We recently compiled a list of 9 Most Undervalued Pharma Stocks to Buy Right Now. Sanofi is among the most undervalued stocks.  Between December 8 and December 10, 2025, SNY faced a series of analyst rating adjustments that tempered investor sentiment. The Fly reported on Monday, December 8, 2025, that J.P. Morgan downgraded SNY from Overweight to Neutral, signaling a more cautious near-term outlook for the company. The following day, Guggenheim lowered its rating from Buy to Neutral, marking a second do ...