Looking at this on both ways, the price of Bitcoin is still on the high side and definitely, them selling is still on a profitable side for them. This might have its own part in the current market situation. The wildfire that's going on Los Angeles is also having its effect on the market price as well. Some talks in news about Trump, as regards the hush-money case.
All these put together and some others that we might not even be talking about could all be the reason for this current drop in the price of Bitcoin.
All these will be until the inauguration day and after that, we start seeing a new phase of the crypto market.