Is AerCap Holdings NV overvalued or undervalued?

As of 17 October 2025, AerCap Holdings NV has moved from a fair to an expensive valuation grade. The company appears to be overvalued, with a P/E ratio of 11, an EV to EBITDA ratio of 10.15, and a Price to Book Value of 1.24. In comparison, SoFi Technologies, Inc. has a significantly higher P/E ratio of 54.79, while Synchrony Financial, which is rated very attractive, has a P/E of 15.06, indicating that AerCap is not competitively priced within its industry.
Despite the overvaluation, AerCap has shown strong performance with a year-to-date return of 25.84%, significantly outpacing the S&P 500's 13.30% return in the same period. However, the stock's recent weekly and monthly returns of -0.36% and -0.37%, respectively, suggest a potential downturn that investors should consider.