What it means
Start with the two prices. The spot price is what you pay for immediate delivery today, and the futures price is what you agree now to pay on a fixed date later, so when the futures price sits above spot the market is described as being in contango.
The gap usually reflects the cost of carry: warehousing, insurance and the interest on the money tied up in the goods. If oil costs $70 today and holding a barrel for six months costs about $3.50 in storage and financing, a six-month future priced near $73.50 is simply the market pricing that carry.
The opposite condition is backwardation, where futures trade below spot. It typically signals scarcity right now, because buyers are paying a premium for immediate supply rather than waiting.
Contango bites hardest for anyone who holds futures continuously rather than taking delivery. Each time a contract nears expiry the holder must sell it and buy a more distant, more expensive one, and that repeated roll steadily erodes returns even when the spot price never moves.
This is why commodity funds can lose money in a flat market and why their returns diverge from the headline price of the commodity they track. For producers and industrial buyers the effect runs the other way: a market in contango lets a producer lock in a price above spot, and gives a buyer a clear signal about the cost of deferring purchases.
In practice
Real-world examples.
Example
A commodity index fund tracking oil reports a 6% annual loss in a year when the oil price finished roughly where it started. The shortfall came almost entirely from rolling contracts forward in a contangoed market.
Example
An oil trader sees deep contango after a demand shock and charters a tanker for floating storage. Because the forward price exceeds spot by more than the cost of the charter, the trader buys physical crude and sells the forward contract to lock in the spread.
Example
A food manufacturer hedging wheat notices the market is in mild contango. Rather than hedging twelve months out in one go, it staggers purchases so it is not paying the full carry cost on the whole year's requirement.
Think of it
“Contango means futures cost more than spot-you pay extra for future delivery.
Formula
Calculation
Contango premium = futures price - spot price. Roll loss if spot is unchanged at expiry = (futures price paid - spot price at expiry) x contracted quantity.
Crude oil trades at a spot price of $70.00 per barrel, while the six-month futures contract trades at $73.50 per barrel.
Contango premium = $73.50 - $70.00 = $3.50 per barrel, which is $3.50 / $70.00 x 100 = 5.0% of spot over six months.
Now suppose a fund buys the six-month contract for 10,000 barrels at $73.50 and the spot price is still exactly $70.00 when the contract expires. The contract converges to spot, so the fund realises a loss of $3.50 per barrel: 10,000 x $3.50 = $35,000, equal to 4.8% of the $735,000 it committed. The commodity's price did not fall at all, but the roll from an expensive future down to an unchanged spot price produced a real loss, and a fund rolling repeatedly through a year of contango can give up a double-digit percentage without any adverse move in the underlying.Case study
Seen in the real world.
The following is an illustrative and fictional example. Ridgeway Commodity Trust is an invented retail fund that promised investors simple exposure to the price of natural gas through near-dated futures. Its marketing focused entirely on the headline commodity price, and its holders assumed the fund would move roughly in line with it.
Over one particularly flat year the spot price ended within 2% of where it began, yet the fund's unit price fell by about 14%. The cause was contango: each monthly roll meant selling an expiring contract and buying a more expensive one, and twelve of those rolls compounded into a substantial drag.
Ridgeway responded by publishing an explicit roll yield figure alongside its performance and by shifting to a longer-dated contract ladder that rolled less often. Complaints fell sharply, not because performance improved immediately, but because investors could finally see where the money had gone.
Watch out
Common mistakes.
- Reading contango as a forecast that prices will rise. The forward curve mostly prices storage, insurance and financing costs, not a prediction about where spot will actually be.
- Assuming a commodity fund tracks the commodity. Funds holding futures must roll them, and in contango that roll creates a persistent drag that separates fund returns from the spot price.
- Applying the idea to anything traded on a curve. Contango is meaningful mainly for storable goods; for commodities such as electricity, which cannot be stored easily, the curve shape reflects very different forces.
Questions
People also ask.
What is the opposite of contango?
Backwardation, where futures trade below spot, usually signalling immediate scarcity or strong current demand relative to expected future supply.
Does contango always mean losses?
Only for holders who roll futures without taking delivery. A producer selling forward, or a trader with cheap storage, can profit from exactly the same curve shape.
How steep does contango have to be before storage becomes profitable?
Once the premium exceeds the total cost of storage, insurance and financing over the period, buying physical goods and selling the forward contract locks in a positive spread.
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