KANSAS CITY, Mo., April 21, 2011 /PRNewswire/ -- BATS Global Markets, a global stock market operator, reports the BATS 1000 Index (Ticker: BATSK) advanced 1.4% for the trading week ending April 21. The U.S. markets will be closed on Friday, April 22 in observance of Good Friday. The S&P 500 Inde