Semtech and Lam Research Shares Plummet, What You Need To Know
What Happened?
A number of stocks fell in the afternoon session after 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.
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 Semtech (NASDAQ:SMTC) fell 5.3%. Is now the time to buy Semtech? Access our full analysis report here, it’s free.
- Semiconductor Manufacturing company Lam Research (NASDAQ:LRCX) fell 5.3%. Is now the time to buy Lam Research? Access our full analysis report here, it’s free.
Zooming In On Semtech (SMTC)
Semtech’s shares are extremely volatile and have had 50 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 2 days ago when the stock gained 5.7% on the news that Needham reiterated its Buy rating and a $200 price target on the stock following recent investor meetings with company executives.
The investment firm cited robust demand and expectations for strong performance in the second half of 2026 and 2027. Key growth drivers identified included better-than-expected shipments of 800G and 1.6T optical modules, which are components for high-speed data transfer. The analyst also pointed to the adoption of the company's CopperEdge ACC solutions by a major cloud computing customer and growing demand for its LoRa+ wireless solutions.
Semtech is up 70.2% since the beginning of the year, but at $128.07 per share, it is still trading 24.4% 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 $2,102.
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