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

Nov. 21, 2019 AC +10.76%
Aug. 21, 2019 AC -7.83% Biggest DOWN
May 23, 2019 AC -7.32%
Feb. 28, 2019 AC -0.90%
Nov. 29, 2018 AC +9.93%
Aug. 23, 2018 AC +14.81%
May 24, 2018 AC -5.20%
March 1, 2018 AC +9.26%
Nov. 16, 2017 AC +17.89% Biggest UP
Aug. 24, 2017 AC +8.47%
May 25, 2017 AC -6.97%
Feb. 23, 2017 AC -3.23%

Avg (+ or -) 8.55%
Bias 3.31%, positive bias on earnings.

With stock at 150.00 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 135.06 to 164.94
Based on AVERAGE one-day move over last 12 quarters: 137.18 to 162.82
Based on MAXIMUM one-day move over last 12 Q’s (17.9%): 123.17 to 176.84
Based on UP max only (-7.8%): 138.26

Open to requests for other symbols.