Is Amkor Technology, Inc. overvalued or undervalued?

As of 17 October 2025, the valuation grade for Amkor Technology, Inc. has moved from attractive to fair, indicating a shift in its perceived value. The company appears to be fairly valued based on its current metrics, with a P/E ratio of 18, a Price to Book Value of 1.36, and an EV to EBITDA of 5.31. In comparison, peers such as Fabrinet and Skyworks Solutions, Inc. have higher P/E ratios of 41.84 and 20.61, respectively, suggesting that Amkor is positioned competitively within its industry.
Despite its fair valuation, Amkor has demonstrated strong recent performance, with a year-to-date return of 21.80%, significantly outperforming the S&P 500's return of 13.30% over the same period. However, over the longer term, its 10-year return of 144.45% lags behind the S&P 500's 227.77%, indicating potential challenges in maintaining growth momentum.