As i understand there can be specific & a few reasons behind it. If a supply is law there is a possibility to to rise the price of a token. Supply & demand has a effect too. If more demand on a coin can give a spike of the coin price. Strong news, updates & developments of the project by the company is a hint for price hike. Apart from all this total market is depend on BTC movements. When BTC is on the go all the other ALTS are increasing parallel & decreasing when BTC is at down trend. Whales too can manipulate the price at some stages. Government or global rules can  effect for the price as well. So there are many reasons. But these price actions are important facts to be considered if you are particularly a trader. Don't chase for the price movements. It's uncontrollable.