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

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%
May 26, 2016 AC -12.36%
Feb. 25, 2016 AC +5.20%

Avg (+ or -) 8.54%
Bias -1.32%, negative bias on earnings.

With stock at 233.00 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 217.69 to 248.31
Based on AVERAGE move over last 12 quarters: 213.09 to 252.91
Based on MAXIMUM move over last 12 Q’s (24.2%): 176.73 to 289.27

Open to requests for other symbols.