The spread is the gap between the price at which you can buy an asset and the price at which you can sell it at the same moment. It represents a basic cost of trading — when a trade is opened, it usually starts at a small disadvantage equal to the spread. Spreads can be wider or narrower depending on the asset and on market conditions: highly active markets tend to have tighter spreads, while quieter or more volatile ones can have wider spreads. Being aware of the spread helps traders understand the true cost of entering and exiting a trade.