It's not a secret Satoshi Nakamoto has more than 1 million of Bitcoins in his wallet, right?
If he suddenly wants to sell all his Bitcoins, could it cause a chaos in Bitcoin market making the price fall? Or is this amount too insignificant to cause any mess?
1 million coins is 1 out of every 16 coins in circulation so that is something that could destroy bitcoin if it was done incorrectly, personally I think that satoshi is never going to sell his coins, but if at some point he wants to do it, I think he will need to come out of hiding and say that he needs some of his coins and state the way in which he is going to do it to avoid panic among users.