Is Corning, Inc. overvalued or undervalued?

As of 17 October 2025, Corning, Inc. moved from fair to very expensive in its valuation grade. The company is overvalued based on its current metrics, with a P/E ratio of 94, a Price to Book Value of 8.61, and an EV to EBITDA ratio of 33.00. In comparison, Amphenol Corp., a peer in the same industry, has a P/E ratio of 41.01, indicating that Corning is trading at a significant premium relative to its peers.
Despite its recent strong performance, with a year-to-date return of 77.80% compared to the S&P 500's 13.30%, the elevated valuation ratios suggest that the market may have overestimated Corning's growth potential. The PEG ratio of 2.97 further supports the view that the stock is priced for high growth that may not be sustainable.