Is Bel Fuse, Inc. overvalued or undervalued?

As of 7 November 2025, the valuation grade for Bel Fuse, Inc. has moved from fair to attractive, indicating a positive shift in its perceived value. The company appears to be undervalued, especially when considering its P/E ratio of 24, which is lower than the peer average of 38.21 for companies like TTM Technologies, Inc. and Vicor Corp., both of which are classified as expensive or attractive, respectively. Additionally, Bel Fuse's EV to EBITDA ratio stands at 16.31, which is competitive compared to peers such as Camtek Ltd. at 30.31.
Bel Fuse, Inc. has demonstrated impressive returns, with a year-to-date return of 95.87% compared to the S&P 500's 14.40%, and a remarkable 3-year return of 361.38% versus 76.76% for the index. This strong performance reinforces the notion that the stock is undervalued relative to its growth potential and market performance.