This article was automatically generated by MarketWatch using technology from Automated Insights.
Shares of Biogen Inc. (BIIB) shed 2.84% to $172.50 Thursday, on what proved to be an all-around favorable trading session for the stock market, with the S&amp;P 500 Index  rising 0.21% to 6,901.00 and the Dow Jones Industrial Average  rising 1.34% to 48,704.01.
Biogen Inc. closed 6.84% below its 52-week high of $185.17, which the company reached on November 24th.
The stock underperformed when compared to some of its competitors Thursday, as Johnson &amp; Johnson (JNJ) rose 1.68% to $210.01, Pfizer Inc. (PFE) rose 0.08% to $25.80, and AbbVie Inc. (ABBV) fell 0.53% to $223.98.
Trading volume (2.7 M) eclipsed its 50-day average volume of 1.8 M.
Data source: Dow Jones Market Data, FactSet. Data compiled December 11, 2025.
This content was created by MarketWatch, which is operated by Dow Jones &amp; Co. MarketWatch is published independently from Dow Jones Newswires and The Wall Street Journal.
(END) Dow Jones Newswires
12-11-25 1701ET

BIIB

<p>Biogen Inc. (BIIB) shares fell 2.84% to $172.50 on Thursday, underperforming compared to competitors Johnson & Johnson, Pfizer, and AbbVie. Despite a favorable trading session for the stock market, Biogen closed 6.84% below its 52-week high. Trading volume was 2.7 million, above the 50-day average of 1.8 million.</p>

Biogen Inc. Stock Underperforms Thursday When Compared To Competitors