DJ Regeneron Pharmaceuticals Inc. Stock Underperforms Thursday When Compared To Competitors Despite Daily Gains

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Shares of Regeneron Pharmaceuticals Inc. $(REGN)$ advanced 1.67% to $819.09 Thursday, on what proved to be an all-around mixed trading session for the stock market, with the Dow Jones Industrial Average rising 0.02% to 52,867.98 and the S&P 500 Index falling 1.21% to 7,663.43.

Regeneron Pharmaceuticals Inc. closed 4.68% short of its 52-week high of $859.34, which the company achieved on September 3rd.

The stock demonstrated a mixed performance when compared to some of its competitors Thursday, as Amgen Inc. $(AMGN)$ rose 2.04% to $447.28, Moderna Inc. (MRNA) fell 17.57% to $202.63, and Gilead Sciences Inc. (GILD) rose 2.36% to $157.19.

Trading volume (851,857) eclipsed its 50-day average volume of 685,752.

Data source: Dow Jones Market Data, FactSet. Data compiled October 22, 2026.