The market can also be influenced majorly my retail holders because they are easily pushed by the fear of missing out but Satoshi or MS will not just sell off all its Bitcoins in one night. The reason is because MS and Black Rock are holding the coins for its value and they tend to understand more about the mission of Bitcoin which is to continue  growing in value in the future and they can dump at once since they don't know who might be buying to hold and when they are buying back, the price could be high. I don't want to talk about Satoshi's holding because we don't even know if he is still loving or not or if he still have access to these coins or not.