你還是到一邊歇著吧。下麵說的情況前提是如果有人400買了還“hold” 到現在. 不要斷章取義

If someone is willing to hold a 400 entry price stock for 3 years, he/she would be an idiot for not DCA down. 

If he/she lost confidence in stock, it would have been sold at 300, or 250, or 200 long ago, instead of "still holding" the shares.

So many clueless post on this forum, it just makes people laugh