MPWR Earnings Surge: Data Center and Automotive Growth Drive Q4 Beat and Outlook

Monolithic Power Systems (NASDAQ:MPWR) reported Q4 CY2025 revenue of $751.2 million, 20.8% up year-over-year, and well-above estimates, with non-GAAP profit of $4.79 per share 1.1% higher than consensus. Q1 CY2026 guidance of $780 million at the midpoint was 5.7% above analyst expectations. The results reflect strong momentum in enterprise data and communications, with non-enterprise data end markets up over 40% YoY. Management cited design wins across AI, server, and 48-volt automotive applications, as well as expanding data center power solutions and zonal architectures. Looking ahead, the company highlighted growing backlog, visibility into customer demand, and plans to scale supply chain capacity. CAUTION: potential constraints and evolving demand could affect results. MPWR closed at $1,178, up from $1,156 before the earnings. Key watchpoints include AI data center solution adoption, automotive expansion execution, gross margin trends, and leadership transitions.