First, let's be clear about what day trading isn't. It's not investing, which is the process of buying a stake in an asset that will hopefully build a profit over the long term. How long is subjective, but investors generally hold assets for years, even decades. And they're usually concerned with the businesses they invest in. They look for companies that make solid profits, pay off debts in a timely manner, have a strong pipeline of products and avoid litigation.
Day trading, on the other hand, involves buying and selling securities within the same day. Day traders often use borrowed money to take advantage of small price movements in highly liquid stocks or indexes. In general, they follow the same wisdom as longer-term investors: They try to buy low and sell high -- they just do it in a very compressed window of time.
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