Currency future
What this means in practice is that it is a contract to exchange a currency at a particular exchange rate.
Why would people want to take out future currencies?
Well like many products and futures specifically, it is a hedging position. If a business is exposed to changes in an interest rate, then they can hedge against the problems that an adverse currency move would cause them by taking out a future in the other direction effectively.
Therefore currency futures are a popular product with many companies using them to try to keep their positions stable.
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