It is a contract used by traders to fix the price of an asset in the future in order to eliminate losses due to currency risk.
The economic indicators that determine the change in the eurusd trend on D1 and at the same time the futures contracts are those related to work: NFP, ADP employment change and others.
Also, usd appreciates in the months of March, June, September and December, because that's when such contracts reach maturity and determine the purchase of usd.
My posts are not trading advice.
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