Directional Bias For The Day: S&P Futures are higher; moving sideways since 10:30 PM on April 9 Odds are for a sideways move from current level with up bias – watch for break above 2656.25 and below 2640.50 for change of fortunes Key economic data due PPI (0.3% vs. 0.1% est.) at 8:30 AM Core PPI (0.3%…