With the markets sitting in a very volatile state, the risk of a large pump and dump is at an all time high. Simply put, falling Bitcoin prices means that investors are currently very vulnerable. Realistically speaking, since a large majority of the Bitcoin market is owned by a minority of wallets, investors can get together to buy in bulk and then sell in bulk in order to pump and dump. The benefits of this are simple – they control the majority of the market so can buy at the best price, and can agree a time to sell, at the best price.
Does that make sense?