MKSI is trading 5% up today at $436.79, extending a strong rally following its Q1 2026 financial results.

  • MKS Instruments reported Q1 EPS of $2.30 on revenue of $1.08 billion, surpassing analyst estimates of $2.04 EPS and $1.05 billion in revenue.
  • The current move appears to be continuation buying, building on a nearly 10% surge immediately following the report and a 7.05% gain recorded on June 29.