Is Interactive Brokers Group, Inc. overvalued or undervalued?

As of 13 August 2025, the valuation grade for Interactive Brokers Group, Inc. has moved from expensive to fair. The company appears to be fairly valued based on its current metrics, with a P/E ratio of 113, a Price to Book Value of 19.89, and an EV to EBITDA ratio of 2.16. In comparison to peers, State Street Corp. has a P/E of 16.53, while LPL Financial Holdings, Inc. shows a P/E of 34.83, indicating that Interactive Brokers is relatively higher in terms of valuation ratios.
The stock has performed exceptionally well, with a year-to-date return of 46.99% compared to the S&P 500's 12.22%, and a one-year return of 99.48% versus the S&P 500's 17.14%. This strong performance reinforces the notion that the stock is fairly valued given its recent returns.