ISRG Earnings Analysis

#Earnings $ISRG reports after the bell. Below are details on earnings 1-day moves over the last 12 quarters.

July 19, 2018 AC -0.86%
April 17, 2018 AC 8.17% (Biggest UP)
Jan. 25, 2018 AC -2.12%
Oct. 19, 2017 AC 3.39%
July 20, 2017 AC -4.55%
April 18, 2017 AC 6.36%
Jan. 24, 2017 AC 5.09%
Oct. 18, 2016 AC -5.56% (Biggest DOWN)
July 19, 2016 AC 4.63%
April 19, 2016 AC 3.34%
Jan. 21, 2016 AC 1.89%
Oct. 20, 2015 AC 5.58%

Avg + or – 4.30%
Bias +2.11%, an upside bias on earning

With stock at 542.00, the data suggests these ranges.
Based on current IV (expected move per TOS): 510.43 to 573.57
Based on AVERAGE move over last 12 quarters: 518.72 to 565.28
Based on MAXIMUM move over last 12 Q’s: 497.72 to 586.28