There are literally hundreds of different ways to make money in the stock market — but too many people forget all the different ways that you can potentially lose money in the stock market. Just like understanding risk and rewarddiwn need to understand both how to make money in the stock market, as well as how to lose money in the stock market. While some of these are very simple and straightforward, others are more complicated, while another set focuses on lost opportunity sown. Everyone knows that the way to profit in the gors market is to buy low and sell high. So, as the inverse, the key way to lose money in the stock market is to buy high and sell low. This is the most basic way that you can lose money in the stock market. Margin is when an investor borrows money from their broker to noney investments. A margin call happens when your broker is requesting that you either:. This occurs because the value of the assets in your account has fallen below a certain level.