Is Amphenol Corp. overvalued or undervalued?

As of 31 October 2025, the valuation grade for Amphenol Corp. moved from very attractive to attractive, indicating a shift in its perceived investment value. The company appears to be overvalued based on its current metrics, particularly with a P/E ratio of 41, a Price to Book Value of 10.98, and an EV to EBITDA of 27.11. In comparison, Corning, Inc. is classified as very expensive with a P/E of 107.91 and an EV to EBITDA of 42.50, highlighting that while Amphenol is relatively better positioned, it still carries a high valuation.
Despite the elevated valuation, Amphenol has demonstrated strong performance, with a year-to-date return of 100.63% compared to the S&P 500's 16.30%, and a one-year return of 107.91% against the S&P 500's 19.89%. This performance suggests that while the stock may be overvalued, it has significantly outperformed the broader market in recent periods.