Does anyone trade multiple positions? like 30 - 100 different open positions? If you do, how do you efficiently manage them? There are several very successful traders at Worldco who does this but, of course, they won't tell me their secrets. I do know they have both long and short positions....and as to how they pick the stock, I don't know. Also, if the market turns around on them, how do they manage to curtail their losses if caught in the wrong side of the market? They do have a bias towards how the markt is doing...but what is amazing about them is that their down days are very small...and each of those down days are very small losses comapred to their winning days.