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Contango and backwardation

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Contango and backwardation

The forward curve plots futures prices across all available contract months. The shape reveals market structure and creates profit or loss for investors. Contango is when near-term prices are lower than distant-month prices (normal in abundant supply). Backwardation is when near-term prices are higher than distant-month prices (signals scarcity or immediate demand pressure).

Contango is the default when supplies are plentiful. If crude oil is $80 per barrel spot and one-year futures are $85, the market is in contango. This $5 premium compensates holders for storage cost, insurance, and financing. A warehouse operator paying $1 per barrel annually in storage costs and 3 percent annually in financing ($2.40 on an $80 barrel) might price a one-year contract at $83.40, leaving a thin margin. In truly abundant supply (lots of storage, low financing costs), contango is steep.

Backwardation occurs during shortage or when nearby supply is scarce. During the 2008 oil price spike, crude went into backwardation: spot crude at $140, but the one-year contract was only $120. Why would anyone pay $140 today to store expensive oil for a year? Only if they needed it urgently—or if they expected much higher future prices. Backwardation signals that the market values immediate availability over future convenience.

Storage cost is the pivot. The fundamental relationship is: futures price ≈ spot price + (storage + insurance + financing). If storage jumps from $1 to $5 per barrel annually (due to tank scarcity), the forward curve steepens into contango. Conversely, if supplies are tight and storage is empty, contango collapses or reverses into backwardation. The 2020 oil crash saw WTI futures for May delivery trade negative (below zero!)—meaning the market would pay you to take oil off its hands, because storage was full and demand had evaporated.

Seasonal patterns are crucial. Natural gas is typically in contango during spring and summer (when demand is low and storage fills up) but in backwardation during winter (when storage drains and heating demand peaks). Agricultural commodities like corn exhibit seasonal contango before harvest (storage, financing) and seasonal backwardation right at harvest (immediate supply gluts, incentive to buy forward for winter usage).

The forward curve shape has profound implications for passive commodity investing. If you own a commodity ETF that holds crude oil futures, you're constantly "rolling"—selling nearby contracts at lower prices and buying distant contracts at higher prices (in contango). This is a losing trade: you sell at $80 and buy at $85, locking in a $5 loss per barrel. Over time, this roll yield drag compounds. A steeper contango curve creates larger roll losses. In backwardation, rolling is profitable: you sell at $140 and buy at $120, locking in a $20 gain. ETF performance diverges sharply from spot commodity prices depending on curve shape.

Historical examples illustrate the importance. The 2011–2012 period saw oil in persistent contango, with roll yield losses reducing commodity ETF returns versus spot prices by 2–3 percent annually. The 2008 backwardation saw roll gains add $5–10 per barrel to ETF holders' returns (if they held through the roll). This is why tracking error between commodity spot prices and commodity ETF prices can be substantial—and why understanding the forward curve is essential for commodity investing.

The London Metal Exchange publishes forward curves for all major metals. Copper typically runs in contango (storage at LME warehouses costs ~$50 per ton annually), but during supply squeezes, backwardation appears. Understanding where a commodity sits on the contango–backwardation spectrum tells you whether passive ownership is being subsidized (backwardation) or taxed (contango). Savvy investors use these signals to size positions and construct hedges.

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