$3 billion hedge fund company starts investing in Bitcoin via OKCoin.
This is lie.
Why do you think that?
Why would a public figure like Zane Tackett, Manager of International Operations at OKCoin, make a public statement to that effect if it was so easily seen to be a lie?
He might have exaggerated the extent to which they intend to be involved, but I doubt if it's an outright lie.