The move helped Eli Lilly notch a fresh 52-week high Wednesday, the only stock in the S & P 500 to do so.
Bottom line Biogen's topline data appears to be encouraging, suggesting the Alzheimer's drug helped slowed cognitive decline.
Plus, we think Eli Lilly has more going for it overall than Biogen, making it a more attractive investment.
Drug background Like Biogen's Alzheimer's drug lecanemab, Lilly's donanemab is an antibody that tries to reduce buildup on the brain of the amyloid beta protein .
The Eli Lilly logo is shown on one of the company's offices in San Diego, California, September 17, 2020.