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

Aug. 15, 2019 BO +6.22%
May 16, 2019 BO +1.43%
Feb. 19, 2019 BO +2.21%
Nov. 15, 2018 BO -1.96%
Aug. 16, 2018 BO +9.33%
May 17, 2018 BO -1.90%
Feb. 20, 2018 BO -10.17% Biggest DOWN
Nov. 16, 2017 BO +10.89% Biggest UP
Aug. 17, 2017 BO -1.58%
May 18, 2017 BO +3.22%
Feb. 21, 2017 BO +2.99%
Nov. 17, 2016 BO -3.08%

Avg (+ or -) 4.58%
Bias 1.47%, positive bias on earnings.

With stock at 120.00 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 115.34 to 124.66
Based on AVERAGE one-day move over last 12 quarters: 114.50 to 125.50
ased on MAXIMUM one-day move over last 12 Q’s (10.9%): 106.93 to 133.07
Based on DOWN max only (-10.2%): 107.80

Open to requests for other symbols.