The exchange is a place where some people sell goods and others buy. The price is formed as a result of the ratio of supply and demand in the market. But since the amount of demand and the amount of supply change during the day, the product becomes either cheaper or more expensive. As you can see yourself, a good trader knows how to find the right moment to buy. Some traders buy goods on the exchange while they are cheap and try to sell them at a higher price. Others play “for the fall”, that is, they make money on the fact that the goods become cheaper. Trading is also called short-term investing. But there are real gurus among traders who sell and buy in a matter of seconds and earn much more than others. They are called scalpers. There are proprietary trading firms remote trading to help you choose stocks, futures or forex.