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Compare · AMPH vs PFE

AMPH vs PFE

Side-by-side comparison of Amphastar Pharmaceuticals Inc. (AMPH) and Pfizer Inc. (PFE): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both AMPH and PFE operate in Biotechnology: Pharmaceutical Preparations (Health Care), so they compete in similar markets.
  • PFE is the larger of the two at $304.95B, about 244.6x AMPH ($1.25B).
  • Over the past year, AMPH is down 12.1% and PFE is up 17.1% - PFE leads by 29.2 points.
  • PFE has been more active in the news (10 items in the past 4 weeks vs 4 for AMPH).
  • PFE has more recent analyst coverage (25 ratings vs 13 for AMPH).
PerformanceAMPH-12.10%PFE+17.13%
2025-04-28+0.00%2026-04-24
MetricAMPHPFE
Company
Amphastar Pharmaceuticals Inc.
Pfizer Inc.
Price
$21.44+2.05%
$26.98+1.20%
Market cap
$1.25B
$304.95B
1M return
+9.61%
-1.21%
1Y return
-12.10%
+17.13%
Industry
Biotechnology: Pharmaceutical Preparations
Biotechnology: Pharmaceutical Preparations
Exchange
NASDAQ
NYSE
IPO
2014
News (4w)
4
10
Recent ratings
13
25
AMPH

Amphastar Pharmaceuticals Inc.

Amphastar Pharmaceuticals, Inc., a specialty pharmaceutical company, develops, manufactures, markets, and sells generic and proprietary injectable, inhalation, and intranasal products in the United States, China, and France. The company operates through two segments, Finished Pharmaceutical Products and API. It offers Primatene Mist, an over-the-counter epinephrine inhalation product for the temporary relief of mild symptoms of intermittent asthma; Enoxaparin, a low molecular weight heparin to prevent and treat deep vein thrombosis; Naloxone for opioid overdose; Glucagon for injection emergency kit; and Cortrosyn, a lyophilized powder for use as a diagnostic agent in the screening of patients with adrenocortical insufficiency. The company also provides Amphadase, a bovine-sourced hyaluronidase injection to absorb and disperse other injected drugs; Epinephrine injection for the emergency treatment of allergic reactions; lidocaine jelly, an anesthetic product for urological procedures; lidocaine topical solution for various procedures; phytonadione injection, a vitamin K1 injection for newborn babies; emergency syringe products for emergency use in hospital settings; morphine injection for use with patient controlled analgesia pumps; and lorazepam injection for surgery and medical procedures. In addition, it offers procainamide for documented ventricular arrhythmias; neostigmine methylsulfate injection to treat myasthenia gravis and to reverse the effects of muscle relaxants; medroxyprogesterone acetate injectable suspension for the prevention of pregnancy; and Isoproterenol hydrochloride injection for mild or transient episodes of heart block, as well as manufactures and distributes recombinant human insulin active pharmaceutical ingredients (API) and porcine insulin API. It serves hospitals, care facilities, alternate care sites, clinics, and doctors' offices. The company was founded in 1996 and is headquartered in Rancho Cucamonga, California.

PFE

Pfizer Inc.

Pfizer Inc. discovers, develops, manufactures, markets, distributes, and sells biopharmaceutical products worldwide. It offers medicines and vaccines in various therapeutic areas, including cardiovascular metabolic and pain under the Eliquis, Chantix/Champix, and Premarin family brands; biologics, small molecules, immunotherapies, and biosimilars under the Ibrance, Xtandi, Sutent, Inlyta, Retacrit, Lorbrena, and Braftovi brands; and sterile injectable and anti-infective medicines under the Sulperazon, Medrol, Zithromax, Vfend, and Panzyga brands. The company also provides medicines and vaccines in various therapeutic areas, such as pneumococcal disease, meningococcal disease, tick-borne encephalitis, and COVID-19 under the Prevnar 13/Prevenar 13 (pediatric/adult), Nimenrix, FSME/IMMUN-TicoVac, Trumenba, and the Pfizer-BioNTech COVID-19 vaccine brands; biosimilars for chronic immune and inflammatory diseases under the Xeljanz, Enbrel, Inflectra, and Eucrisa/Staquis brands; and amyloidosis, hemophilia, and endocrine diseases under the Vyndaqel/Vyndamax, BeneFIX, and Genotropin brands. In addition, the company is involved in the contract manufacturing business. It serves wholesalers, retailers, hospitals, clinics, government agencies, pharmacies, and individual provider offices, as well as disease control and prevention centers. The company has collaboration agreements with Bristol-Myers Squibb Company; Astellas Pharma US, Inc.; Myovant Sciences Ltd.; Akcea Therapeutics, Inc; Merck KGaA; Valneva SE; BioNTech SE; and Syapse, Inc. Pfizer Inc. was founded in 1849 and is headquartered in New York, New York.

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