They have many different types that make the bitcoin price dump and pump. Because of the fake news the newbie will make panic selling of the holdings so the price will go down. Because of the big investors the price will pump.
Bitcoin prices have many cases to affect. firstly, It is said at one time that Bitcoin will be banned in America. Due to the fact people gave up Bitcoin. secondly ,Investors from other countries lifted their investment from Bitcoin. Moreover, the price of Bitcoin has been affected due to the arrival of other coins in the crypto market.