If you are talking about Grayscale investment they do have one of the biggest portfolio in the cryptocurrency space and there are other major public investment companies that are holding billions of dollars worth of BTCitcoin and then there are individual investors and early adopters who are holding huge amounts and it is impossible to know who is making the sell order until you have the tools to analyze all the big transactions and there are companies that are monitoring those.

Right now the market is around $31500 which is still a huge valuation and we had a 17% correction in the past one week and we had seen worst in the past and we have seen the market recover swiftly and this is not a big surprise as the market was rallying breaking all the resistance and expect a correction once in a while.