I think that it is almost impossible to fix the price of a coin on the spot under the conditions of very high market volatility.
The ups and downs of the cryptocurrency market greatly affect prices, as well as demand from participants.
No one can control the coin price nor anyone can suppress it. Bitcoins and crypto currencies are decentralized and no one have control over them.
If you want to pump a coin, you need to bring volume into it. Demand and supply play a major role in bitcoin and price movements.