Is Littelfuse, Inc. overvalued or undervalued?

As of 17 October 2025, the valuation grade for Littelfuse, Inc. has moved from attractive to very expensive, indicating a shift towards overvaluation. The company appears to be overvalued based on its P/E ratio of 26, which is higher than the peer average of 30.08 for similar companies, and an EV to EBITDA ratio of 13.74, which is also below the peer average of 15.40. Additionally, Littelfuse's Price to Book Value stands at 2.34, suggesting that the stock may be trading at a premium compared to its book value.
In comparison to its peers, Universal Display Corp. has a P/E ratio of 28.20 and an EV to EBITDA of 21.14, while Advanced Energy Industries, Inc. shows a significantly higher P/E of 43.33, reinforcing the notion that Littelfuse is on the expensive side. Notably, Littelfuse's recent stock performance has lagged behind the S&P 500 over the 1-year, 3-year, and 5-year periods, with returns of 1.03%, 29.93%, and 37.43% respectively, compared to the S&P 500's 14.08%, 81.19%, and 91.29%. This further supports the conclusion that Littelfuse, Inc. is currently overvalued.