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Compare · ACLX vs BIIB

ACLX vs BIIB

Side-by-side comparison of Arcellx Inc. (ACLX) and Biogen Inc. (BIIB): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both ACLX and BIIB operate in Biotechnology: Biological Products (No Diagnostic Substances) (Health Care), so they compete in similar markets.
  • BIIB is the larger of the two at $28.44B, about 4.2x ACLX ($6.73B).
  • Over the past year, ACLX is up 72.0% and BIIB is up 43.6% - ACLX leads by 28.4 points.
  • BIIB has hit the wire 9 times in the past 4 weeks while ACLX has been quiet.
  • BIIB has more recent analyst coverage (25 ratings vs 24 for ACLX).
PerformanceACLX+72.01%BIIB+50.70%
2025-06-09+0.00%2026-04-27
MetricACLXBIIB
Company
Arcellx Inc.
Biogen Inc.
Price
$115.05+0.02%
$192.65-1.36%
Market cap
$6.73B
$28.44B
1M return
+0.38%
+0.68%
1Y return
+72.01%
+43.59%
Industry
Biotechnology: Biological Products (No Diagnostic Substances)
Biotechnology: Biological Products (No Diagnostic Substances)
Exchange
NASDAQ
NASDAQ
IPO
2022
News (4w)
0
9
Recent ratings
24
25
ACLX

Arcellx Inc.

Arcellx, Inc., a clinical-stage biotechnology company, engages in the development of various immunotherapies for patients with cancer and other incurable diseases. The company's lead ddCAR product candidate is CART-ddBCMA, which is in phase 1 clinical trial for the treatment of patients with relapsed or refractory (r/r) multiple myeloma (MM). It is also developing ACLX-001, an immunotherapeutic combination composed of ARC-T cells and bi-valent SparX proteins targeting BCMA to treat r/r MM; ACLX-002 and ACLX-003 for treating r/r acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS); and other AML/MDS product candidates, as well as solid tumor programs. The company was formerly known as Encarta Therapeutics, Inc. and changed its name to Arcellx, Inc. in January 2016. Arcellx, Inc. was incorporated in 2014 and is headquartered in Gaithersburg, Maryland.

BIIB

Biogen Inc.

Biogen Inc. discovers, develops, manufactures, and delivers therapies for treating neurological and neurodegenerative diseases. The company offers TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, TYSABRI, and FAMPYRA for multiple sclerosis (MS); SPINRAZA for spinal muscular atrophy; and FUMADERM to treat plaque psoriasis. It also provides BENEPALI, an etanercept biosimilar referencing ENBREL; IMRALDI, an adalimumab biosimilar referencing HUMIRA; and FLIXABI, an infliximab biosimilar referencing REMICADE. In addition, the company offers RITUXAN for treating non-Hodgkin's lymphoma, chronic lymphocytic leukemia (CLL), rheumatoid arthritis, two forms of ANCA-associated vasculitis, and pemphigus vulgaris; RITUXAN HYCELA for non-Hodgkin's lymphoma and CLL; GAZYVA to treat CLL and follicular lymphoma; and OCREVUS for treating relapsing MS and primary progressive MS; and other anti-CD20 therapies. Further, it develops BIIB061, BIIB091, and BIIB107 for MS and neuroimmunology; Aducanumab, BAN2401, BIIB092, BIIB076, and BIIB080 to treat Alzheimer's disease and dementia; BIIB067, BIIB078, BIIB105, BIIB100, and BIIB110 to treat neuromuscular disorders; BIIB124, BIIB094, BIIB118, BIIB101, and BIIB122 for treating Parkinson's disease and movement disorders; BIIB111 and BIIB112 to treat ophthalmology related diseases; BIIB125 and BIIB104 for treating neuropsychiatry; Dapirolizumab pegol and BIIB059 to treat immunology related diseases; BIIB093 and TMS-007 to treat acute neurology; BIIB074 and BIIB095 for neuropathic pain; and SB11 and SB15 biosimilars, which are under various stages of development. The company has collaboration and license agreements with Acorda Therapeutics, Inc.; Alkermes Pharma Ireland Limited; Bristol-Myers Squibb Company; Eisai Co., Ltd.; Genentech, Inc.; Neurimmune SubOne AG; Ionis Pharmaceuticals, Inc.; Ginkgo Bioworks; Capsigen Inc.; and Mirimus, Inc. Biogen Inc. was founded in 1978 and is headquartered in Cambridge, Massachusetts.

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