Overall, MA is still a good company to invest for a longterm. Lehman Brothers re-iterate the company price target at $117 up from $114. Hopefully, all panic sellings will end soon. Smart investors always win just because they know how to control their emotions. Just an opinion.
Part of controlling your emotions is getting out before a drop and then getting back in later when it makes sense. Not just holding onto it like a crazy person claiming other people are wrong like many are doing.
Sorry but you are wrong! A normal investor must not trade- imho, cause thats a game he will loose for sure. How should I know when there will be a drop and when its good to get in back. That's nonsense. Maybe possible at a volatile stock like MA, but quite dangerous here. It is the longterm view you should focus on and there MA is a stock to own, for me.