My $SPX concerns: (1) lack of a H/H, (2) several rejections at falling 50 dma, &amp; (3) NYSE cumulative A/D weakening since 4/9.  All these can still turn, but really need to avoid a L/L at 2737 which is also the rising 20 d ema.  Below there 2640 would be a key level. to hold.