Apple's keynote is tomorrow. Does the stock rise into it? We built the calendar first, 95 keynotes since 1984, then ran the stock through each one.
The day of the show is the day to be careful: the stock closed lower at 2 of every 3 keynotes. WWDC is the clean version: it rises the week before and drops on the day, 22 of 27 times. Buy the rumor, sell the keynote.
September iPhone events are the exception. The stock usually sinks INTO them, 10 of the last 14 times, the day itself is a coin flip...