Well, wonder no more! Jes Staley presented a breakdown at their investor day earlier this week.
It’s pretty interesting reading but don’t assume that this is the full story. As pointed out by Bloomberg here “The bank’s description of high-volume products didn’t account for all of its trading revenue. JPMorgan reported an average of $3.8 billion from trading in fixed-income products, currencies and commodities, and $1.2 billion from equities over the last four quarters. The product revenue listed in the presentation totaled $2.3 billion in fixed-income and $675 million in equities.”