Interactive Brokers Group, Inc. 's ( IBKR - Free Report ) shares have rallied 41.8% in the past three months, outperforming the industry 's 20.3% growth and the S&P 500 Index's 13.1% rise. Moreover, IBKR's price performance has been better than that of its peers, Charles Schwab ( SCHW - Free Report ) and Tradeweb Markets Inc. ( TW - Free Report ). The Schwab stock has gained 14.8%, whereas shares of Tradeweb Markets have declined 2.2% in the same time frame.