Constellation Energy tops S&P losers list on Amazon nuclear power deal setback
Constellation Energy ( NASDAQ: CEG) -10.1%, the biggest loser on the S&P 500, in early trading Monday after the Federal Energy Regulatory Commission on Friday rejected the amended PJM interconnection agreement for an Amazon ( AMZN) data center connected directly to rival Talen Energy's (NASDAQ: TLN) Susquehanna nuclear power plant in Pennsylvania.