William Blair initiates coverage on Climb Bio stock with Outperform rating

Published 16/10/2025, 11:52
William Blair initiates coverage on Climb Bio stock with Outperform rating

Investing.com - William Blair initiated coverage on Climb Bio (NASDAQ:CLYM) with an Outperform rating, citing the potential of the company’s CD19 antibody, budoprutug, which is being developed for various autoimmune indications. According to InvestingPro data, CLYM maintains a strong financial position with more cash than debt, though the company is rapidly burning through its reserves - a common characteristic of early-stage biotech firms.

The firm highlighted budoprutug’s demonstrated proof-of-concept data in primary membranous nephropathy (pMN), which it described as an indication with blockbuster potential. William Blair also noted external proof-of-concept data supporting B-cell depletion in systemic lupus erythematosus and immune thrombocytopenia, which de-risks the development of budoprutug in these indications.

William Blair estimated combined peak sales of $1.9 billion across these three indications and calculated a risk-adjusted net present value for Climb Bio of $812 million, or $11.78 per share. The firm indicated that strong proof of concept has been achieved in at least 15 different autoimmune indications, suggesting a larger long-term opportunity beyond the three currently being evaluated. InvestingPro analysis shows analyst targets ranging from $8 to $10 per share, with the stock currently trading at $1.94, suggesting significant upside potential despite its recent 54% surge over the past six months.

The research note also mentioned Climb Bio’s novel APRIL antibody, CLYM116, which features sweeping functionality and Fc engineering to reduce target-mediated drug disposition and increase half-life. These characteristics could potentially differentiate it from competitors in the IgA nephropathy treatment landscape.

William Blair expects initial results for CLYM116 in 2026, which would provide important proof-of-concept data that could translate to registrational studies. Investors following this development should note that CLYM’s next earnings report is scheduled for November 18, 2025, which could provide important updates on the company’s development pipeline and cash position. Get more detailed financial insights and 8 additional ProTips by subscribing to InvestingPro.

In other recent news, Climb Bio has been the subject of several analyst reviews and corporate developments. The company recently announced the appointment of Susan Altschuller as its new Chief Financial Officer. Dr. Altschuller brings over 20 years of financial leadership experience and previously held CFO positions at Cerevel Therapeutics and ImmunoGen. In analyst updates, H.C. Wainwright initiated coverage on Climb Bio with a Buy rating and a $9 price target, describing the company as a "disruptive innovator" in therapies for autoimmune diseases. Additionally, Oppenheimer reaffirmed its Outperform rating and a $10 price target based on promising data from Climb Bio’s non-human primate studies on their anti-APRIL sweeper antibody, CLYM116. BTIG also raised its price target for Climb Bio from $7 to $8, maintaining a Buy rating, citing the potential best-in-class features of CLYM116 for treating IgA nephropathy. These developments reflect growing confidence in Climb Bio’s research and leadership capabilities.

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