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Compare · PFE vs SION

PFE vs SION

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

Summary

  • Both PFE and SION operate in Biotechnology: Pharmaceutical Preparations (Health Care), so they compete in similar markets.
  • PFE is the larger of the two at $153.59B, about 89.6x SION ($1.71B).
  • Over the past year, PFE is up 17.1% and SION is up 212.3% - SION leads by 195.1 points.
  • PFE has been more active in the news (10 items in the past 4 weeks vs 6 for SION).
  • PFE has more recent analyst coverage (25 ratings vs 8 for SION).
PerformancePFE+17.13%SION+212.25%
2025-04-28+0.00%2026-04-24
MetricPFESION
Company
Pfizer Inc.
Sionna Therapeutics Inc.
Price
$26.98+1.20%
$37.97-1.07%
Market cap
$153.59B
$1.71B
1M return
-1.21%
+2.48%
1Y return
+17.13%
+212.25%
Industry
Biotechnology: Pharmaceutical Preparations
Biotechnology: Pharmaceutical Preparations
Exchange
NYSE
NASDAQ
IPO
2025
News (4w)
10
6
Recent ratings
25
8
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.