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

May 1, 2019 AC +0.89%
Jan. 30, 2019 AC -1.29%
Nov. 7, 2018 AC -8.16% Biggest DOWN
July 25, 2018 AC +7.00%
April 25, 2018 AC +1.44%
Jan. 31, 2018 AC -2.12%
Nov. 1, 2017 AC +2.58%
July 19, 2017 AC -4.94%
April 19, 2017 AC +0.09%
Jan. 25, 2017 AC -5.00%
Nov. 2, 2016 AC -0.20%
July 20, 2016 AC +7.36% Biggest UP

Avg (+ or -) 3.42%
Bias -0.20%, no significant bias on earnings.

With stock at 75.00 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 71.15 to 78.85
Based on AVERAGE one-day move over last 12 quarters: 72.43 to 77.57
Based on MAXIMUM one-day move over last 12 Q’s (8.2%): 68.88 to 81.12
Based on UP max only (+7.4%): 80.52

Open to requests for other symbols.