SPX touched the bottom band of Bollinger bands, a rebound is expected. It could be as high as 1,410 which is a sell opportunity. Probably it is the last chance to lock-in profits. If SPX continues to go down, buy in 15% at 1,387; 35% at 1,366 and all in at 1,340. Any interim rebound before 1,340 is to sell unless rebound is decisive.