Monolithic Power Systems stock surges 11% as AI server demand drives Enterprise Data revenue up 164%

Why is Monolithic Power Systems stock surging today? By Investing.com

Investing.com -- Monolithic Power Systems stock surged 11.0% in after-hours trading after the power management chipmaker reported second-quarter 2026 results that topped Wall Street estimates on both the top and bottom lines. Revenue reached $980.6 million, rising 21.9% sequentially and 47.6% year-over-year, comfortably beating the analyst consensus of roughly $901 million. Non-GAAP EPS came in at $6.50, with non-GAAP gross margin at 55.6%, reflecting strong operational execution across the business. The standout segment was Enterprise Data, which delivered $380.6 million in revenue -- up 44.8% sequentially and 164.3% year-over-year, underscoring the company's deepening exposure to AI infrastructure buildout. Looking ahead, Monolithic Power forecast Q3 revenue of $1.14B-$1.16B and added $500 million to its stock-repurchase authorization, bringing the total to $1 billion. CEO and founder Michael Hsing stated: "Our results demonstrate the strength of our diversified model and our continued success in transforming from a chip-only, semiconductor supplier to a full service solutions provider." A Form 4 insider filing was also submitted for July 28, though no further details on the nature or size of the transaction were disclosed. The broader U.S. equity market provided little directional help on the day, with the S&P 500 adding just 0.1% and the NASDAQ gaining 0.3%, confirming that the after-hours move in MPWR was driven entirely by company-specific news rather than macro or sector tailwinds. The company has been benefiting significantly from the rapid expansion of AI infrastructure spending, driven by strong demand for power management solutions used in AI servers, optical networking equipment, and high-performance computing applications -- a theme that the Q2 results validated emphatically. Taken together, the combination of a substantial revenue beat, a non-GAAP EPS surprise of $0.65 above consensus, and Q3 guidance that towered above expectations created a compelling catalyst for the after-hours rally. With the stock having traded as low as $706 over the past 52 weeks before recovering, today's move to $1,460.75 signals renewed investor conviction in the company's AI-driven growth trajectory and its expanding role as a full-system solutions provider in the semiconductor space. This article was generated with the support of AI and reviewed by an editor. For more information see our T&C.

Monolithic Power Systems jumps 8% as AI lifts results and outlook

The US power-management semiconductor specialist posted revenue of $980.6m, up 48% y-o-y, above the $903.3m expected, while adjusted EPS came in at $6.50, compared with a consensus of $5.87. Its adjusted operating margin also improved to 37.5%, up from 34.8% a year earlier. The acceleration is driven above all by the Enterprise Data business, where revenue surged 164% y-o-y to $380.6m and now represents nearly 39% of sales. The power-management solutions maker is benefiting directly from the ramp-up in AI servers, while broadening its exposure with initial orders for DDR5 components and the sampling of high-voltage AC/DC products aimed at future 800-volt architectures. That shift is becoming a central industry theme, as data-center operators look to improve the energy efficiency of racks that are consuming ever more power. The main catalyst behind the stock's reaction, however, is its Q3 outlook, with revenue expected between $1.14bn and $1.16bn, implying a midpoint of $1.15bn that is well above pre-release expectations. Monolithic Power Systems also raised its capacity target to well above $6bn in revenue and increased its total share repurchase authorization to $1bn.