BlackRock, Inc. (BLK) - Get Report is expected to report earnings of $6.28 a share on sales of $3.4 billion before the market opens on Wednesday, Jan. 16, based on a FactSet survey of 13 analysts. In the same period a year ago the company posted earnings of $6.24 a share on sales of $3.5 billion.

The stock has fallen 2.8% since the company last reported earnings on Oct. 16.

BlackRock is currently trading at a price-to-forward-earnings ratio of 15.1 based on the 12-month estimates of 16 analysts surveyed by FactSet.

Wednesday is a busy day for bank earnings with results due from PNC Financial Services Group Inc. (PNC) - Get Report Goldman Sachs Group (GS) - Get Report  and Bank of New York Mellon Corp. (BNY) - Get Report among others.

Among banks that have already reported, Wells Fargo (WFC) - Get Report managed to beat estimates in the latest quarter, but saw its shares fall after CEO Tim Sloan said the financial giant will likely continue to operate under Federal Reserve sanctions through the end of the year.

JPMorgan Chase (JPM) - Get Reportmissed estimates for the first time in four years on weaker-than-expected trading revenue and higher costs for loan-loss reserves.

Notwithstanding their immediate challenges, Real Money Pro columnist Doug Kass says banks are a "must own" for the long term and may be the most attractively valued industry group in the S&P index. Find out how you can read Doug's comments here.

Goldman Sachs Group and JPMorgan Chase are holdings in Jim Cramer's Action Alerts portfolio. Want to be alerted before Jim Cramer buys or sells GS or JPM? Learn more now