What Happened?

A number of stocks jumped in the morning session after weaker-than-expected U.S. employment data cooled Treasury yields, easing interest rate pressure. 

The Bureau of Labor Statistics reported that nonfarm payrolls increased by 29,000 in September, falling short of the 84,000 projected by economists polled by Dow Jones, while the unemployment rate rose to 4.2%. For the broader group, softer hiring eases interest-rate pressure on high-multiple growth equities by pulling borrowing costs lower. However, further deceleration in the labor market risks dampening cyclical end-market demand across industrial and automotive chip channels. Semiconductor valuations expand when falling yields reduce the discount rate on long-duration earnings, provided enterprise infrastructure spending does not deteriorate.

The stock market overreacts to news, and big price drops can present good opportunities to buy high-quality stocks.

Among others, the following stocks were impacted:

• Analog Semiconductors company Impinj (NASDAQ: PI) jumped 3.9%. Is now the time to buy Impinj? Access our full analysis report here, it’s free.
• Analog Semiconductors company Power Integrations (NASDAQ: POWI) jumped 5.8%. Is now the time to buy Power Integrations? Access our full analysis report here, it’s free.
• Semiconductor Manufacturing company Kulicke and Soffa (NASDAQ: KLIC) jumped 4.2%. Is now the time to buy Kulicke and Soffa? Access our full analysis report here, it’s free.
• Analog Semiconductors company Microchip Technology (NASDAQ: MCHP) jumped 4.5%. Is now the time to buy Microchip Technology? Access our full analysis report here, it’s free.
• Analog Semiconductors company Monolithic Power Systems (NASDAQ: MPWR) jumped 6%. Is now the time to buy Monolithic Power Systems? Access our full analysis report here, it’s free.

Zooming In On Monolithic Power Systems (MPWR)

Monolithic Power Systems’s shares are extremely volatile and have had 35 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful but not something that would fundamentally change its perception of the business.

The previous big move we wrote about was 10 days ago when the stock gained 8.3% on the news that growing optimism surrounding agentic artificial intelligence and Meta Platforms' Muse application fueled expectations of higher demand for central processing units. 

Reuters reported that Meta's Muse application has highlighted the specialized hardware needed to support these next-generation workflows. While initial generative AI infrastructure prioritized graphics accelerators for model training, agentic frameworks depend heavily on central processing units to coordinate complex operations and manage logic across sequential processes. This shift suggests a broadened demand profile across semiconductor hardware suppliers as autonomous enterprise software capabilities expand.

Monolithic Power Systems is up 54.1% since the beginning of the year, but at $1,442 per share, it is still trading 14.6% below its 52-week high of $1,690 from June 2026. Investors who bought $1,000 worth of Monolithic Power Systems’s shares 5 years ago would now be looking at an investment worth $3,109.

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