4-18-2018 8:04 am pre market is up, SPY trade +0.83 @ 271.12, FB down-1.50 @ 167.10, AAPL flat @ 178.20. NVDA down -1.96 @ 135.58. What to look for .. after market open, if the SPY (@ 271.05) fall from the gate right a way. SPY should come down to 270.50- 270.28 to fill the...