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

Oct. 24, 2018 AC +6.10%
July 25, 2018 AC +1.07%
April 25, 2018 AC +0.89%
Jan. 24, 2018 AC -5.05%
Oct. 25, 2017 AC +3.97%
July 26, 2017 AC -7.16%
April 26, 2017 AC -7.50%
Jan. 25, 2017 AC -8.25% Biggest DOWN
Oct. 26, 2016 AC +9.57% Biggest UP
July 20, 2016 AC +0.32%
April 20, 2016 AC +5.53%
Jan. 20, 2016 AC -0.56%

Avg (+ or -) 4.66%
Bias -0.09%, no significant positive or negative bias.

With stock at 159.00 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 149.10 to 168.90
Based on AVERAGE move over last 12 quarters: 151.58 to 166.42
Based on MAXIMUM move over last 12 Q’s (9.6%): 143.78 to 174.22

Open for requests on other symbols.