#Earnings $BIIB reports tomorrow morning. Below are details on earnings FIVE-day moves over the last 12 quarters.
***NOTE: These are 5-day moves, since options traded for earnings will expire on Friday.
Tue 10/23/2018 BO -4.87%
Tue 07/24/2018 BO -4.95%
Tue 04/24/2018 BO +6.75%
Thu 01/25/2018 BO +3.46%
Tue 10/24/2017 BO -6.33% Biggest DOWN
Tue 07/25/2017 BO +0.96%
Tue 04/25/2017 BO -2.04%
Thu 01/26/2017 BO +1.03%
Wed 10/26/2016 AC -5.49%
Thu 07/21/2016 BO +9.50% Biggest UP
Thu 04/21/2016 BO +7.13%
Wed 01/27/2016 BO +5.07%
Avg (+ or -) 4.80%
Bias 0.85%, slight positive bias on earnings.
With stock at 333.00 the data suggests these ranges:
Based on current IV (expected move into Friday per TOS): 316.16 to 349.84
Based on AVERAGE move over last 12 quarters: 317.02 to 348.98
Based on MAXIMUM move over last 12 Q’s (9.5%): 301.37 to 364.64
Open for requests on other symbols.