Is Janus International Group, Inc. overvalued or undervalued?

As of 17 October 2025, the valuation grade for Janus International Group, Inc. has moved from attractive to very expensive, indicating a significant shift in its perceived value. Based on the current metrics, the company appears overvalued, with a P/E ratio of 21, an EV to EBITDA of 9.15, and a Price to Book Value of 2.18. In comparison to peers, Janus has a higher P/E ratio than A. O. Smith Corp. (26.10) and a lower EV to EBITDA than SPX Technologies, Inc. (25.04), suggesting that it is not competitively priced within its industry.
In terms of recent performance, Janus International Group has shown mixed returns, with a year-to-date return of 33.88%, significantly outperforming the S&P 500's 13.30% during the same period. However, over the longer term, its 3-year return of 11.44% and 5-year return of -3.81% starkly contrast with the S&P 500's 81.19% and 91.29% returns, respectively, reinforcing the notion that the stock may be overvalued given its lackluster long-term performance.