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Monolithic Power Systems jumps on peer power delivery outlook

Shares gained 8.1% after upbeat peer guidance boosted semiconductor sentiment, while EasyAlpha maintains a B quality grade on strong revenue expansion.

EasyAlpha Research · Sep 22, 2026 · Sep 22, 6:45 PM EDTPlus

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MPWR · Monolithic Power Systems Inc

$1,380.62+8.1%

Good quality

Our grade

52-week range

Today · $1,380.62
Low $828.85High $1,711.48
Open MPWR as of Sep 22, 6:45 PM EDT
  • Our read: EasyAlpha grades Monolithic Power Systems Inc B for quality against industry peers in the S&P 500, led by robust growth while rich valuation remains the key watch item.
  • The day: The stock rose 8.1% to $1,380.62 on Tuesday, September 22 as upbeat revenue guidance from a power-hardware peer boosted semiconductor sentiment.
  • Watching: The next scheduled earnings report on Thursday, October 29.

The shares advanced 8.1% on Tuesday, September 22, trading on 2.3x their 20-session average volume. The move tracked broader enthusiasm as technology and semiconductor shares rose throughout the session. The specific catalyst emerged in the power-hardware space, where peer Vicor raised its quarterly revenue growth outlook above 20% on licensing for vertical power delivery systems. While Monolithic Power Systems issued no company-specific news on the day, the peer update reinforced positive expectations for specialized power-management demand.

The gain builds on a rally that has lifted the stock +52.3% so far this year. EasyAlpha grades Monolithic Power Systems Inc B for quality compared to industry peers in the S&P 500. In historical analysis, companies graded A or B have exhibited stronger fundamentals and lower risk of large drawdowns than those graded D or E. The company looks strongest in growth, supported by quarterly revenue expansion of +47.6% year over year alongside a 24.5% profit margin.

The main vulnerability remains valuation. With a forward price-to-earnings ratio of 34.2, the valuation leaves little room for execution stumbles. Wall Street analysts remain positive, with 93.8% of the 16 ratings at buy and an average price target of $1,839.80. Investors will see whether financial execution keeps pace with expectations when the company reports earnings on Thursday, October 29.

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