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Kirkland Today
By the People, for the People
Blair William & Co. IL Increases Holdings in Monolithic Power Systems, Inc.
Institutional investor adds to stake in semiconductor company
Published on Mar. 10, 2026
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Blair William & Co. IL, an institutional investor, increased its stake in Monolithic Power Systems, Inc. (NASDAQ:MPWR) by 13.3% during the 3rd quarter, according to a disclosure with the Securities and Exchange Commission. The investor now owns 10,182 shares of the semiconductor company's stock, valued at $9,374,000.
Why it matters
Monolithic Power Systems is a leading semiconductor company that designs and supplies high-performance power management solutions. Institutional investor activity in the stock can provide insights into market sentiment and the company's performance.
The details
According to the disclosure, Blair William & Co. IL acquired an additional 1,195 shares of Monolithic Power Systems during the 3rd quarter, bringing its total holdings to 10,182 shares. The investment firm's stake in the semiconductor company is now valued at $9,374,000.
- The increase in holdings occurred during the 3rd quarter of the year.
The players
Blair William & Co. IL
An institutional investor that manages a portfolio of investments, including a position in Monolithic Power Systems.
Monolithic Power Systems, Inc.
A fabless semiconductor company that designs and supplies high-performance power management solutions for a broad range of electronic systems.
The takeaway
The increase in Blair William & Co. IL's stake in Monolithic Power Systems suggests the institutional investor sees value in the semiconductor company's growth prospects and performance. This activity could signal broader market confidence in Monolithic Power Systems' business and technology.

