On September 14, MKS Instruments fell 7.47% in regular trading, trading at $245.70/share, with turnover of $39.23 million.

On the news front, escalating US-China trade friction combined with tighter semiconductor export controls exerted systemic pressure across the semiconductor equipment sector, triggering a broad selloff. Within the Semiconductor Equipment sector, ASML Holding fell 5.75%, Applied Materials fell 6.38%, Lam Research fell 6.96%, KLA Corporation fell 5.56%, and Teradyne fell 9.67%.

As a global leader in instruments, systems, and process control solutions, MKS Instruments serves semiconductor capital equipment and device manufacturers with products spanning pressure measurement, flow control, gas delivery, and vacuum technology. The company holds a dominant position alongside Horiba in the global Mass Flow Controller market, a critical component for front-end etch and deposition equipment. Heightened trade policy uncertainty poses direct risks to its cross-border supply chain and customer demand outlook, amplifying its sensitivity to sector-wide headwinds.

(The above content is based on publicly available market information, generated by a program or algorithm, and is intended solely as a stock movement alert. It does not constitute investment advice or a basis for trading decisions.)