This article was automatically generated by Dow Jones using technology from Automated Insights.
Shares of Regeneron Pharmaceuticals Inc. shed 9.8% to $629.68 on what proved to be an all-around mixed trading session for the stock market, with the Dow Jones Industrial Average rising 0.3% to 49,686.12 and the S&P 500 Index falling 0.1% to 7,403.05.
This was the stock's fourth consecutive day of losses.
Regeneron Pharmaceuticals Inc. closed 23.3% short of its 52-week high of $821.11, which the company reached on January 9th.
The stock underperformed when compared to some of its peers, as Amgen Inc. fell 0.6% to $324.39, Moderna Inc. fell 1.9% to $48.11, and Gilead Sciences Inc. rose 0.07% to $129.67.
Trading volume totaled 3.0 million, compared to the 50-day average of 691,323.
Data source: Dow Jones Market Data, FactSet
(END) Dow Jones Newswires
May 18, 2026 16:33 ET (20:33 GMT)
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