Robert Way Citigroup Inc. (NYSE:C) is scheduled to release its second-quarter earnings report this Friday, July 12. As such, I decided to revisit my opinion of the stock, especially given the volatility baked into the banking industry. C Earnings Estimate (Seeking Alpha) I covered Citigroup's stock in March when I argued it was an undervalued asset. Although my prediction was somewhat correct, Citigroup's stock has shown moderate gains ever since. Pearl Gray's Previous Rating (Seeking Alpha) After further i ...