Why Agree Now on Next Year's Price? Locking In Against the Unknown

A farmer planting in spring will have grain to sell in autumn and has no idea what it will fetch, since the price depends on weather across a continent, on demand and on what every other farmer decided to plant. A miller who needs grain in autumn faces exactly the opposite uncertainty. Each would prefer a known price to an unknown one, even a slightly worse known price, because a known one allows planning, borrowing and committing to costs. An agreement made in spring to exchange a stated quantity in autumn at a stated price removes the uncertainty for both at once, which is the original purpose and remains the economic justification.

Private agreements have obvious weaknesses that an organised market removes:

• •Standard quantities, grades and delivery dates, so any contract matches any other
• •A clearing house that becomes the counterparty to both sides
• •Margin deposited by both parties and adjusted daily as prices move
• •Elimination of the risk that the other side simply fails to perform
• •The ability to close a position by taking the opposite one rather than delivering
• •Continuous public pricing, which tells everybody what the market expects

The overwhelming majority of these agreements are settled before the delivery date by entering an offsetting one, so no grain changes hands, and this is frequently presented as evidence that the market has detached from reality. It has not, and the reason is that hedging works through the price rather than through the goods. A farmer who sells a contract in spring and buys it back in autumn makes or loses exactly what the price moved, which offsets the gain or loss on the actual crop sold locally, so the combination produces the fixed price intended without either party using the exchange's delivery mechanism. The possibility of delivery is what ties the contract price to the physical price, and it need not be used to do that job.

The agreed price for a later date is not a forecast, which is the point most often misunderstood, and the reasoning is worth following. For a storable commodity the price reflects today's price plus the cost of holding the goods until then, namely storage, insurance and the interest on the money tied up, since anybody could otherwise buy today, store, and deliver later for a guaranteed profit. That relationship binds the two prices together and is enforced by exactly that trade whenever it drifts. Where the goods are scarce today, the relationship inverts and the later price sits below the current one, which signals a shortage and is watched closely for that reason. Only where storage is impossible, as with electricity, does the later price become a genuine expectation.

A market where everybody wanted to hedge in the same direction would not function, since somebody must take the other side, and that role is filled by participants who want the risk because they expect to profit from it. Their presence supplies liquidity, meaning a hedger can enter or leave a position at any time without moving the price much, which is the service they provide and the standard defence of their role. The criticism is that speculation can push prices away from what supply and demand justify, particularly in food and energy where the consequences fall on people with no involvement, and the evidence on whether this happens is genuinely mixed. Regulators respond with position limits capping how much any participant may hold.

Agreeing a price now for a later exchange removes uncertainty for a producer and a buyer simultaneously, which is why the instrument exists. An exchange standardises the terms, stands between the parties and takes margin daily, which removes the risk of non-performance. Most positions are closed rather than delivered, and hedging still works because the gain or loss offsets what happens in the physical market.