What Happened?
A number of stocks fell in the afternoon session after a broad-based sell-off hit the semiconductor sector following news of a potential strike at Samsung and a stake sale by Taiwan Semiconductor Manufacturing (TSMC), which rattled global chip supply chains.
These events highlighted significant supply-chain risks, triggering a sharp reversal across the chip industry. Adding to the sector's weakness were rising valuation concerns, inflation fears, and broader market jitters that led to renewed selling pressure on major companies like NVIDIA, Intel, and Micron Technology.
Furthermore, ongoing supply constraints for rare earth materials, which are used in semiconductor manufacturing, reportedly caused delays and higher input costs for firms in the sector, compounding the negative sentiment for chip-related stocks.
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 Nova (NASDAQ: NVMI) fell 5.1%. Is now the time to buy Nova? Access our full analysis report here, it’s free.
- Semiconductor Manufacturing company Amtech (NASDAQ: ASYS) fell 5.8%. Is now the time to buy Amtech? Access our full analysis report here, it’s free.
- Semiconductor Manufacturing company Entegris (NASDAQ: ENTG) fell 5%. Is now the time to buy Entegris? Access our full analysis report here, it’s free.
Zooming In On Amtech (ASYS)
Amtech’s shares are extremely volatile and have had 72 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 7 days ago when the stock gained 3.8% on as worries about a global chip shortage reached parabolic territory driven by AI optimism and strong investor momentum.
Micron posted its best weekly gain in years and Samsung crossed the $1 trillion market capitalization. DRAM contract prices rose significantly in Q2 2026, with cloud companies locking in 2027 supply from memory producers. Bernstein issued a bullish note on memory stock, citing structural supply-demand imbalance. Memory chips, DRAM and NAND, store data inside every computing device, from phones to AI servers. The AI buildout requires far more memory per server than conventional cloud computing, outpacing production capacity.
Micron, Samsung, and SK Hynix together produce over 90% of the world's DRAM. When their combined supply cannot meet AI-driven demand, prices and margins expand rapidly. The shortage entered deficit territory in 2025 and is not expected to resolve until 2027 at the earliest, making the move a structural story, not a one-day trade.
Amtech is up 54% since the beginning of the year, but at $19.94 per share, it is still trading 12.1% below its 52-week high of $22.68 from May 2026. Investors who bought $1,000 worth of Amtech’s shares 5 years ago would now be looking at an investment worth $2,231.
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