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

May 10, 2019 BO +0.30%
Feb. 20, 2019 AC +2.18%
Oct. 24, 2018 AC -14.77% Biggest DOWN
July 25, 2018 AC -3.48%
April 25, 2018 AC -3.22%
March 1, 2018 AC +5.14% Biggest UP
Nov. 9, 2017 AC -0.19%
July 26, 2017 AC -2.41%
April 26, 2017 AC -1.83%
Feb. 8, 2017 AC +5.03%
Oct. 26, 2016 AC -4.30%
July 27, 2016 AC -1.39%

Avg (+ or -) 3.69%
Bias -1.58%%, negative bias on earnings.

With stock at 140.50 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 134.14 to 146.86
Based on AVERAGE one-day move over last 12 quarters: 135.32 to 145.68
Based on MAXIMUM one-day move over last 12 Q’s (14.8%): 119.75 to 161.25
Based on UP Max only (+5.1%): 147.72

Open to requests for other symbols.

#doublecalendar