SCHEDULE: Vanguard Group Discloses 12.4% Stake in Monolithic Power Systems

The Vanguard Group has filed an amended Schedule 13G, reporting a 12.4% beneficial ownership stake in Monolithic Power Systems Inc. as of June 30, 2025.

Summary

• The Vanguard Group beneficially owns 5,939,946 shares of Monolithic Power Systems Inc. Common Stock.
• This ownership represents 12.40% of the class of securities.
• Vanguard holds 0 shares with sole voting power, 62,841 shares with shared voting power, 5,709,572 shares with sole dispositive power, and 230,374 shares with shared dispositive power.
• The filing is an Amendment No. 14 to a previous Schedule 13G.
• The securities were acquired and are held in the ordinary course of business, not for the purpose of changing or influencing control of the issuer.

Sentiment

Score: 5

Explanation: The filing is a routine disclosure of beneficial ownership by a large institutional investor and does not contain inherently positive or negative news.

Future Outlook

NA

Industry Context

This filing reflects a routine disclosure by a major institutional asset manager, The Vanguard Group, regarding its passive investment holdings in Monolithic Power Systems Inc., a company operating in the semiconductor industry. Such disclosures are common for large index fund providers and active managers who cross the 5% ownership threshold.

Stakeholder Impact

• Shareholders: Provides transparency regarding a significant institutional holder's stake, confirming a large, passive investment.

Key Dates

Keywords

Monolithic Power Systems, Vanguard Group, MPS, Common Stock, Beneficial Ownership, Institutional Investor, SEC Filing, Schedule 13G, Equity Holdings