I think they are Bitcoin holders. These are the people who will manipulate the market to enrich themselves. Unfortunately, our market has not included the SEC to protect investors. So the manipulation always takes place, we need to carefully consider before investing.
Yeah they are bitcoin and Altcoin holders and you should know who can hold big quantity of bitcoin and Altcoin. They are only big investors and big companies. They change the price when they want. Small investors cannot do anything about this because the keys of crypto market are in their hands. That why most of the investors lost their money. Manipulation destroyed cryptocurrency.