The transfer agent and registrar for the Interactive Brokers Group, Inc. (IBKR) shares of our common stock is:
Computershare Trust Company, N.A.
1-800-662-7232
1-781-575-4238 (outside the U.S.)
The transfer agent and registrar for the Interactive Brokers Group, Inc. (IBKR) shares of our common stock is:
Computershare Trust Company, N.A.
1-800-662-7232
1-781-575-4238 (outside the U.S.)