Directional Bias For The Day: Futures are mixed to little changed Drifting lower since 5:00 AM high of 2446.50 Odds are for a sideways to an up day; watch for break below 2437.25 for a change of fortunes; Key economic data due: PPI (est. 0.0%) and Core PPI (est. 0.2%) at 8:30 AM Unemployment Claims (est. 245K) at 8:30 AM Fed Chair Yellen’s testimony at 10:00…