This reminds me of the Bitcoin address that's been sleeping for the past years and suddenly woke up yesterday, I think it consists of thousands Bitcoin and people are panicking over this, even the market was in fear.
The address move 10,000 separately to different addresses and a friend told me that they start dumping already, billions in dollars worth I guess but honestly I just told him that in two days the market will absolve everything if the whale decide to dump it all.
Later I read on news that this could be a hack because before this person start moving the Bitcoin he did some testnet transaction on BCH, can't get you the accurate info here because I was confuse myself, later in the day some are spreading news that quantum computer is responsible for this, that the wallet was hacked. I refuse to believe though.