BATS exchange...BATS is one of several dozen relatively new companies that offer high-speed, low-cost electronic stock trading as an alternative to the NYSE and Nasdaq. Making up about 12 percent of all U.S. stock trading, it's the third-largest stock exchange in the country behind NYSE and Nasdaq http://www.batstrading.com/ http://www.greenbaypressgazette.com/usatoday/article/38873861?odyssey=mod%7Cnewswell%7Ctext%7CBusiness%7Cs