Monolithic Power Systems, Inc. (MPWR)

Monolithic Power Systems' stock has been volatile, with 27 moves greater than 5% over the last year. As of late September 2025, the stock was up 51.5% year-to-date. The total return for MPWR stock over the past 12 months was 0.44%, underperforming the S&P 500's 19.07% return. The 52-week high for MPWR was $954.00 on October 14, 2024, and its 52-week low was $438.86 on April 8, 2025. In Q2 CY2025, Monolithic Power Systems reported record quarterly revenue of $664.6 million, exceeding Wall Street's expectations by 1.9%, and its non-GAAP profit of $4.21 per share also beat estimates by 2.2%. The company provided strong guidance for Q3 CY2025, projecting 8% sequential growth at the midpoint, with enterprise data expected to grow between 20% and 30% sequentially, and a seasonal uplift in consumer demand. Analysts have upgraded ratings and increased price targets for MPWR, citing strong demand for its power-management products, particularly in the AI power and automotive sectors. Around early September 2025, the stock experienced a drop of 2.3% due to broader market retreats, profit-taking, concerns about tariffs, and rising Treasury yields.

Monolithic Power Systems operates within the cyclical semiconductor industry, which experiences seasonal demand for certain products. The semiconductor industry is characterized by periods of high growth followed by contractions. For Q3 2025, the company anticipates a seasonal uplift in consumer demand.

Monolithic Power Systems, Inc. (MPWR) designs, develops, and markets analog and mixed-signal semiconductor solutions, primarily focusing on power management integrated circuits (ICs). The company operates within the Technology sector and the Semiconductors industry with a mission to reduce total energy consumption in end systems. Its major products include power management ICs, lighting solutions, automotive solutions, industrial applications and Class D Audio Amplifier products.

Monolithic Power Systems operates globally, with offices and design centers located in North America, Asia, and Europe. The company markets and sells its products in various regions, including the United States, China, Taiwan, South Korea, Europe, Southeast Asia, and Japan.

Monolithic Power Systems has established a reputation as a disruptor in the power management chip market, known for its rapid pace of innovation and ability to gain market share. The company is recognized for its highly integrated single-chip designs that offer smaller form factors and greater energy efficiency. MPWR's commitment to research and development ensures a continuous pipeline of cutting-edge technologies. In 2023, the company made progress on its long-term ESG goals, including adding a second female director to its Board and committing to reduce Scope 1 and 2 greenhouse gas emissions by 40% by 2030, and to be powered globally by 75% renewable electricity by 2026. However, there are ongoing legal proceedings regarding alleged product quality issues, which represent a current risk to the company's reputation, though recent strong earnings have not materially impacted this concern in the short term.

Monolithic Power Systems, Inc. is primarily owned by institutional investors, reflecting strong confidence from the investment community. Institutional ownership ranges from approximately 98.7% to 99.31% of the total shares outstanding. Major institutional owners include Vanguard Group Inc, BlackRock, Inc., Fmr Llc, State Street Corp, Price T Rowe Associates Inc /md/, Geode Capital Management, Llc, and Invesco Ltd. Insider ownership is also notable, aligning leadership interests with shareholders. Jim J. Jones III is identified as the largest individual shareholder, holding 13.65% of the company's shares.