The number of instances is too low to make much out of but the size of the returns is certainly eye-popping. An average return of over 5% in the next 7 sessions. That’s a substantial pop to say the least. For those who would like to review the dates, they are all listed below. Notice how 2002 dominated the study.
While not statistically significant, I find the results noteworthy and interesting. So to the header question: Are we looking at a massive edge or a statistical anomaly?
I'll let you decide.