Is Interactive Brokers Group, Inc. overvalued or undervalued?

As of 17 October 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 of 2.16. In comparison, State Street Corp. has a P/E of 16.53, while LPL Financial Holdings, Inc. has a P/E of 34.83, indicating that Interactive Brokers is trading at a premium relative to some peers.
In terms of recent performance, Interactive Brokers has shown a year-to-date return of 49.95%, significantly outperforming the S&P 500's return of 13.30% over the same period. However, over the longer term, the company has lagged behind the S&P 500, particularly in the 3-year and 5-year returns. Overall, while the stock is currently fairly valued, its high P/E ratio suggests that investors are expecting significant future growth.