Biggest Stock Losers Today (December 5, 2025): Parsons, Adaptive Biotechnologies, SentinelOne, SoFi and More Slide Despite Calm Markets
The S&P 500 closed at 6,870.40, up 0.19% Friday, while Bitcoin fell 3% to just under $89,300. Parsons plunged 21% after losing a key FAA contract; other steep U.S. decliners included Adaptive Biotechnologies, SentinelOne, and several Brazilian financials. Brazil’s Bovespa index dropped 4% after Jair Bolsonaro endorsed his son for president, sending the real down 3%.
