Powell Industries (POWL) shares tumbled 13.54% over a 24-hour period, with the bulk of the decline occurring in after-hours trading, as the company's fiscal third-quarter results fell short of Wall Street expectations. The electrical energy solutions provider reported revenue of $312 million, missing the IBES consensus estimate of $315.2 million, while earnings per share of $1.42 also came in below FactSet estimates of $1.46.

The revenue miss triggered a sharp unwinding of bullish sentiment that had built up during the regular session, where the stock initially gained ground alongside strength in the Electrical Components & Equipment sector. Despite posting gross profit of $95 million and net income of $52 million, and announcing three mega orders during the quarter—including a data center order exceeding $400 million—the top-line shortfall disappointed investors who had maintained elevated expectations around high-margin order delivery and the resilience of energy end-market capital expenditure.

The post-market selloff reversed earlier intraday gains, reflecting a rapid repricing as traders reassessed the company's near-term growth trajectory. The quarterly dividend of $0.09 per share declared by the board failed to offset the negative reaction to the earnings miss.