Shares of NET Power (NPWR) tumbled 8.81% in Thursday's trading session following the release of the company's disappointing third-quarter 2025 financial results. The significant drop came as investors reacted to a substantial loss that far exceeded analysts' expectations.

NET Power reported a staggering loss of $5.28 per diluted share for the third quarter, marking a dramatic reversal from the $0.01 profit per share recorded in the same period last year. This result caught the market off guard, as it significantly underperformed the FactSet consensus estimate of a $0.16 loss per share. Adding to investor concerns, the company did not report any revenue for the quarter, raising questions about its operational performance.

The unexpectedly poor financial results appear to have shaken investor confidence in NET Power's near-term prospects. As the company grapples with mounting losses and a lack of reported revenue, market participants are likely reassessing the stock's valuation and growth potential. The sharp sell-off reflects the market's immediate reaction to these disappointing figures, as investors adjust their expectations for the company's future performance.