Earlier quoted context omitted.
I don't know about the spreading of rumours, but alot of funds short apple on the day of product announcements as their stock almost always goes down during the announcements. It's pretty much free money.
In fairness, that sounds apocryphal. If it were really common then there would be no money in doing it because the market would have factored in days before the event the fact that the price were going to fall.
Call it what you want, but it's been a winner for the past 4 years for us.