SPX bullish divergence identified leading into today's session move to the upside. Intraday (65m) chart reflecting auctions higher into key ER from AMZN and AAPL after market close. Three bar play formation on 65m observed off day lows of 4189 to complete a gap fill. Moderately weakening VIX coupled with stronger internals in advancing over declining also noted. Levels over/under 4250 on watch for continuation/rejection. SPX is 4278.50 at time of published study.