Margin is the collateral that an investor must deposit with their broker or exchange to cover the credit risk posed by the investor to the broker or exchange. The amount of margin required is clearly displayed in the trading panel and will dynamically change depending on the size of the trade being placed. This means that as you place larger trades, the amount of margin required to maintain those positions may increase. 

It’s important to monitor your margin levels and ensure that you have sufficient funds in your account to meet the margin requirements at all times.