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YMH1, Stretch, 1.618% and 2.618% reversals


11 January YMH1 pivot point, 11578. Stretch calculation 26 = X, 2.618X = 42 and 4.25X= 68. Open, 11585 was reversed at the early A session low print, 11575. 11575 + 2.618X = 11543. 11652 high today.
Rally failure from the high print, 11652 - 2.618X = 11584. 11582 was the low reversal, i.e., the last rotation higher going into the close. 11582+ 1.618X = 11624. 11627 was the high going into the close.
Summary:
Open low, 11575 + 2.618% of the Stretch = 11643 (9 pts below high).
11652 - 2.618% of the Stretch = 11584 (2 pts above pullback low).
11582 + 1.618% of the Stretch = 11624 (3 pts below bounce high going into the close). 11 January settle: 11611.
Hunter, pardon my ignorance, but how do you come up with the stretch calculation of 26 ? thanks !