You dont need to know something, that opening buy tells it all. No one puts out that kind of money without knowledge of what they are buying. My guess is a dividend will be paid, how much, I dont know, but these are give a way prices on the stock
The trading between December 15 and December 28 sometimes has peculiar aspects to it that are not directly related to the company, but more related to the business affairs of the buyers/sellers (year-end positioning, tax issues etc.)
Sometimes there are great buying opportunities if you have followed a given company and it gets slaughtered during that period with a low likelihood that there is a "fundamental" reason for the move.