With shares of Rigel Pharmaceuticals (RIGL 3.84%) down more than 65% in the past 12 months, it's clearly been a difficult year for the drugmaker. Today's 13.5% drop came after it reported that its experimental asthma drug, called R343, failed to meet its primary endpoint in a mid-stage clinical trial. This disappointing news comes just a couple of months after the company reported lackluster results for its rheumatoid arthritis candidate fostamatib, which caused big pharma AstraZeneca to bail on their partnership. In the following video, health-care analysts David Williamson and Max Macaluso discuss these results and Rigel's current situation.
You're reading a free article with opinions that may differ from The Motley Fool's Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More
Why Rigel Investors Had a Dose of Disappointment Today
Shares of Rigel slid more than 13%. Where does this biotech stand today?
David Williamson owns shares of Pfizer. Max Macaluso, Ph.D., and The Motley Fool have no position in any of the stocks mentioned. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.
Stocks Mentioned



*Average returns of all recommendations since inception. Cost basis and return based on previous market day close.
Related Articles





Premium Investing Services
Invest better with The Motley Fool. Get stock recommendations, portfolio guidance, and more from The Motley Fool's premium services.