Shares of Constellation Energy Corp (CEG) tumbled 7.76% in pre-market trading on Tuesday following the release of the company's first-quarter 2025 earnings report. The significant drop comes as the energy giant's results fell short of analyst expectations, disappointing investors.

Constellation Energy reported adjusted operating earnings per share of $2.14 for the first quarter, missing the consensus estimate of $2.18 according to LSEG IBES data. This earnings miss, albeit slight, appears to have triggered a sell-off among investors who may have been anticipating stronger performance from the company. The reported EPS also fell below the average analyst projection of $2.22 per share.

Despite the negative market reaction, Constellation Energy provided an update on its strategic moves, stating that its acquisition of Calpine is expected to be completed by year-end. This development could potentially impact the company's future performance. However, investors seem to be focusing on the immediate earnings shortfall, leading to the sharp pre-market decline in the stock price.