W earnings analysis

#Earnings $W reports tomorrow morning. Below are details on earnings one-day moves over the last 12 quarters.

Feb. 22, 2019 BO +27.85% Biggest UP
Nov. 1, 2018 BO -12.81%
Aug. 2, 2018 BO +7.54%
May 2, 2018 BO +13.65%
Feb. 22, 2018 BO -22.71% Biggest DOWN
Nov. 2, 2017 BO -15.54%
Aug. 8, 2017 BO -6.26%
May 9, 2017 BO +20.73%
Feb. 23, 2017 BO -6.49%
Nov. 8, 2016 BO -4.13%
Aug. 9, 2016 BO -19.58%
May 9, 2016 BO +10.16%

Avg (+ or -) 13.95%
Bias -0.63%, tiny negative bias on earnings.

With stock at 165.00 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 145.60 to 184.40
Based on AVERAGE move over last 4 quarters: 141.98 to 188.02
Based on MAXIMUM move over last 4 Q’s (27.9%): 119.05 to 210.95
Based on DOWN max only (-22.7%): 127.53

Open to requests for other symbols.