What Are Commodity Futures? How Gold, Oil and Wheat Actually Trade on Exchanges
The contract behind the price you see on the news
When the news says "oil fell" or "gold rose," it is almost always quoting a futures price — not the price of a barrel sitting in a warehouse today, but the price of a contract to buy or sell that commodity at a set date in the future. That contract is the commodity futures market, and it is where the world's most important prices are actually set: for oil, gold, wheat, coffee, natural gas and dozens more. The market exists for a simple reason. A farmer wants to know what wheat will be worth at harvest. An airline wants to lock in fuel costs for next year. A jeweller wants gold at a known price. A futures contract lets each of them fix a price today for a delivery later — and lets speculators take the other side, providing the liquidity that makes the whole system work. If you want to understand commodity prices, you have to understand the contract first.
How a futures contract works
A futures contract is a standardised agreement traded on an exchange: a fixed quantity of a commodity, of a fixed quality, for delivery at a fixed place and date. The buyer (long) agrees to take delivery and pay; the seller (short) agrees to deliver and be paid. In practice, almost nobody takes delivery — positions are closed before expiry by taking the opposite trade. What makes futures different from simply buying the commodity is leverage and margin. Instead of paying the full value up front, a trader posts margin — a good-faith deposit, typically a small fraction of the contract's value — and the position is marked to market daily: gains are credited and losses debited every day as the price moves. That is why futures can be so profitable and so dangerous. A small price move, multiplied by a large contract, can wipe out a margin deposit fast — and when losses exceed the deposit, the broker issues a margin call demanding more money, or closes the position. This daily settlement is also what keeps the system honest: unlike an over-the-counter promise, a futures position cannot quietly accumulate a hidden loss for months.
Hedgers, speculators — and why both are needed
Two kinds of participant keep the market working, and beginners often confuse them. Hedgers use futures to reduce risk: the farmer sells wheat futures to lock in a harvest price; the airline buys oil futures to cap fuel costs; a gold miner sells gold futures to guarantee revenue. If the spot price moves against them, their futures position offsets the loss on their real business. Speculators use futures to take risk on purpose: they have no wheat, oil or gold, and they bet on the direction of the price. That sounds like gambling, and at retail size with high leverage it often is — but speculators also supply the liquidity hedgers need. Without them, a farmer wanting to sell would struggle to find a buyer at a fair price. The exchange sits in the middle as clearinghouse, guaranteeing both sides: it becomes the buyer to every seller and the seller to every buyer, so no trader depends on the other side's creditworthiness. That structure — standardised contracts, daily settlement, margin, and a central clearinghouse — is what separates a futures exchange from an unregulated bet.
• Long: buying a futures contract — you profit if the price rises
• Short: selling a futures contract — you profit if the price falls
• Margin: the deposit posted to hold a position, a fraction of the contract's full value
• Mark to market: daily settlement of gains and losses as the price moves
• Margin call: a demand for more money when losses eat into the margin deposit
• Spot price: the price for immediate delivery, versus the futures price for a later date
• Delivery vs cash settlement: some contracts end in physical delivery; many financial and some commodity contracts settle in cash instead
The traps beginners fall into
Three traps catch almost every beginner. First, leverage: a contract controlling tens of thousands of dollars of oil or gold can be held with a few thousand in margin, so a 2% move is not a 2% gain or loss on your account — it is many times that. Second, expiry and the roll: a futures contract has an end date, and holding it into expiry can mean delivery obligations or forced closure; traders who want to stay exposed must "roll" into the next contract, and the price gap between contracts (the curve shape — contango or backwardation) can add a cost or a gain that has nothing to do with the commodity's direction. Third, confusing the futures price with the spot price: headlines quote futures, and a futures price can rise while the spot price falls, or vice versa, because it embeds storage costs, interest rates and expectations. The beginner's checklist is short: trade a contract you understand, size the position so a normal daily move cannot trigger a margin call, know the expiry date before you enter, and never treat a leveraged futures position like a buy-and-hold investment. Futures are a tool for price discovery and risk transfer first — and only second, for those who accept the leverage, a trading instrument.
FAQ
What is a commodity futures contract? A standardised exchange-traded agreement to buy or sell a fixed quantity of a commodity at a fixed price on a future date.
Do traders actually take delivery of oil or wheat? Almost never — most positions are closed before expiry; some contracts also settle in cash rather than physical delivery.
What is margin? A good-faith deposit, a fraction of the contract's value, that lets a trader hold a leveraged position; losses are settled daily.
What is a margin call? A demand for additional funds when losses reduce the margin below the required level; if it is not met, the broker may close the position.
Who uses futures, and why? Hedgers (farmers, airlines, miners) lock in prices to reduce business risk; speculators take price risk and provide liquidity.
How is a futures price different from the spot price? The spot price is for immediate delivery; the futures price is for a later date and reflects storage costs, interest rates and market expectations.
Read more on Zimbuck: https://zimbuck.com/pages/zimbucknews and join the discussion at https://zimbuck.com/groups/zimbuckmarketnews . Related reading on the site: Contango and Backwardation Explained: How Commodity Futures Curves Work — and What They Tell Traders, https://zimbuck.com/blogs/793/Contango-and-Backwardation-Explained-How-Commodity-Futures-Curves-Work-and and Oil Slides Below $100 as Iran Talks Ease Gulf Fears, https://zimbuck.com/blogs/833/Oil-Slides-Below-100-as-Iran-Talks-Ease-Gulf-Fears . Join Zimbuck at https://zimbuck.com to follow more commodities coverage.
This article is general educational information only, not financial advice.
