Earnest Partners Increases Stake in Monolithic Power Systems

Investment firm grows position in semiconductor company by 1.3% in Q3

Mar. 15, 2026 at 12:04pm

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Earnest Partners LLC, an institutional investor, increased its stake in Monolithic Power Systems, Inc. (NASDAQ:MPWR) by 1.3% during the third quarter of 2025. The firm now owns 205,779 shares of the semiconductor company's stock, valued at $189,448,000.

Why it matters

Monolithic Power Systems is a major player in the semiconductor industry, designing and supplying high-performance power management solutions. The increase in Earnest Partners' stake suggests the firm sees continued growth potential in the company.

The details

Earnest Partners acquired an additional 2,643 shares of Monolithic Power Systems during the third quarter, bringing its total position to 205,779 shares. The firm's holdings in the semiconductor company are now valued at $189,448,000.

  • Earnest Partners increased its stake in Monolithic Power Systems during the third quarter of 2025.

The players

Earnest Partners LLC

An institutional investor that manages a portfolio of investments, including a position in semiconductor company Monolithic Power Systems.

Monolithic Power Systems, Inc.

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

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The takeaway

Earnest Partners' increased stake in Monolithic Power Systems suggests the investment firm sees continued growth potential in the semiconductor company, which is a major player in the power management solutions market.