Stocks move on future news:

The market is an information processing machine, and there is a lot of information to process. Journalists will tell you why and what it is, which may or may not be related. Think of the market as a random walk. It’s randomly moving around, digesting the news, and over time, earnings grow, and then the stocks go up, but nobody knows in advance which stocks will be the winners. And in reality, the returns of the market overall are the handful of stocks that have exceptional gains and have been basically the winners in the market.