This period is a confluence of several key Fibonacci time dates, which is why it is getting a lot of attention.
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Fibonacci series: 1,1,3,5,8,13,21,34,55,89,144,233...
For the S&P, Wednesday May 7th is :
1) the 144th trading day from Oct 10, including Oct 10.
2) 144 + 55 = 189 trading days from July 24, which is
exactly 2.618 X # days from July 24 low to Oct low.
3) 2.618 x the number of trading days from the October 10
low to December 2 high.
As the market made key highs and lows in the last year on exact fibonacci cycles, and that various indicators are at levels associated with past overbought and reversals points, it behooves one to pay attention to this week as a possible turning point.