Is Exponent, Inc. overvalued or undervalued?

As of 1 August 2025, Exponent, Inc. has moved from expensive to very expensive in its valuation grade, indicating a significant increase in perceived overvaluation. The company is currently overvalued, with a P/E ratio of 54, a Price to Book Value of 11.28, and an EV to EBITDA ratio of 33.13. In comparison, peers such as MasTec, Inc. have a P/E of 57.22 and APi Group Corp. shows a notably high P/E of 87.46, while TopBuild Corp. is relatively more attractive with a P/E of 24.98.
The stock has underperformed against the S&P 500, with a year-to-date return of -21.26% compared to the S&P 500's 12.22%, and a one-year return of -35.33% versus the index's 17.14%. This underperformance reinforces the notion that Exponent, Inc. is overvalued in the current market context.