Share your insights or perspective on the financial matter presented in the input.

Is there any emprical research done on 'adding to a loser'
It works if after the price has halved and you buy more the price then rises, however if you are attempting to do this you are basing you "doubling down" on hope, and if you are basing a purchase on hope you are gambling. In many cases if the price has halved it could be because there is something very wrong with the company, so the price could easly half again. In that case it hasn't worked. You are better off waiting to see if the company makes a turn around and starts improving. Wait for confirmation that the stock price is heading back up before buying.