Honestly I don't follow C, but one concern for all banks is the undisclosed junk on the balance sheet from the real estate bubble that seems to keep returning in one form or another. Techically speaking, C has formed a massive ascending triangle, very bullish formation. So the reason the stock may have fallen was to return back to the continuation fo the formation, $53.74. Anything above that is a breakout and stocks CAN return to test their strength and confirm that move. Good news, looks to me that the 50 day MA is serving two purposes, one is being a moving average (50 is weak) and the second is that it is appears to be the bottom of the ascending traingle formation. So any level around $52 or below is a good level to add. $47.64 appears to be a level to greatly add IF she ever gets that low ( market correction).