Not quite sure though unless it is someone who held his stash in a wallet and forgot his keys or something. In my opinion, there's no one can hold that long because I believed that as a person or investor if they saw an opportunity to get a huge amount of profit then they will definitely grab it without hesitation so I don't think they can pull it off. However, if someone really did it besides satoshi himself then that is commendable, if you will calculate that it for the current price we have now that would be an overwhelming profit. But I guess someone can now able to pull it off because investors have now more confident.