Currency futures allow investors to hedge risks from unpredictable currency movements. Some key points:
1) Currency futures are exchange-traded derivatives whose value is based on the underlying currencies. They enable hedging of currency risk.
2) Currency futures differ from forwards in that they are exchange-traded rather than over-the-counter.
3) Market participants in currency futures include hedgers who offset currency risk, speculators who trade based on price expectations, and arbitrageurs who seek to profit from temporary price differences.