846
2025-12-31 $575,129 8,821
2025-09-30 $3,311,996 40,341
2025-06-30 $6,226,907 94,562
2025-03-31 $675,680 10,300
2025-03-31 $3,349,273 51,056
2024-12-31 $1,715,555 22,370
2024-09-30 $835,100 10,000
2024-03-31 $4,257,155 61,210
2023-12-31 $3,184,257 57,374
2023-09-30 $358,800 10,000
2023-09-30 $1,842,976 51,365
2023-06-30 $7,656,308 242,135
2023-03-31 $3,721,786 120,798
2022-12-31 $2,177,181 70,277
2022-09-30 $398,637 21,238
2022-06-30 $1,545,858 85,501
2022-03-31 $1,278,834 91,215