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

May 29, 2019 AC -5.11%
Feb. 26, 2019 AC +8.20%
Nov. 29, 2018 AC -1.76%
Sept. 6, 2018 AC +3.28%
June 4, 2018 BO -0.52%
Feb. 26, 2018 AC +2.31%
Nov. 20, 2017 AC +4.82%
Aug. 31, 2017 AC +10.53%
May 31, 2017 AC +17.20% Biggest UP
Feb. 28, 2017 AC -24.15% Biggest DOWN
Nov. 21, 2016 AC -13.24%
Aug. 30, 2016 AC -7.16%

Avg (+ or -) 8.19%
Bias -0.47%, slight negative bias on earnings.

With stock at 200.00 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 184.58 to 215.42
Based on AVERAGE one-day move over last 12 quarters: 183.62 to 216.38
Based on MAXIMUM one-day move over last 12 Q’s (24.2%): 151.70 to 248.30
Based on UP max only (+17.2%): 234.40

Open to requests for other symbols.