Related Parties (Tables)

3 Months Ended

Mar. 31, 2017

Related Party Transactions [Abstract]

Summary of Balances and Transactions with Related Parties or Their Affiliates

As of the date and period indicated below, the Company had the following balances and transactions with its related parties or their affiliates (in thousands):

	For the three months ended March 31,
Statements of Operations	2017		2016
Revenues
Commissions and fees	$	1,868	$	6,663
Trading revenues, net	791		477
Interest, net	119		103
Total revenues from related parties	$	2,778	$	7,243
Expenses
Execution and clearance fees(1)	$	313	$	880
Communications and data processing	5,610		3,206
Payment for order flow	—		5
Collateralized financing interest	86		78
Other expense	—		5
Total expenses incurred with respect to related parties	$	6,009	$	4,174

⁽¹⁾  Represents net volume based fees paid or received by KCG for taking or providing liquidity to related trading venues. Volume based fees will vary period to period based on usage.

Statements of Financial Condition	March 31, 2017		December 31, 2016
Assets
Securities borrowed	$	17,754	$	5,293
Receivable from brokers, dealers and clearing organizations	2,134		2,106
Other assets	16		62,906
Liabilities
Securities loaned	$	2,063	$	2,594
Payable to brokers, dealers and clearing organizations	45		188
Accrued expenses and other liabilities	122		3,708