It is also a hedge.

For example, some spot traders and industrialists of agricultural products.

Prevent excessive fluctuations in existing commodities and target prices.

Buy futures to hedge risks.

Now it is also used as a financial derivative.

It also includes the emergence of speculators and arbitrageurs.

The two complement each other.

Without speculators, it is impossible to fully realize the concept of hedging.

Something like that You can buy a book to read.