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

July 24, 2019 AC -13.61% Biggest DOWN
April 24, 2019 AC -4.26%
Jan. 30, 2019 AC -0.56%
Oct. 24, 2018 AC +9.13%
Aug. 1, 2018 AC +16.18% Biggest UP
May 2, 2018 AC -5.54%
Feb. 7, 2018 AC -8.62%
Nov. 1, 2017 AC -6.79%
Aug. 2, 2017 AC +6.50%
May 3, 2017 AC -5.00%
Feb. 22, 2017 AC -6.40%
Oct. 26, 2016 AC +0.87%

Avg (+ or -) 6.96%
Bias -1.51%, negative bias on earnings.

With stock at 252.50 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 232.19 to 272.81
Based on AVERAGE one-day move over last 12 quarters: 234.94 to 270.06
Based on MAXIMUM one-day move over last 12 Q’s (16.2%): 211.65 to 293.35
Based on DOWN max only (-13.6%): 218.13

Open to requests for other symbols.