Summary: A Grinch-y report sent Blackberry shares down once again: co-founder Mike Lazaridis and another executive from the company are abandoning their previously-revealed buyout bid, and instead opted to trim their stake. Blackberry shares down about three percent on the news. Plus, Amazon's looking to catch a lift at the holidays--not from drones, but from a boost in online sales. And we've got Jim Cramer's explanation for why he decided to acquire more shares of General Motors.
