Is MasTec, Inc. overvalued or undervalued?

As of 17 October 2025, the valuation grade for MasTec, Inc. has moved from fair to expensive. The company appears to be overvalued based on its high P/E ratio of 60, a Price to Book Value of 5.55, and an EV to EBITDA of 18.89. In comparison to its peers, MasTec's P/E ratio is significantly higher than TopBuild Corp., which has a P/E of 24.98, and even higher than the industry average.
Despite the high valuation metrics, MasTec has demonstrated strong performance with a year-to-date return of 48.27%, significantly outperforming the S&P 500's return of 13.30% over the same period. This performance, while impressive, does not negate the overvaluation indicated by the current ratios.