You certainly don’t need to turn to Subtraction.com to hear this news, but I thought I should mention that the market had a miserable day anyway. The Dow Jones fell a dizzy 436 points, while the NASDAQ fell below the psychologically frightening 2000 mark. A friend of mine, using MapStation from SmartMoney, sent me this visualization of what happened today with the NASDAQ. Red indicates equities that lost ground today. The one green bar is Compuware (CPWR), who must have cut a deal with the devil or something.