Is MKS Instruments, Inc. overvalued or undervalued?

As of 17 October 2025, the valuation grade for MKS Instruments, Inc. has moved from very attractive to attractive. The company appears to be fairly valued given its current metrics. Key ratios include a P/E ratio of 19, an EV to EBITDA of 11.18, and a PEG ratio of 0.30, which suggests strong growth potential relative to its price.
In comparison to peers, MKS Instruments, Inc. has a P/E ratio of 23.90, which is lower than Woodward, Inc. at 42.20 and Graco, Inc. at 29.51, indicating it may be more attractively priced within its industry. The company's recent stock performance has outpaced the S&P 500, with a year-to-date return of 30.78% compared to the index's 13.30%, reinforcing its favorable valuation outlook.