#Earnings $BABA reports tomorrow morning. Below are details on earnings one-day moves over the last 12 quarters.

Nov. 1, 2019 BO -0.11%
Aug. 15, 2019 BO +3.02%
May 15, 2019 BO +1.57%
Jan. 30, 2019 BO +6.33% Biggest UP
Nov. 2, 2018 BO -2.41%
Aug. 23, 2018 BO -3.15%
May 4, 2018 BO +3.52%
Feb. 1, 2018 BO -5.90% Biggest DOWN
Nov. 2, 2017 BO -0.68%
Aug. 17, 2017 BO +2.77%
May 18, 2017 BO +0.45%
Jan. 24, 2017 BO +3.06%

Avg (+ or -) 2.75%
Bias 0.71%, positive bias on earnings.

With stock at 221.50 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 210.84 to 232.16
Based on AVERAGE one-day move over last 12 quarters: 215.41 to 227.59
Based on MAXIMUM one-day move over last 12 Q’s (6.3%): 207.48 to 235.52
Based on DOWN max only (-5.9%): 208.43

Open to requests for other symbols.