That's justwhathappenswhenJohn Candy, stuck on a backed-up freeway and inarush, commandeers a 16-wheeler and turns theinterstateintoamonster-truck show.
JohnWheeler, senior manager of equity trading at American Century mutual funds, figures the current system imposes a 0.5% trading cost (one-way) on big orders, between commissions, spreads and the impact such orders themselves have on prices.