Those purchases were probably made by nubs who bought the moment they saw Record Revenues. Forward guidance is always key. Not only did Tim Cook lower revenues, HE REFUSED TO GIVE GUIDANCE OF EARNINGS which is something Apple doesn't do. Guess that saying if you don't have anything good to say than don't say it had meaning in Cook's silence.
That's because price discovery these days is a dance between the MM and the hundreds of HFT boxes out there. This all happens microseconds before your typical retail investor knows whats up. And thats where the bulk of the volume is in AH.