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Compare · AMGN vs RGEN

AMGN vs RGEN

Side-by-side comparison of Amgen Inc. (AMGN) and Repligen Corporation (RGEN): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both AMGN and RGEN operate in Biotechnology: Biological Products (No Diagnostic Substances) (Health Care), so they compete in similar markets.
  • AMGN is the larger of the two at $178.00B, about 26.9x RGEN ($6.61B).
  • Over the past year, AMGN is up 17.3% and RGEN is down 17.2% - AMGN leads by 34.5 points.
  • AMGN has been more active in the news (12 items in the past 4 weeks vs 6 for RGEN).
  • Both have 25 recent analyst ratings on file.
PerformanceAMGN+17.27%RGEN-17.20%
2025-05-02+0.00%2026-05-01
MetricAMGNRGEN
Company
Amgen Inc.
Repligen Corporation
Price
$329.80-4.74%
$117.26-0.91%
Market cap
$178.00B
$6.61B
1M return
-6.61%
-0.91%
1Y return
+17.27%
-17.20%
Industry
Biotechnology: Biological Products (No Diagnostic Substances)
Biotechnology: Biological Products (No Diagnostic Substances)
Exchange
NASDAQ
NASDAQ
IPO
1983
1986
News (4w)
12
6
Recent ratings
25
25
AMGN

Amgen Inc.

Amgen Inc. discovers, develops, manufactures, and delivers human therapeutics worldwide. It focuses on inflammation, oncology/hematology, bone health, cardiovascular disease, nephrology, and neuroscience areas. The company's products include Enbrel to treat plaque psoriasis, rheumatoid arthritis, and psoriatic arthritis; Neulasta that reduces the chance of infection due a low white blood cell count in patients cancer; Prolia to treat postmenopausal women with osteoporosis; Xgeva for skeletal-related events prevention; Otezla for the treatment of adult patients with plaque psoriasis, psoriatic arthritis, and oral ulcers associated with Behçet's disease; Aranesp to treat a lower-than-normal number of red blood cells and anemia; KYPROLIS to treat patients with relapsed or refractory multiple myeloma; and Repatha, which reduces the risks of myocardial infarction, stroke, and coronary revascularization. It also markets Nplate, Vectibix, MVASI, Parsabiv, EPOGEN, KANJINTI, BLINCYTO, Aimovig, EVENITY, AMGEVITATM, Sensipar/Mimpara, NEUPOGEN, IMLYGIC, Corlanor, and AVSOLA. Amgen Inc. serves healthcare providers, including physicians or their clinics, dialysis centers, hospitals, and pharmacies. It distributes its products through pharmaceutical wholesale distributors, as well as direct-to-consumer channels. The company has collaboration agreements with Novartis Pharma AG; UCB; Bayer HealthCare LLC; BeiGene, Ltd.; Eli Lilly and Company; Datos Health; and Verastem, Inc. to evaluate VS-6766 in combination with lumakrastm (Sotorasib) in patients with KRAS G12C-mutant non-small cell lung cancer. It has an agreement with Kyowa Kirin Co., Ltd. to jointly develop and commercialize KHK4083, a Phase 3-ready anti-OX40 fully human monoclonal antibody for the treatment of atopic dermatitis and other autoimmune diseases; and a strategic research and development collaboration with Neumora Therapeutics, Inc. Amgen Inc. was founded in 1980 and is headquartered in Thousand Oaks, California.

RGEN

Repligen Corporation

Repligen Corporation develops and commercializes bioprocessing technologies and systems for use in biological drug manufacturing process in North America, Europe, the Asia Pacific, and internationally. It offers Protein A ligands that are the binding components of Protein A affinity chromatography resins; and cell culture growth factor products. The company's chromatography products include OPUS pre-packed chromatography columns, which are used in the purification of biologics; and OPUS smaller-scale columns that are used in the high throughput process development screening, viral clearance validation studies, and scale down validation of chromatography processes. It also offers ELISA test kits; and chromatography resins under the CaptivA brand. In addition, the company offers filtration products, such as XCell Alternating Tangential Flow systems that are filtration devices used in upstream perfusion and cell culture processing; TangenX flat sheet cassettes, which are used in downstream biologic drug concentration and formulation processes; KrosFlo tangential flow filtration and tangential flow depth filtration systems; Spectra/Por laboratory and process dialysis products, and SpectraFlo dynamic dialysis systems; and ProConnex single-use hollow fiber. Further, it provides process analytics products, such as slope spectroscopy systems under the SoloVPE and FlowVPE brands. The company sells its products to life sciences, biopharmaceutical, and diagnostics companies; laboratory researchers; and contract manufacturing organizations. Repligen Corporation has collaboration agreements with Navigo Proteins GmbH to develop multiple affinity ligands; and Sartorius Stedim Biotech to create novel perfusion-enabled bioreactors. Repligen Corporation was incorporated in 1981 and is headquartered in Waltham, Massachusetts.