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What is the difference between contango and backwardation?
Contango and backwardation describe the relative prices of futures maturities. A deferred contract above a nearer one creates contango; below it creates backwardation. A whole curve can slope upward or downward, or contain both shapes in different segments. The selected term spread, deferred minus near, identifies the relationship without determining the position’s eventual return.
The curve plots the settlement price of each listed expiration against its distance from today. Contango and backwardation are mirror images of that same measurement.
Both shapes put a price on time. Contango is the price of calendar distance. In physically delivered commodities that distance embeds storage, financing, and insurance costs, and in volatility it embeds the wide range of outcomes over a longer horizon and the standing demand for deferred protection. Backwardation is the price of immediate pressure, where a market under stress pays a premium for near-dated exposure and declines to extend that premium across the following year because volatility mean reverts.
How contango and backwardation differ in practice
The consequence that matters to traders is carry, and carry runs through convergence. A futures contract settles to its specified reference value at expiration. That convergence does not require a steady drift toward today’s spot price, because the reference value and curve can change. In contango a long front-month position rolls down the curve toward a lower spot and loses value if nothing else changes. In backwardation the arithmetic reverses, and the long position rolls up toward a higher spot while the short-volatility position gives back its usual tailwind.
Separate the roll-price ratio from the return earned as the held contract reprices. A nearby contract at $100 and a deferred contract at $101 give a ratio of $100 / $101 − 1 = −0.99%. At a constant notional budget, the higher-priced contract represents fewer units of the underlying. A repeated 1% monthly loss compounds to an 11.36% annual loss: 1 − 0.99^12. The position’s real return is the futures price change plus the interest on its collateral, so track both.
The regimes also differ. In its July 26, 2022 article, Cboe reported contango in VIX futures more than 80% of the time since 2010, with backwardation less than 20%. Those frequencies describe that historical sample. Backwardation marks the minority of sessions when volatility supply is scarce, and it showed up during 2008, 2011, the fourth quarter of 2018, and early 2020. As realized volatility falls after a shock, near-dated implied volatility drops faster than longer-dated implied volatility, the curve flattens, and it returns to contango.
How traders read contango and backwardation
Traders read the curve before they size a trade. The first step is diagnostic. A steep upward slope indicates a calm spot tape with normal demand for deferred protection. A flattening curve signals that near-dated risk is being repriced. An inversion into backwardation signals that traders want protection now and are paying more for the front contract than for anything behind it. Checking whether the front VIX futures spread is positive or negative is a fast regime classifier before deciding how aggressively to sell premium.
The second step is cost accounting. Anyone holding a volatility product, a commodity fund, or a futures position across a roll should convert the curve spread into a percentage before sizing. The spread measures the price difference between the contracts being exchanged. Under an unchanged curve, subsequent convergence can be a headwind for a long in contango and a tailwind in backwardation. Calculate actual return from the prices of the contracts held, their weights and costs. FINRA notes that volatility-linked exchange-traded products track VIX futures rather than the VIX Index and are generally not designed to be held as buy-and-hold investments, because they can lose some or all of their value in a short time. Repeated rolls up an upward-sloping curve are one reason a long position in those products bleeds while the index itself goes nowhere.
The third step is choosing a side and an instrument. In contango a short VIX futures position collects the convergence a long position pays while the curve holds its shape, so size it for the volatility spike that inverts the curve and turns that carry into a large loss. In backwardation buyers of near-dated protection are paying for volatility at its most expensive point on the calendar, so many hedgers shift to longer expirations, spreads, or collars during inversion and buy front-month protection cheaply after normalization. Measure the carry each shape implies as a cost or a credit, test it against a shift in the whole curve, and take direction from price, flow and catalysts.
Bottom line
Contango puts a deferred contract above the nearer one, and backwardation is its inverted twin. While the curve holds its shape, that difference sets carry: contango costs a long position roll yield as contracts converge, while backwardation pays the long position and taxes the short. In VIX futures, contango is the ordinary state and backwardation is the stress exception that reverts as volatility fades. Convert the spread into a monthly percentage before sizing, calculate return from the contracts you hold, and trade direction from price and flow.
Common questions
Contango vs Backwardation: FAQ
- Is contango or backwardation more common?
- In its July 26, 2022 article, Cboe reported VIX futures contango more than 80% of the time since 2010 and backwardation less than 20%. That is the article’s historical sample, not an updated frequency for all volatility products. Backwardation shows up during stress, such as 2008, 2011, the fourth quarter of 2018, and early 2020, then reverts as realized volatility fades. Physically delivered commodities also sit in contango often because deferred prices embed storage, financing, and insurance costs.
- How does contango versus backwardation affect roll yield?
- Contango places the deferred contract above the nearby contract; backwardation places it below. For a long position, convergence down an unchanged contango curve creates a negative roll contribution, while convergence up an unchanged backwardated curve creates a positive one. The near-to-deferred price ratio measures the difference at the roll. The held futures contract earns its return through price changes over time.
- Does contango or backwardation predict market direction?
- The curve prices risk, and its record on direction is mixed. Contango is the price of calendar distance and the standing demand for longer-dated protection; backwardation is the price of immediate protection during stress. Cboe found that subsequent 30-day equity index returns after backwardation were mixed, with some of the strongest rallies beginning immediately after the selloffs that created the inversion. Use the curve to price carry and classify the regime, and take direction from price, flow and catalysts.
- Which side of the curve wins in contango versus backwardation?
- Under convergence along an otherwise unchanged curve, contango favors the short side’s roll contribution and backwardation favors the long side’s. A level or shape change can outweigh that effect: a short VIX futures position can lose sharply during a volatility spike even when it began in contango, so size the short for the spike.
- Do contango and backwardation mean the same thing in commodities and volatility?
- The curve shapes are defined identically, but the drivers differ. In physically delivered commodities, contango is driven by the cost of carry, the storage, financing, and insurance embedded in deferred prices, and backwardation often reflects a convenience yield for holding the physical now. In volatility, contango reflects the wide distribution of future outcomes and demand for deferred protection, while backwardation reflects concentrated near-term stress. Applying commodity storage intuition to an equity volatility curve produces the wrong mental model even though the roll arithmetic is the same.