Just ran Mr.Market's "Always Win by Never Booking a Loss" portfolio. For trading since Jan 1 2002, he is down a "summed" percentage of 12.26% over 23 positions for an average position loss of 0.533%, excluding commissions. His biggest loser is ACMR at ~ -48% and over half of his open positions are worse than 25% down. He'd have had more success shoving his investment money into an empty protein powder can and burying it in the backyard. Of course, this assumes that he invested exactly the same amount of money in each position. That seemed best, since we have no indication of the trade sizes.