BOK Financial 

BOK Financial Corp is a financial institution based in Oklahoma that offers a broad range of nationally competitive financial products and services. The company operates through three main segments: Commercial Banking, Consumer Banking, and Wealth Management. Commercial Banking provides lending, treasury and cash management, and risk management services, and includes the TransFund EFT network. Consumer Banking focuses on retail lending, deposit services, and mortgage loan origination and servicing. Wealth Management engages mainly in brokerage and trading activities, particularly in U.S. government agency mortgage-backed securities and related derivatives. The company generates the majority of its revenue from the Commercial Banking segment.