Cash and Securities Segregated Under Federal Regulations and Other Requirements

6 Months Ended

Jun. 30, 2018

Brokers and Dealers [Abstract]

Cash and Securities Segregated Under Federal Regulations and Other Requirements

Cash and Securities Segregated Under Federal Regulations and Other Requirements

As of June 30, 2018 and December 31, 2017, $1.3 billion and $0.8 billion, respectively, of U.S. Treasury Bills were segregated in a special reserve bank custody account for the exclusive benefit of our brokerage customers under Rule 15c3-3 of the Exchange Act.