Goldman Sachs' quarterly profit jumped 78%, handily beating market expectations, as the Wall Street bank earned more from bond trading and its expenses fell.
Revenue from trading fixed income, commodities and currencies (FICC) rose 20% to $1.93 billion in the second quarter.
Total revenue from trading rose 2% to $3.68 billion.
Goldman's total operating expenses fell 25.5% to $5.47 billion.
The bank, like other Wall Street firms, has been focusing on cutting costs as concerns about slowing growth in China and other major markets discourage dealmaking and trading.
"Despite the uncertainty created by Brexit, we achieved solid results," Goldman's chief executive Lloyd Blankfein said in a statement.
Investment banking revenue, which includes income from advising on deals and underwriting bond and stock offerings, fell 11% to $1.79 billion.
Global investment banking fees for the industry fell by nearly a quarter in the first half of 2016 as volatility hit capital markets and dealmaking, according to Thomson Reuters data.
Net income rose to $1.63 billion, or $3.72 per share, in the quarter ended June 30.
This was up from $916m, or $1.98 per share, a year earlier, when Goldman set aside $1.45 billion for regulatory and mortgage-related legal settlements.
Analysts on average had expected earnings of $3 per share, according to Thomson Reuters.
Goldman's arch rival, Morgan Stanley, reports quarterly results tomorrow.
