I read that yesterday was due to breaking support at a lot of ppl had used stops under support and they all got taken out and it was like a domino effect then. Today market is really sucking and Apple is following right along.
The bears got the momentum. Major holders are annoyed by the management, and they dump. Lots of them bought prior to 2012, so they are still selling at a gain. Other late coming money funds have to cut losses. This is really sad.