The stock market is a real-time market where the sellers and buyers come together and exchange shares of publicly traded companies. After you have invested in the stocks, you own a company, and the profit that you will make will be dependent on the performance of the company in the market. The stocks' prices fluctuate upward or downward depending on an incredibly wide range of factors... https://play.google.com/store/apps/details?id=tw.com.weather.interdaytrade&gl=us&hl=en_US