Maybe I'm misunderstanding. Your comments suggest to me that you think there was yet another secondary offering associated with this news.
> The 8,167,544 shares of Issuer common stock were acquired by the reporting persons in a registered offering of common stock by the Issuer on March 17, 2017 and through open market purchases, for an aggregate purchase price of $1,777,842,836 (including commission).
That means Tencent acquired its position at an average price of $217 / share. The March 17 secondary was priced at $255 / share. Algebra tells us that > 98% of Tencent's position was acquired on the open market and the rest via the March 17 offering.