Is Amphenol Corp. overvalued or undervalued?

As of 31 October 2025, the valuation grade for Amphenol Corp. has moved from very attractive to attractive, indicating a shift in perception. The company appears to be overvalued based on its current metrics, 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 deemed 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.
Recent performance shows that Amphenol Corp. has significantly outperformed the S&P 500, with a year-to-date return of 103.82% compared to the S&P 500's 16.30%. This strong performance may contribute to the perception of overvaluation, as the stock has surged while its valuation ratios remain elevated.