Sumitomo Mitsui Trust Group Boosts Stake in Monolithic Power Systems

The institutional investor increased its holdings in the semiconductor company by 5.8% during the fourth quarter.

Apr. 14, 2026 at 10:24am

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Sumitomo Mitsui Trust Group Inc. has increased its stake in Monolithic Power Systems, Inc. (NASDAQ:MPWR) by 5.8% during the fourth quarter, according to a recent SEC filing. The institutional investor now owns 119,015 shares of the semiconductor company's stock, valued at $107.87 million as of the end of 2022.

Why it matters

This investment highlights the continued institutional interest in Monolithic Power Systems, a leading designer and supplier of high-performance power management solutions. As the semiconductor industry continues to evolve, Monolithic Power Systems' focus on efficiency, integration and power density makes it an attractive investment for large institutional investors like Sumitomo Mitsui Trust Group.

The details

Sumitomo Mitsui Trust Group Inc. purchased an additional 6,511 shares of Monolithic Power Systems during the fourth quarter, bringing its total holdings to 119,015 shares. This represents a 5.8% increase in the firm's stake in the semiconductor company. Monolithic Power Systems is known for its DC-DC switching regulators, power modules, power management ICs, LED drivers, and other power-related solutions.

  • Sumitomo Mitsui Trust Group Inc. increased its stake in Monolithic Power Systems during the fourth quarter of 2022.
  • The institutional investor's holdings in Monolithic Power Systems were valued at $107.87 million as of the end of 2022.

The players

Sumitomo Mitsui Trust Group Inc.

A major Japanese financial services group that provides banking, asset management, and other financial services.

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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The takeaway

Sumitomo Mitsui Trust Group's increased investment in Monolithic Power Systems underscores the semiconductor company's strong position in the power management market. As the industry continues to evolve, Monolithic Power Systems' focus on efficiency and integration makes it an attractive long-term play for institutional investors.