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

May 27, 2020 AC -4.64%
Feb. 12, 2020 AC -9.27%
Nov. 13, 2019 AC +3.17%
Aug. 14, 2019 AC +3.93%
May 22, 2019 AC -8.10%
Feb. 13, 2019 AC -5.47%
Nov. 14, 2018 AC -11.72% Biggest DOWN
Aug. 15, 2018 AC -3.58%
May 23, 2018 AC +1.93%
Feb. 14, 2018 AC -4.89%
Nov. 15, 2017 AC +15.91% Biggest UP
Aug. 16, 2017 AC -6.72%

Avg (+ or -) 6.61%
Bias -2.45%, negative bias on earnings.

With stock at 42.00 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 38.61 to 45.39 (+/- 8.1%)
Based on AVERAGE one-day move over last 12 quarters: 39.22 to 44.78
Based on MAXIMUM one-day move over last 12 Q’s (15.9%): 35.32 to 48.68
Based on DOWN max only (-11.7%): 37.08

Open to requests for other symbols.