It has been quite a busy week for Bank of America, with the company on Monday announcing that it expected its fourth-quarter earnings to be "modestly positive," as a result of its mortgage putback settlement with Fannie Mae ( FNMA) and because of its participation in an $8.5 billion mortgage foreclosure settlement with federal regulators. Then on Wednesday, Credit Suisse analyst Moshe Orenbuch downgraded Bank of America to a neutral rating from an "Outperform" rating, even though he raised his price target for the shares by a dollar to $12.00. The analyst said that the stock's "current valuation appears to be ahead of the company's near to intermediate-term performance and appears to be discounting significantly faster improvements in efficiency than we would be expecting." Orenbuch added that "At its current valuation, the shares appear to be discounting at least a 16% improvement in costs over the next year vs. our estimate of 10%," and that "despite the announced mortgage servicing sales, it will take until 2014 for the annual run-rate of expense saves. Separately, we think it will be hard for Bank of America to grow revenues faster than the 'average' bank." Interested in more on Bank of America? See TheStreet Ratings' report card for this stock.