Directional Bias For The Day: S&P Futures are down Drifting lower in steps since 3:00 PM on Monday In the lower half of a horizontal channel with high of 2585.50 and low of 2571.50 Odds are for a sideways to down day – watch for break above 2580.50 and break below 2571.50 for change of fortunes Key economic data due: Core PPI (0.4%…