Directional Bias For The Day: S&P Futures are lower Within a narrow horizontal channel – between 2507.50 and 2505.50 – since 6:30 PM on September 28 Odds are for a sideways – watch for break above 2508.25 and below 2504.50 for change of fortunes  Key economic data due: Core PCE Price Index (0.1% vs. 0.2% est.) at 8:30 AM Personal Spending (0.1% vs. 01.%…