HBK INVESTMENTS L P

Position in ACLX — Arcellx, Inc.

CIK 1011443 DALLAS, TX

Position in ACLX

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$261,619,321

New position

Shares Held

2,278,517

first reported quarter

Ownership

3.90%

of shares outstanding

% of Portfolio

3.71%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2026

1 quarter on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Mar 31, 2026

HBK INVESTMENTS L P holds $686,968,479 across 4 Biotechnology names. ACLX ranks #1 (38.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ACLX	Arcellx, Inc. This page	2,278,517	$261,619,321
2	TERN	Terns Pharmaceuticals, Inc.	2,950,000	$155,524,000
3	APLS	Apellis Pharmaceuticals, Inc.	3,550,000	$142,816,500
4	FOLD	AMICUS THERAPEUTICS, INC.	8,783,448	$127,008,658

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$261,619,321	2,278,517	—	Shares	Sole	2026-05-15
No filing history on record for this holder in this stock.