I am trying to analyze what causes some coins to rise in price more than 10% in one day, while no announces actually happen.
1. It does not look like a pump and dump, since the price is growing gradually during the day, not in one minute and not dumping quickly.
2. There were no news on Twitter, media or coinmarketcal.
There are small news that might affect the price. For example, has anyone noticed that google has lifted the ban previously put on crypto advertisements? That's a small news that goes unnoticed most of the times but these things help the price of Bitcoin.
Similarly, 100s of small things happen every day and you don't know what triggers a whale to invest or divest who are the main reason for the market movement. Then there are days when the market moves just because one particular type of trades happened more than the other. Like if more people sell BTC on a single day than people who buy BTC, the price will slightly com down.