What Happened?
A number of stocks fell in the afternoon session after the chief executives of Anthropic, OpenAI, and SpaceX publicly united to call for a deliberate slowdown in the development of frontier AI models over escalating safety risks. According to CNBC, the sell-off was triggered by an essay published over the weekend by Anthropic CEO Dario Amodei, who urged a more cautious approach to frontier model advancement and called for independent safety monitoring. In a rare show of unity among competitors, the proposal was quickly endorsed by OpenAI CEO Sam Altman and SpaceX CEO Elon Musk. The unexpected warnings sparked immediate concern across the market regarding the sustainability of the heavy capital spending that has driven tech valuations higher. In response to the developments, Citigroup shifted to a neutral stance on broader equity risk, cautioning investors that any institutional pause or deceleration in AI deployments could temper corporate earnings growth and pressure chipmakers reliant on rapid, unchecked infrastructure expansion.
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:
- Memory Semiconductors company Seagate (NASDAQ:STX) fell 3.3%. Is now the time to buy Seagate? Access our full analysis report here, it’s free.
- Analog Semiconductors company Skyworks Solutions (NASDAQ:SWKS) fell 9.3%. Is now the time to buy Skyworks Solutions? Access our full analysis report here, it’s free.
- Semiconductor Manufacturing company Semtech (NASDAQ:SMTC) fell 10.4%. Is now the time to buy Semtech? Access our full analysis report here, it’s free.
- Semiconductor Manufacturing company Nova (NASDAQ:NVMI) fell 8.7%. Is now the time to buy Nova? Access our full analysis report here, it’s free.
- Semiconductor Manufacturing company FormFactor (NASDAQ:FORM) fell 7.6%. 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 73 moves greater than 5% over the last year. But moves this big are rare even for Semtech and indicate this news significantly impacted the market’s perception of the business.
The previous big move we wrote about was 3 days ago when the stock gained 6.4% on the news that macroeconomic relief from declining Treasury yields and lower oil prices, coupled with robust artificial intelligence demand projections, boosted sentiment across the chip industry. Per TipRanks, Nvidia CEO Jensen Huang reaffirmed long-term projections of $3 trillion to $4 trillion in global AI infrastructure spending by 2030, reinforcing structural growth expectations for hardware providers. This sentiment was further supported by solid AI cloud performance reported by Oracle, which signaled sustained enterprise appetite for data center expansion. Meanwhile, macroeconomic tailwinds offered additional momentum as falling Treasury yields and lower energy costs eased broader market pressures following a recent pullback. Together, these factors lifted optimism for key chipmakers, including Nvidia, Advanced Micro Devices, Micron Technology, and Intel, highlighting how broader economic signals and sustained cloud computing investments continue to drive sector-wide valuations.
Semtech is up 99% since the beginning of the year, but at $149.80 per share, it is still trading 14.3% below its 52-week high of $174.73 from June 2026. Investors who bought $1,000 worth of Semtech’s shares 5 years ago would now be looking at an investment worth $1,958.
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