You know what that means....... A day late and a $ short Nice call nonetheless, I hope you were able to jump back in.
It's a 50% retracement from August lows (1385) to most recent highs (1586.75). That is from the ES; I prefer SPX for calculations.
that 1385 lo was on 8/16 & a likely inflection point for a pop was the major reason for 1/2 cover as well as needing to lock in some gains on a possible intraday capitulation move. 85 = 50%
sure looks like a massive double top on daily.. forebodes long term bear progressive pattern going into early next year.