There are also traders who add to losing positions either in a pairs trading or P2 type manor. P2 has discussed his ideas here and I've talked to another tradres who does something similar. He only adds intraday, only when his position is going against him, does not carry positions overnight, and is right >85% of the time. Many of the wins are small wins when he hits his profit target. After his second add-on he looks for break-even only trades. About 1-in-7 trades he hits his max stop loss for a position (calculated in advance as function of volatility after his 4th add-on) and it hurts. This position doesn't have a simple risk:reward calculation because of the nature of the add-on, but if you look at each complete trade, the avg. loss is much larger than avg. winner and this guy is mid six figures trader. I personally cannot trade this way, but it works for him.
