Stock Index Futures Edge Down

March SP500 is trading at 2272.75, down 1.75. March Nasdaq 100 is trading at 5137.50, down 11.00. March Russell 2000 is trading at 1355.9, down 4.00. March Dow Industrial futures are trading at 19790, down 26. Stock index futures are trading rangebound and on both sides of unchanged. Market chatter about U.S. economic data due out Friday and comments from policy makers regarding a variety of matters has kept buyers and sellers active. The Bureau of Labor Statistics (BLS) is scheduled to release payroll data Friday at 8:30 a.m. ET.