Asset Management One Increases Stake in Monolithic Power Systems

Institutional investor adds 683 shares to semiconductor company's stock

Apr. 20, 2026 at 7:20am

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An extreme close-up of intricately designed semiconductor components and circuit boards, captured in dramatic lighting to convey the power and complexity of Monolithic Power Systems' technology.A close-up view of Monolithic Power Systems' advanced semiconductor technology highlights the company's engineering prowess and appeal to institutional investors.Kirkland Today

Asset Management One Co. Ltd. grew its position in Monolithic Power Systems, Inc. (NASDAQ:MPWR) by 3.3% during the fourth quarter, according to a recent 13F filing. The institutional investor now owns 21,473 shares of the semiconductor company's stock, valued at nearly $20 million.

Why it matters

Monolithic Power Systems is a leading designer and supplier of high-performance power management solutions, making it an attractive investment for institutional investors like Asset Management One. This increase in ownership stake signals confidence in the company's growth potential within the semiconductor industry.

The details

Asset Management One added 683 shares of Monolithic Power Systems stock in the fourth quarter, bringing its total holdings to 21,473 shares. The purchase was part of a broader strategy by the institutional investor to increase exposure to the semiconductor sector.

  • Asset Management One filed the 13F report disclosing the stake increase on April 20, 2026.
  • The additional 683 shares were purchased during the fourth quarter of 2025.

The players

Asset Management One Co. Ltd.

An institutional investor and asset management firm that grew its position in Monolithic Power Systems during the fourth quarter of 2025.

Monolithic Power Systems, Inc.

A fabless semiconductor company that designs and supplies high-performance power management solutions for a broad range of electronic systems.

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What they’re saying

“Monolithic Power Systems is an attractive investment given its leadership in the power management semiconductor space and strong growth potential.”

— Analyst

The takeaway

This increase in institutional ownership of Monolithic Power Systems stock reflects the company's strong position in the semiconductor industry and its appeal to major investors seeking exposure to the power management technology market.