Contango: The Normal Uphill Curve
Storable commodities cost money to hold: warehouse space, insurance, financing. In a well-supplied market, futures prices for later delivery sit above nearby prices by roughly those carrying costs. That upward slope is contango, and it is the default state for markets like corn, wheat, and gold in quiet times.
Full carry — the theoretical maximum slope — is set by the actual cost of storing the commodity until delivery. Prices can exceed it only briefly before arbitrage pulls them back.
Backwardation: When Now Costs More Than Later
When the physical commodity is scarce right now, buyers pay up for immediate delivery and the curve inverts: nearby contracts above deferred ones. Crude oil in a supply crunch, or grains after a crop failure, often flip into backwardation. It is the market paying a premium for immediacy.
The extremes teach the lesson best. In the spring of 2020, crude oil's nearby contract collapsed so far below later months that the front contract briefly traded negative — contango at its most violent, when storage filled up and nobody wanted delivery. The opposite extreme shows up whenever a grain crop fails: spot and nearby prices leap above the deferreds, rationing scarce bushels until the next harvest. Same mechanism, opposite direction.
Why the Curve Matters to You
- Long-term longs in contango repeatedly sell expiring cheap contracts and buy pricier later ones — a structural headwind called negative roll yield.
- Long-term longs in backwardation enjoy the reverse: rolling down the curve adds a tailwind over time.
- Hedgers watch the curve for storage decisions — a strong carry can literally pay the elevator to hold grain.
- Spread traders trade the curve itself, betting the slope will steepen or flatten.
You can read the curve yourself in seconds: pull up quotes for several contract months of the same market and line the prices up in order. Rising prices into the future is contango; falling prices is backwardation. The steepness tells you how much the market is paying for storage or for immediacy, and it reshapes week to week with supply news.
Futures trading involves substantial risk of loss and is not suitable for all investors. Curve shape can change fast, and past curve structure guarantees nothing about future rolls.