Price of Bitcoin, Litecoin,Ethereum and Bitcoin Cash

Hey? Did you noticed the rate of Bitcoin Litecoin etc price two days before? The Bitcoin price was about 7550$ . It was pumped about in a hour . Also Bitcoin cash, Ethereum and Litecoin price was increased but now go to market and look at the price. It's down now. What do you think? Should we hold our btc and other coins or sell them ehen the price is too high?