Constellation Energy stock, which has fluctuated wildly this year in the boom and bust of the AI hype cycle, briefly broke out Tuesday in response to news it signed a 20-year deal to sell power to Meta Platforms.

ToplineFacebook parent Meta announced an unprecedented deal with Constellation Energy, the largest American nuclear power plant operator, cementing Meta’s turn to turn to nuclear energy to power its energy intensive,

Citi downgrades Constellation Energy after securing a 20-year nuclear power deal with Meta. The investment bank believes there’s limited near-term upside for the stock. Citi also downgraded the outlook for Constellation Brands from Buy to Neutral.