NRG Energy Inc. (NRG) shares plummeted 7.31% in pre-market trading on Wednesday following the release of its second-quarter 2025 financial results. The energy company's earnings fell short of analyst expectations, and its full-year guidance came in below market estimates, sparking significant investor concerns.

For the second quarter, NRG reported non-GAAP earnings of $1.73 per diluted share, slightly missing the $1.74 expected by analysts surveyed by FactSet. While this represents a marginal improvement from $1.70 a year earlier, it wasn't enough to impress investors. The company's revenue for the quarter ended June 30 was $6.74 billion, surpassing both the previous year's $6.66 billion and analyst expectations of $6.45 billion. Despite the revenue beat, NRG posted a net loss of $104 million for the quarter, although this marks a significant improvement from the same period last year.

Adding to the downward pressure, NRG reaffirmed its adjusted earnings guidance for fiscal 2025 of $6.75 to $7.75 per share, which falls below the $7.86 expected by analysts. This conservative outlook appears to be a key factor in the stock's pre-market decline. On a more positive note, NRG announced plans to return $1.3 billion to shareholders via share repurchases in 2025, which may help to mitigate some investor concerns in the long term. As NRG Energy aims to navigate through these headwinds, investors will be closely monitoring the company's performance in the coming quarters for signs of improvement.