SCHEDULE: FMR LLC Discloses 8.3% Stake in Monolithic Power Systems

FMR LLC and Abigail P. Johnson report an 8.3% beneficial ownership stake in Monolithic Power Systems Inc. common stock as of December 31, 2025.

Summary

• FMR LLC and Abigail P. Johnson collectively reported beneficial ownership of 3,977,007.87 shares of Monolithic Power Systems Inc. common stock.
• This represents an 8.3% stake in the company's total outstanding common stock.
• FMR LLC holds sole voting power over 3,736,527.22 shares and sole dispositive power over 3,977,007.87 shares.
• Abigail P. Johnson's beneficial ownership is tied to her role and family's control of FMR LLC, with sole dispositive power over 3,977,007.87 shares.
• The filing explicitly states the securities were acquired and are held in the ordinary course of business, not for the purpose of changing or influencing control of Monolithic Power Systems Inc.
• Several FMR LLC subsidiaries, including Fidelity Management & Research Company LLC, are identified as entities beneficially owning shares, with Fidelity Management & Research Company LLC owning 5% or greater.

Sentiment

Score: 7

Explanation: StockSavvy.ai views this as a moderately positive development, as a substantial 8.3% stake by a prominent institutional investor like FMR LLC indicates strong conviction in Monolithic Power Systems' long-term prospects.

Positives

• A significant 8.3% beneficial ownership stake by a major institutional investor like FMR LLC signals confidence in Monolithic Power Systems Inc.'s long-term prospects.
• The filing explicitly states the shares are held in the ordinary course of business and not for influencing control, suggesting a passive, long-term investment perspective.

Future Outlook

NA

Industry Context

StockSavvy.ai notes that Monolithic Power Systems operates in the power management and analog semiconductor industry, a critical sector for various electronics, automotive, and industrial applications. A significant stake by a major asset manager like FMR LLC suggests a positive long-term view on the company's position within this growing market, potentially driven by trends in electrification and energy efficiency.

Comparison to Industry Standards

• StockSavvy.ai observes that an 8.3% stake by a single institutional investor or affiliated group is a substantial position, often indicating a high conviction investment.
• For comparison, large institutional holdings in similar semiconductor companies like Texas Instruments or Analog Devices typically see a diverse range of institutional investors, with individual stakes rarely exceeding 10-15% without triggering more active engagement.
• This level of ownership by FMR LLC positions them as a key, albeit passive, shareholder in Monolithic Power Systems.

Stakeholder Impact

• Shareholders: The presence of a large, passive institutional investor like FMR LLC can provide stability and long-term confidence, potentially reducing volatility.
• Management: Management of Monolithic Power Systems Inc. will be aware of a significant shareholder, but the 'passive' nature of the investment (not seeking to influence control) suggests no immediate pressure for strategic changes.

Key Dates

Recommendation

The filing indicates a substantial, passive institutional stake by FMR LLC in Monolithic Power Systems Inc. This is generally a positive signal of long-term confidence from a major asset manager. However, as a Schedule 13G, it does not provide new operational or financial data to warrant a 'buy' or 'sell' recommendation. It primarily confirms a significant existing ownership position, suggesting investors should 'hold' their current positions while monitoring future company performance and any changes in this institutional stake.

Keywords

Monolithic Power Systems, MPS, FMR LLC, Abigail P. Johnson, Beneficial Ownership, Schedule 13G, Institutional Investor, Common Stock, Semiconductors, Power Management