#Earnings $AMZN reports tonight. Below are details on earnings one-day moves over the last 12 quarters.

July 25, 2019 AC -1.55%
April 25, 2019 AC +2.54%
Jan. 31, 2019 AC -5.38%
Oct. 25, 2018 AC -7.81% Biggest DOWN
July 26, 2018 AC +0.51%
April 26, 2018 AC +3.60%
Feb. 1, 2018 AC +2.87%
Oct. 26, 2017 AC +13.21% Biggest UP
July 27, 2017 AC -2.48%
April 27, 2017 AC +0.71%
Feb. 2, 2017 AC -3.54%
Oct. 27, 2016 AC -5.13%

Avg (+ or -) 4.11%
Bias -0.20%, no significant bias on earnings.

With stock at 1,765.00 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 1,697.56 to 1,832.44
Based on AVERAGE one-day move over last 12 quarters: 1,692.44 to 1,837.56
Based on MAXIMUM one-day move over last 12 Q’s (13.2%): 1,531.84 to 1,998.16
Based on DOWN max only (-7.8%): 1,627.15

Open to requests for other symbols.