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

March 14, 2019 BO -7.49%
Dec. 4, 2018 BO -6.80%
Aug. 30, 2018 BO -0.97%
May 31, 2018 BO -9.36%
March 15, 2018 BO +4.75%
Dec. 7, 2017 BO +2.77%
Aug. 31, 2017 BO -5.43%
June 1, 2017 BO +6.54% Biggest UP
March 16, 2017 BO +0.53%
Dec. 1, 2016 BO -4.96%
Aug. 25, 2016 BO -17.62% Biggest DOWN
May 26, 2016 BO +4.61%

Avg (+ or -) 5.99%
Bias -2.79%, negative bias on earnings.

With stock at 119.00 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 112.81 to 125.19
Based on AVERAGE move over last 12 quarters: 111.88 to 126.12
Based on MAXIMUM move over last 12 Q’s (17.6%): 98.03 to 139.97
Based on UP Max only (+6.5%): 126.78

Open to requests for other symbols.