Its not something which haven't happened before in crypto or in stocks as well, and will keep going on since that's how whales get into any of the booming markets. Since crypto is getting more and more recognition and getting accepted widely its attracting bigger and bigger investors who can actually control the markets with media and money both so anyhow they tend to get the market prices down before they can buy in huge chunk. I am not an expert or old into crypto but just my 2 cents why I believe bitcoin and all other cryptocurrencies price is going down for now.