Agricultural Futures Basis

Key Takeaways

1. 1Basis is the gap between a futures contract price and the local physical spot price — driven by storage costs, transportation, and other carry expenses
2. 2Cost of carry is the foundation: the total cost of storing grain or livestock, insuring it, and transporting it to the delivery point
3. 3Basis follows a seasonal pattern — negative (futures premium) at harvest when supply floods the market, then positive (spot premium) pre-harvest when supplies tighten
4. 4Farmers realize prices not at futures levels but at 'futures minus the local basis' — making basis tracking essential for effective hedging
5. 5Basis risk is real: unexpected shifts in the spread can erase anticipated hedging profits even when the futures position goes as planned
6. 6Arbitrage enforces the relationship — merchants buy physical grain at harvest lows, sell futures at premiums, store, then deliver at expiration for a carry profit
7. 7Calendar spreads let traders bet on how carry costs evolve across different contract months, effectively wagering on basis changes
8. 8Basis converges to zero at futures expiration — the delivery mechanism keeps futures and spot prices tethered through arbitrage pressure
9. 9Livestock basis is more complex — it incorporates feed costs and weight-gain expenses, making it more sensitive to input price swings