Shares of Monolithic Power (MPWR) surged 9.50% in after-hours trading following the release of its second-quarter fiscal 2026 results, which handily exceeded Wall Street expectations.

The company reported adjusted earnings per share of $6.50, well above the consensus estimate of $5.87. Revenue climbed 47.6% year-over-year to $980.6 million, beating the $902.5 million analyst forecast. The standout performance was driven by Enterprise Data revenue, which soared 164.3% year-over-year to $380.6 million, fueled by robust demand for power management solutions in AI and server applications.

Additionally, Monolithic Power issued third-quarter revenue guidance of $1.14 billion to $1.16 billion, significantly higher than the consensus estimate of approximately $986 million. The company's board also authorized an additional $500 million in stock repurchases, bringing the total buyback program to $1 billion. These strong results and optimistic outlook fueled the sharp after-hours rally in the stock.