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

Aug. 1, 2019 AC -10.32%
May 2, 2019 AC -10.43%
Feb. 14, 2019 AC +9.62%
Nov. 1, 2018 AC +6.97%
Aug. 2, 2018 AC -5.26%
May 3, 2018 AC -8.51%
Feb. 15, 2018 AC -18.98% Biggest DOWN
Nov. 2, 2017 AC +11.21%
Aug. 3, 2017 AC +19.43% Biggest UP
May 4, 2017 AC +3.22%
Feb. 16, 2017 AC +18.85%
Nov. 3, 2016 AC +1.49%

Avg (+ or -) 10.36%
Bias 1.44%, positive bias on earnings.

With stock at 246.50 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 227.65 to 265.35
Based on AVERAGE one-day move over last 12 quarters: 220.97 to 272.03
Based on MAXIMUM one-day move over last 12 Q’s (19.4%): 198.61 to 294.39
Based on DOWN max only (-19.0%): 199.71

Open to requests for other symbols.