Margin investing offers the opportunity to super-charge investments, but it also holds quite a bit of risk. Recent market volatility has shed a light on some of these risks, particularly for users of app-based platforms like Robinhood.
Let’s consider an example of margin investing with Robinhood. An investor deposits $5,000 cash into a margin account, and Robinhood lends another $5,000 to allow the investor $10,000 worth of securities. The “margin” is the difference between the value of the securities and the loan from Robinhood. This type of investing increases both purchasing power and financial leverage. 
If the securities in the margin account increase in value, the investor has the opportunity for a higher profit than they would have had they invested $10,000 of their own.