M&A activity in the United States also plunged 40% to $456 billion in the second quarter.
Trading, however, was a bright spot, with total markets revenue up 15%, with fixed income and equity trading both recording jumps.
The bank reported a 19% increase in net interest income (NII) to $15.2 billion. For the year, it expects NII, excluding markets, to be more than $58 billion, up from its earlier forecast of $56 billion.
Rate hikes benefit big lenders by increasing what they earn from loans, but rapid increases could slow the economy, leaving consumers to absorb higher borrowing costs, in turn slowing loan growth for banks.