Is APi Group Corp. overvalued or undervalued?

As of 31 October 2025, the valuation grade for APi Group Corp. has moved from expensive to very expensive, indicating a significant increase in perceived overvaluation. The company is currently overvalued, with a P/E ratio of 64, a Price to Book Value of 4.59, and an EV to EBITDA of 20.32. In comparison, peers such as MasTec, Inc. have a P/E of 57.22, while TopBuild Corp. is more reasonably valued with a P/E of 24.98.
Despite strong performance, with a year-to-date return of 53.54% compared to the S&P 500's 16.30%, the elevated valuation ratios suggest that APi Group Corp. may not sustain such growth relative to its current price. The high PEG ratio of 4.06 further reinforces the notion of overvaluation, as it indicates that the stock price may not be justified by its earnings growth potential.