What is day trading, and should a beginner try it?

Day trading means opening and closing positions within a single session, aiming to profit from moves of a few percent or less, often many times a day. Nothing is held overnight. It is closer to a job than to investing, and the people who do it well treat it as one: screens, routines, strict rules and years of practice.

The evidence on beginners is consistent across countries and decades. A large Brazilian study followed everyone who started day trading over several years; fewer than 1 percent earned more than minimum wage, and the longer people persisted, the more they lost. US and Taiwanese studies found similar patterns. The winners you see online are real, but they are the survivors of a very large field.

Why it is so hard: you are trading against firms with faster connections, better data and lower costs, and every trade costs you the bid-ask spread. Add short-term capital gains tax on any profits, and the bar to come out ahead is higher than it looks.

A better order of operations: learn to invest first, with a fund and a few years of watching how markets behave. If after that you still want to trade, do it with a small, separate pot and a log. The log is what tells you the truth.