If you watched crude oil futures slide more than 3% to under $85 a barrel this week as the U.S. and Iran moved toward a deal to reopen the Strait of Hormuz, you saw futures pricing in action.
Futures prices move constantly, and understanding what drives them is essential whether you trade contracts directly or simply want to know why gas prices, mortgage rates, and grocery bills shift the way they do.
How Are Futures Prices Determined?
Futures prices are determined by open-market bidding between buyers and sellers on regulated exchanges, anchored to two main forces: the current spot price of the underlying asset and the market’s collective expectation of where that price is headed by the contract’s expiration date.
In other words, no committee sets the price of a December crude oil contract.
Thousands of traders, hedgers, and institutions submit bids and offers through exchanges like the CME Group, and the price you see on your screen is simply the last level at which a buyer and seller agreed to transact.
That process, called price discovery, runs nearly 24 hours a day, five days a week.
The Spot Price and the Cost of Carry
Every futures price starts with the spot price, which is what the asset costs for immediate delivery today.
From there, traders add or subtract what economists call the cost of carry.
For physical commodities like gold, oil, or corn, the cost of carry includes storage, insurance, and the interest you give up by tying money to the asset until delivery.
For financial futures like S&P 500 contracts, the math swaps storage costs for interest rates and subtracts expected dividends.
That is why interest rates matter so much to futures pricing, and why traders watch the Federal Reserve’s policy moves closely.
When rates rise, the cost of carrying an asset to a future date rises with them, which tends to push futures prices further above spot.
Supply, Demand, and Expectations
On top of that mechanical foundation sits the messier ingredient: expectations.
Futures prices reflect everything the market believes about future supply and demand, updated in real time as news breaks.
This week offered a textbook example. U.S. crude futures fell 3.2% to close at $84.88 per barrel on Friday, and prices lost about 6% for the week, as traders bet that a U.S.-Iran agreement would restore oil flows through the Strait of Hormuz.
Nothing about today’s physical oil supply changed in those sessions. Expectations did.
The same dynamic was visible in May, when Brent crude slipped on reports that Washington and Tehran were nearing a ceasefire extension.
Weather forecasts move grain futures, earnings season moves index futures, and inflation reports move interest rate futures for the same reason: each piece of news reshapes the consensus forecast.
Contango and Backwardation
The relationship between futures prices and spot prices has its own vocabulary.
When contracts further out in time cost more than near-term contracts, the market is in contango, which usually reflects normal carrying costs.
When distant contracts cost less than near-term ones, the market is in backwardation, which often signals tight supply right now, exactly the condition oil markets showed during the worst of this spring’s Hormuz disruption.
Reading that curve tells you a great deal about what professional traders expect, and it is one of the first skills worth building. We’ve broken down how futures contracts work, from contract specs to settlement, if you want the mechanics in more depth.
Convergence at Expiration
One rule holds no matter how wild the speculation gets: as a contract approaches expiration, its price converges with the spot price.
Arbitrage enforces this. If a contract expiring tomorrow traded well above the spot price, traders would sell the contract, buy the physical asset, deliver it, and pocket a riskless profit until the gap closed.
That convergence is what keeps futures tethered to reality rather than drifting into pure speculation.
Watching Prices in Real Time
The fastest way to internalize all of this is to watch live futures quotes react to news.
Plus500 offers a futures platform with real-time data and a free demo account, so you can watch crude, gold, and index contracts reprice around events like this weekend’s potential Iran deal without putting capital at risk.
When you are ready to compare costs and tools more broadly, we’ve ranked the best futures trading platforms on commissions, margins, and platform quality, and rounded up the best brokers for futures traders by trading style.
Keep an eye on next week’s expirations too: the June S&P 500 contract settles on June 18, and watching its final convergence with the index is a free lesson in how futures pricing actually works.
