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

Nov. 7, 2019 AC +12.29%
Aug. 7, 2019 AC -15.29%
May 9, 2019 AC +5.04%
Feb. 21, 2019 AC +26.36% Biggest UP
Nov. 6, 2018 AC -26.92% Biggest DOWN
Aug. 6, 2018 AC -14.77%
May 7, 2018 AC -1.44%
Feb. 8, 2018 AC -2.67%
Nov. 7, 2017 AC +2.67%
Aug. 8, 2017 AC -9.05%
May 4, 2017 AC +9.29%
Feb. 7, 2017 AC -6.37%

Avg (+ or -) 11.01%
Bias -1.74%, negative bias on earnings.

With stock at 53.50 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 47.10 to 59.90
Based on AVERAGE one-day move over last 12 quarters: 47.61 to 59.39
Based on MAXIMUM one-day move over last 12 Q’s (26.9%): 39.10 to 67.90
Based on UP max only (+26.4%): 67.60

Open to requests for other symbols.