Margin trading is a form of borrowing that allows you to leverage the funds and securities you already own to purchase additional securities. With a margin account, you can borrow funds from your brokerage firm. This provides an opportunity for you to leverage your investment to help increase your return. However, margin trading is quite risky and can magnify your losses.
For applying for margin you should have a clear understanding of the rules and potential risks associated with margin, such as the pattern day trading rule, day-trading buying power versus overnight buying power, and margin calls. Margin trading increases the risk of loss and includes the possibility of a forced sale if account equity drops below required levels.