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 is considered overvalued based on its key ratios, including a P/E ratio of 26, an EV to EBITDA of 13.74, and a Price to Book Value of 2.34. In comparison to peers, Littelfuse's P/E ratio of 30.08 is higher than Universal Display Corp.'s 28.20 and significantly lower than Advanced Energy Industries, Inc.'s 43.33, highlighting its relative valuation challenges within the industry.
While Littelfuse has shown a strong performance with a 1-week return of 6.03% compared to the S&P 500's 1.70%, its longer-term returns are lagging, particularly over 3 years and 5 years, where it returned 29.93% and 37.43%, respectively, against the S&P 500's 81.19% and 91.29%. This suggests that despite recent gains, the stock may not be a compelling investment relative to broader market performance.