Source: $1B BITCOIN TRANSACTION TRACED BACK TO MULTIPLE HUOBI ADDRESSES

Someone also on the Speculation section has monitored this wallet and posted just after the transactions were made.

This was the thread: https://bitcointalk.org/index.php?topic=2076717.20

I think whoever that person is intelligent enough to cover their identity and will act accordingly to not expose who he/she is unless doesn't care about personal security.