FNY Investment Advisers Buys $9.5M Stake in Monolithic Power Systems

The investment firm added 10,500 shares of the semiconductor company in Q4 2025.

Apr. 3, 2026 at 8:28am

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An extreme close-up of intricate, metallic machinery components in shades of grey, representing the complex power management technology inside semiconductor devices.An investment firm's multi-million dollar stake in a leading semiconductor company underscores the growing institutional confidence in power-efficient technologies.Kirkland Today

FNY Investment Advisers LLC, a financial services firm, disclosed in a recent SEC filing that it purchased a new $9.52 million stake in Monolithic Power Systems, Inc. (NASDAQ: MPWR) during the fourth quarter of 2025. The firm acquired 10,500 shares of the semiconductor company, making it the 6th largest holding in its portfolio.

Why it matters

Monolithic Power Systems is a leading designer and supplier of high-performance power management solutions used in a wide range of electronic devices. The investment by FNY suggests institutional confidence in the company's growth prospects amid the ongoing semiconductor shortage and rising demand for power-efficient technologies.

The details

According to the 13F filing, FNY Investment Advisers purchased the 10,500 shares of Monolithic Power Systems stock in the fourth quarter of 2025. This new position represents approximately 2.7% of the firm's total investment portfolio.

  • FNY Investment Advisers disclosed the new Monolithic Power Systems stake in a Q4 2025 SEC filing.
  • The 10,500 shares were purchased during the fourth quarter of 2025.

The players

FNY Investment Advisers LLC

A financial services firm that manages investments on behalf of institutional and individual clients.

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

This investment highlights the ongoing institutional interest in semiconductor companies like Monolithic Power Systems that are well-positioned to benefit from growing demand for power-efficient technologies across consumer electronics, industrial, and automotive applications.