How do different commodity futures curve shapes affect investment strategy? Can you trade the curve itself?

Commodity futures curves are not static — they shift between contango and backwardation based on supply/demand dynamics, storage economics, and market sentiment. Understanding these shifts is key to commodity investment strategy.

Curve Shapes and Their Drivers:

Full Contango (Most Common):

Futures prices increase with maturity. The curve slopes upward.

• Driven by: storage costs, financing costs, adequate supply, low convenience yield
• Typical markets: gold, aluminum, wheat (in non-crisis periods)

Full Backwardation:

Futures prices decrease with maturity. The curve slopes downward.

• Driven by: supply shortages, high convenience yield, strong near-term demand
• Typical markets: crude oil during supply disruptions, natural gas in winter

Mixed/Humped Curves:

Near-term contango transitioning to long-term backwardation (or vice versa).

• Driven by: temporary supply disruptions expected to resolve, seasonal patterns

Trading Strategies Based on Curve Shape:

1. Calendar Spreads:

Express a view on the curve shape changing:

• Bull spread (long near, short far): Profits when curve flattens or moves to backwardation. Used when you expect near-term supply tightening.
• Bear spread (short near, long far): Profits when curve steepens into contango. Used when you expect near-term supply glut.

2. Roll Yield Enhancement:

Tilt commodity exposure toward backwardated markets and away from contango:

• Instead of a passive long index (which includes contango markets), selectively allocate to commodities with the best roll yield
• Enhanced strategies can add 3-5% per year vs. passive approaches

3. Term Structure Momentum:

Historically, commodities whose curves have recently shifted toward backwardation continue to outperform (the shift signals tightening supply-demand balance).

Practical Example — Calendar Spread:

Winter is approaching and natural gas storage is below average. Current curve:

• December future: $4.20
• March future: $3.80
• June future: $3.50

You believe cold weather will tighten supply further, steepening the backwardation:

Buy December at $4.20, Sell March at $3.80. Current spread = $0.40.

If a cold snap hits and December rallies to $5.00 while March only rises to $4.10:

New spread = $0.90. Profit = $0.50 per contract ($0.90 - $0.40).

Why Curve Dynamics Matter for Long-Term Investors:

Over the past 20 years, the average commodity futures investor earned about 2% per year less than spot price changes due to persistent contango roll drag. Understanding curve dynamics and implementing roll-aware strategies is the difference between a successful and an underperforming commodity allocation.

Practice commodities curve analysis in our CFA Level II question bank.