As of September 30, 2016, Ameritrade had 6,950,000 funded customer accounts and client assets of $773.8 billion [REF].
In fiscal year 2016, the company derived 41.2% of its revenues from commissions and fees including fees for order flow, 27.8% of its revenues from TD Bank for investment of idle cash balances, 17.9% of revenues from interest, 11.3% from investment product fees, and 1.8% from other sources [REF].