What Happened?

A number of stocks fell in the morning session after the U.S. government announced new tariffs of 10% to 12.5% on 60 trading partners over concerns related to forced labor. The targeted nations include the European Union, Japan, South Korea, and Taiwan—the fundamental pillars of the global semiconductor supply chain. While the U.S. designs many of the world's leading chips, the industry relies heavily on imported specialty chemicals, raw silicon wafers, and multi-million-dollar fabrication equipment from these exact regions. Furthermore, many U.S. chipmakers use Outsourced Semiconductor Assembly and Test (OSAT) facilities overseas, meaning finished chips imported back into the U.S. could now face double-digit taxes. Because these new Section 301 tariffs are considered legally durable and potentially permanent, investors are pricing in long-term margin compression across the U.S. hardware and semiconductor space. This triggered a broad sell-off across the entire sector, amplifying a global rout that began overnight with Asian chip heavyweights Samsung and SK Hynix.

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:

• Semiconductor Manufacturing company Amtech (NASDAQ: ASYS) fell 3.2%. Is now the time to buy Amtech? Access our full analysis report here, it’s free.
• Semiconductor Manufacturing company Semtech (NASDAQ: SMTC) fell 5%. Is now the time to buy Semtech? Access our full analysis report here, it’s free.
• Semiconductor Manufacturing company Nova (NASDAQ: NVMI) fell 4.1%. Is now the time to buy Nova? Access our full analysis report here, it’s free.
• Analog Semiconductors company Power Integrations (NASDAQ: POWI) fell 3.8%. Is now the time to buy Power Integrations? Access our full analysis report here, it’s free.
• Semiconductor Manufacturing company FormFactor (NASDAQ: FORM) fell 4.3%. Is now the time to buy FormFactor? Access our full analysis report here, it’s free.

Zooming In On Semtech (SMTC)

Semtech’s shares are extremely volatile and have had 51 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 8 days ago when the stock dropped 5.3% on the news that TSMC paired topline strength with a free cash flow-compressing capital expenditure reset, compounding a sector-wide selloff that began with ASML the day before. TSMC shares fell roughly 4% despite a record profit beat. The company raised its full-year 2026 revenue growth outlook to slightly above 40%, but simultaneously increased its capital expenditure guidance to $60–$64 billion, up from a prior ceiling of $56 billion. Management also guided third-quarter operating margins roughly 70 basis points below consensus and warned that overseas expansion and 2-nanometer ramp costs would dilute gross margins in the second half of the year. The market continued to price the semiconductor sector on top-line artificial intelligence demand, which TSMC confirmed remains "extremely robust." However, the capex reset shifts investor focus to cash generation and the explicit cost of staying at the leading edge. Every incremental dollar of TSMC's capex increase could be a drain on near-term free cash flow, compressing the yields needed to justify the sector's lofty valuation multiples. This explains why the broader group sold off despite objectively strong revenue metrics from both TSMC and ASML this week. The read-through for the sector is that scaling AI manufacturing capacity will be exceptionally expensive, forcing a multiple de-rating as profit margins absorb the burden of rapid expansion. The market will now watch upcoming earnings from major hyperscalers to see if downstream software monetization can ultimately justify the massive capital costs flowing through the hardware supply chain.

Semtech is up 73.5% since the beginning of the year, but at $130.59 per share, it is still trading 22.9% below its 52-week high of $169.35 from June 2026. Investors who bought $1,000 worth of Semtech’s shares 5 years ago would now be looking at an investment worth $2,143.

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