Where have all the traders gone? That’s been a common refrain in the last few years for many market watchers. These folks worry that lower trading volumes for U.S. stocks might indicate a disturbing lack of confidence in the market, even as stock prices march higher and the Dow Jones Industrial Average DJIA -0.67% cracks 17,000. “There seems to be no excitement in the market anymore,” said Peter Cardillo, chief market economist at Rockwell Global Capital. There certainly are far fewer shares trading hands than a few years ago, as shown in this chart. Average daily trading volume, tallied by month, was just 5.8 ... (full story)