Contango and Backwardation

What Is the Futures Curve?

When you look at futures contracts for a commodity like crude oil or natural gas, you'll notice that contracts expiring in different months carry different prices. The futures curve is simply the line you'd draw if you plotted those prices — nearest delivery on the left, furthest delivery on the right. The shape of that curve tells a story about what the market expects for supply, demand, and the cost of holding a physical commodity over time.

The spot price is what a commodity costs for immediate delivery today. Futures prices are what buyers and sellers agree to pay for delivery on a specific future date. Those two numbers are almost never identical, and the relationship between them is where contango and backwardation live. You can explore the difference in depth on our spot vs futures prices guide.

Contango: When the Future Costs More

Contango is the condition where futures prices for later delivery months are higher than the current spot price — and higher than nearer-term futures contracts. The curve slopes upward as you move further out in time. This is actually the normal, or "neutral," state for many commodity markets.

Why would anyone pay more for something delivered later? Because holding a physical commodity isn't free. Whoever stores oil in a tank, wheat in a silo, or gold in a vault pays for the space, insurance, and the financing cost of having capital tied up in inventory. The gap between the spot price and a further-out futures price tends to reflect those cost-of-carry expenses — the total cost of owning and storing a commodity from now until the delivery date.

A Hypothetical Contango Curve

Suppose crude oil is trading at $80 per barrel today. A market in contango might look like this:

All figures are hypothetical examples only. The premium at each step reflects the estimated cost of financing and storing oil for that period. Economists and traders read deep contango as a signal that physical supply is comfortable — there is enough commodity available that the market is not in a rush to buy it now.

Backwardation: When Now Costs More

Backwardation is the opposite condition: the spot price and near-term futures are higher than contracts for later delivery dates. The curve slopes downward. Backwardation is less common but carries a strong market signal.

A downward-sloping curve typically indicates that the physical commodity is scarce or urgently needed right now. Buyers are paying a premium for immediate delivery because inventories are tight, a supply disruption has occurred, or seasonal demand has spiked. The market is essentially saying: "Getting this commodity today is worth more than getting it in six months." OPEC production cuts, for example, have historically pushed oil markets into backwardation by tightening near-term supply.

A Hypothetical Backwardation Curve

Using the same starting point, a backwardated market might look like this:

All figures are hypothetical examples only. The declining prices further out suggest the market expects conditions to normalize over time — that the current tightness is temporary. Traders and analysts watch the degree of backwardation (how steep the slope is) as a gauge of how severe the near-term supply crunch is perceived to be.

Roll Yield: The Hidden Cost and Benefit

Here is where contango and backwardation become critically important for anyone who follows commodity funds or indices. Futures contracts have expiration dates — they don't last forever. A fund that wants continuous exposure to, say, oil must regularly sell its expiring contract and buy the next one out. This process is called rolling the contract. The financial result of that roll is called roll yield.

In contango, rolling hurts. The fund sells a cheaper near-term contract and must buy a more expensive one further out. Imagine repeatedly selling at $80 and buying at $81 — over months and years, that drag compounds significantly. This is one reason commodity funds have historically underperformed the raw spot price of the commodity they track during prolonged contango markets.

In backwardation, rolling helps. The fund sells its expiring contract at a higher price and buys a cheaper one for the next period. Selling at $80 and buying at $79 generates a small gain on every roll. Over time, this positive roll yield adds to returns on top of any move in the spot price itself. Historically, backwardated commodity markets have tended to generate better returns for futures-based funds than their contango counterparts, all else being equal.

The April 2020 oil price collapse — when WTI crude briefly traded below zero — was partly a roll-yield crisis. Traders holding the expiring front-month contract could not afford delivery of physical oil and were desperate to sell at any price before the contract expired.

What the Curve Shape Signals About Markets

Economists and commodity analysts use the shape of the futures curve as a real-time barometer of supply and demand conditions. A market shifting from contango into backwardation often draws attention because it suggests inventories are being drawn down and near-term demand is outpacing supply. The reverse shift — from backwardation into contango — can indicate that supply is recovering or that demand is softening.

For energy markets specifically, the spread between the front month futures price and a contract six or twelve months out is a number that traders watch closely. You can see how these dynamics play out in the crude oil market on our crude oil explainer. The seasonality of natural gas demand — cold winters, hot summers — also causes the gas futures curve to shift shape repeatedly throughout the year.

Beyond energy, gold is an interesting case. Because gold is almost entirely held above ground and storage costs are relatively low, gold futures tend to stay in mild contango most of the time. The cost-of-carry logic applies cleanly. Agricultural commodities, by contrast, swing between contango and backwardation with harvest cycles — a bumper crop filling silos pushes toward contango; a drought squeezing supply pushes toward backwardation.

Key Terms at a Glance

Understanding the futures curve requires a handful of related concepts. Open interest — the total number of outstanding futures contracts — often rises when a market moves into backwardation, as hedgers rush to lock in elevated near-term prices. Hedging is exactly that: producers use futures to guarantee a selling price, while consumers use them to lock in a purchase price, regardless of where the spot market moves.

Arbitrage keeps the futures curve anchored to economic reality. If the contango is steeper than actual storage costs, traders can profit by buying physical commodity, storing it, and selling a futures contract at the inflated price — and that buying and selling pressure pushes the curve back toward fair value. The liquidity of the futures market matters here too: the more actively traded a contract, the faster these arbitrage forces work. See our guide on market liquidity for more on how that mechanism functions.

You can track live commodity futures prices across energy, metals, and agriculture on our commodities data page, where the most active front-month contracts are displayed alongside percentage moves for the day, week, month, and year.