Bank of America stock is trading lower Wednesday after the financial firm reported earnings but Wall Street isn't worried. Here's why.

Bank of America is scheduled to post its fourth-quarter earnings report before the opening bell Thursday, with analysts expecting rising revenue and profits.

Bank of America's Wall Street businesses drove a surge in profit last quarter, in common with peers. Here are the highlights: BofA's profit more than doubled to $6.67 billion. That amounted to $0.82 a

Bank of America is expected to benefit from a boost in investment banking and trading activity in the fourth quarter. Last month, CEO Brian Moynihan told investors that his firm would hit guidance for NII of about $14.