Subscriber's Comment - Bank earnings hit by rate contraction, Argentina dollar deposits jump, oil extends breakdown.

JPMorgan Leads Bank-Stock Slump After Tempering Revenue Optimism – This article from Bloomberg may be of interest. Here is a section:

Net interest income — the difference between what banks earn on their assets and what they pay on debts — surged to a record at the four largest lenders last year on the back of higher interest rates. But with expectations…