Sleepy trade despite the almost 20 point range on the SP futures, and on a Friday the 13th no less.
Light volumes and trader's games.
SP 500
NDX 
Gold
"You are the very cause of your ignorance, yourselves. You put away the light, yourselves; you first pluck out both your own eyes, yourselves; and after that other men’s too, so that the blind may lead the blind, until you both fall into the pit.”
Thomas More, The Sadness of Christ (Gethsemane), Tower of London, 1535