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

Sept. 26, 2019 AC -11.09% Biggest DOWN
June 25, 2019 AC +13.34% Biggest UP
March 20, 2019 AC +9.61%
Dec. 18, 2018 AC -7.91%
Sept. 20, 2018 AC -2.86%
June 20, 2018 AC +0.83%
March 22, 2018 AC -7.99%
Dec. 19, 2017 AC +4.02%
Sept. 26, 2017 AC +8.51%
June 29, 2017 AC -5.11%
March 23, 2017 AC +7.40%
Dec. 21, 2016 AC +12.68%

Avg (+ or -) 7.61%
Bias 1.79%, positive bias on earnings.

With stock at 53.00 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 49.56 to 56.44
Based on AVERAGE one-day move over last 12 quarters: 48.97 to 57.03
sed on MAXIMUM one-day move over last 12 Q’s (13.3%): 45.93 to 60.07
Based on DOWN max only (-11.1%): 47.12

Open to requests for other symbols.