years ago I was smart enough to buy 1200 shares of the leading sirna(short interfering ribonucleic acid) company called alnylam for around 8 doilars a share but stupid enough to sell it right before it temporarily went to 114 dollars a share. it would have been nice to have cleared 120k especially as broke as I am but as usual I was at the airport when my ship came in. did the same thing with isis which is the leading antisence company. I sold amgen for 54 dollars a share right before it hit 126 a share. I guess warren buffet is right. don't second guess yourself. buy a stock and hold it through thick and thin. I think that works well for a platform biotech with many shots on goal but companies like imuc and nwbo are one shot ponies. if they fail then the game is over and your money is lost. a day trader once told me that day traders never touch biotechs because they are too unpredictable. he said day traders don't do drugs.