Directional Bias For The Day: S&P Futures are higher; moving higher since 8:30 PM on Monday in steps Daily and weekly trends are down Odds are for an up day with elevated volatility – watch for break below 2637.50 for change of fortunes Key economic data due: S&P/Case-Shiller Composite-20 HPI (est. 5.0%; prev. 5.0%) at 9:00 AM CB Consumer Confidence (est. 125; prev. 128.1) at 10:00…