A foreign exchange correlation is the connection between two currency pairs. There is a positive correlation when two pairs move in the same direction, a negative correlation when they move in opposite directions, and no correlation if the pairs move randomly with no detectable relationship. A negative correlation can also be called an inverse correlation.
Currency correlation is important for traders to understand because it can have a direct impact on forex trading results, often without the trader’s awareness.
As an example, assume that a trader buys two different currency pairs that are negatively correlated. The gains in one may be offset by losses in the other, which is often used as a hedging strategy. Meanwhile, buying two correlated pairs may double the risk and profit potential, since both trades will result in a loss or profit. They are not fully independent since the pairs move in the same direction.