JPMorgan Chase (JPM) is out with fourth-quarter earnings on Friday prior to the market's open. Analysts expect the bank to post earnings of $1.43 a share on sales of $23.93 billion. "It should be a very good quarter for trading," said Jim Sinegal, Morningstar's banking analyst. "There's been a lot of optimism in capital markets." Sinegal also said the Fed's December rate increase and the rise in government bond yields in recent months will act as additional tailwinds for the bank.