He kicked off 2017 by buying 2 million shares in January. And another 1 million on August 23. After that he set it up to automatically buy shares, although the amounts vary radically. Starting October 23, it looks as though he's buying in every single day, or close to it.
As to his motives, it's pure speculation.
I'm speculating on a profit from this stock. Your results may differ :-)
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