Ultragenyx Pharmaceutical Inc. (RARE) Stock

Ultragenyx Pharmaceutical Inc. (RARE) is a Healthcare stock trading at $26.30 (as of 2026-08-21), with a market capitalization of $2.59B. Figures are sourced from first-party U.S. SEC EDGAR filings and market data.

Ultragenyx Pharmaceutical Inc., a biopharmaceutical company, focuses on the identification, acquisition, development, and commercialization of novel products for the treatment of rare and ultra-rare genetic diseases in North America, Europe, and internationally. Its biologic products include Crysvita (burosumab), an antibody targeting fibroblast growth factor 23 for the treatment of X-linked hypophosphatemia, as well as tumor-induced osteomalacia; Mepsevii, an enzyme replacement therapy for the treatment of children and adults with Mucopolysaccharidosis VII; Dojolvi for treating long-chain fatty acid oxidation disorders; and Evkeeza (evinacumab) for the treatment of homozygous familial hypercholesterolemia. The company's products candidatures include DTX401, an adeno-associated virus 8 (AAV8) gene therapy clinical candidate for the treatment of patients with glycogen storage disease type Ia; DTX301, an AAV8 gene therapy for the treatment of patients with ornithine transcarbamylase; UX143, a human monoclonal antibody for the treatment of osteogenesis imperfecta; GTX-102, an antisense oligonucleotide for the treatment of Angelman syndrome; UX701, for the treatment of Wilson disease; and UX053 for the treatment of glycogen storage disease type III. Ultragenyx Pharmaceutical Inc. has collaboration and license agreement with Kyowa Kirin Co., Ltd.; Saint Louis University; Baylor Research Institute; REGENXBIO Inc.; Bayer Healthcare LLC; GeneTx; Mereo; University of Pennsylvania; Arcturus Therapeutics Holdings Inc., Solid Biosciences Inc.; and Daiichi Sankyo Co., Ltd. Ultragenyx Pharmaceutical Inc. was incorporated in 2010 and is headquartered in Novato, California.

Understand Ultragenyx Pharmaceutical Inc.: how it makes money

Ultragenyx Pharmaceutical develops and commercializes therapies for rare and ultra-rare genetic diseases, such as Crysvita, and it makes money from the sales and royalties of its biologic medicines.

The companys profit model depends on how much revenue it generates from its commercial therapies and related royalties, while the latest quarter shows a deeply negative operating margin.

Revenue by segment (latest quarter)
Crysvita US/CA royalties$0.1B

Business quality (Mixed): Core strength is a portfolio of commercial rare-disease biologics, but the latest quarter indicates significant operating losses, so near-term performance is likely sensitive to product revenue levels.

Bull case

  • Commercial product base in rare diseases: The company commercializes biologic products including Crysvita (burosumab) and Mepsevii, supporting ongoing revenue generation from marketed therapies.
  • Pipeline execution signals: Phase 3 Orbit study and Phase 3 Cosmic study enrollment and site coverage are tracked, indicating continued development activity.

Bear case

  • Material operating losses: For the latest quarter, operating_margin_pct is -124.3, indicating costs and expenses substantially exceed operating results versus the reported revenue level.
  • Revenue concentration risk: The available segment and operating metric candidates suggest heavy contribution from specific products (for example Crysvita-related items and other named therapy revenues), which can increase downside if product revenue softens.
Valuation — source: SEC EDGAR (first-party)
Price$26.30
Market Cap$2.59B
Price / Sales3.62
FCF Yield-18.9%
Profitability & Growth — source: SEC EDGAR
Revenue (TTM)$673.00M
Net Margin-85.4%
Revenue Growth (YoY)28.5%
EPS Growth (YoY)-23.1%
FCF Growth (YoY)-11.5%
Financial Health — source: SEC EDGAR
Altman Z-Score-3.46 (distress)
Valuation vs Sector & Industry
Sector P/E (Healthcare)21.7
Industry P/E (Pharmaceutical Products)17.2
Smart-Money Activity — SEC Form 4 / 13F / Congressional disclosures
Top Institutional HolderVANGUARD GROUP INC ($236.07M)
Institutional Holders Tracked10
Congressional Trades (recent)4
Company
SectorHealthcare
IndustryPharmaceutical Products
CEOEmil D. Kakkis
Employees1,294
CountryUS
IPO Date2014-01-31

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RARE earnings history · RARE institutional & insider holders · RARE KPIs & operating metrics · RARE financials · RARE investor presentations & press releases · RARE SEC filings · RARE peers · Congress trades · Insider trades · Short interest · Stock screener

Data as of 2026-08-21.

Figures sourced from U.S. Securities and Exchange Commission (SEC EDGAR) filings and market data. Not personalized investment advice.