In 2008 I had no trailing stops on my stocks, I lost a bunch. I now put a trailing stop % on my stocks. I use either 10% or 20%. LGND was recommended, here, it took off. Put a trailing stop on it of 10%. In one day it dipped below the 10% and was sold. Now in three days it is back up to what it was before the decrease. I did buy it back but lost some profit. What philosophy should I take in determining a trailing stop. Thanks.