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

July 16, 2019 AC +0.91%
April 16, 2019 AC +4.77%
Jan. 15, 2019 AC +6.35%
Oct. 16, 2018 AC +5.95%
July 17, 2018 AC +8.78% Biggest UP
April 17, 2018 AC +4.81%
Jan. 23, 2018 AC -11.44%
Oct. 18, 2017 AC -12.07% Biggest DOWN
July 18, 2017 AC -5.90%
April 17, 2017 AC -4.26%
Jan. 17, 2017 AC +0.35%
Oct. 17, 2016 BO -0.31%

Avg (+ or -) 5.49%
Bias -0.17%, no significant bias on earnings.

With stock at 87.50 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 83.43 to 91.57
Based on AVERAGE one-day move over last 12 quarters: 82.69 to 92.31
Based on MAXIMUM one-day move over last 12 Q’s (12.1%): 76.94 to 98.06
Based on UP max only (+8.8%): 95.18

Open to requests for other symbols.