Well, to each his own. Maybe you can buy more at bottom to average your holdings down. Either way, the chunk that you bought today was a poor decision in my opinion. Look at a 20 year chart of major averages (DJIA, S&P, etc) then look at a 20 year chart of UNP. We are in a major fed induced bubble in all major markets. We have NOT reached a bottom.....not by a long shot. Here's to hoping that I am wrong though. Dont trust me though.....I only work for this company and see its management errors on a DAILY BASIS.