Forwards and Futures - Instrument Basics › Limitations and Practical Considerations

Futures contracts are powerful tools, but they come with important limitations that you must understand.

Standardization constraints cut both ways. While standardization enables liquidity and transparent pricing, it prevents perfect customization. A company with exposure to a specific grade of commodity at a non-standard location faces basis risk. A portfolio that doesn't match any available index future requires cross-hedging. The mismatch between standardized contracts and actual exposures is a persistent source of hedging imperfection.

Margin and financing requirements can create cash flow challenges. If you are fundamentally protected against price movements, you may still face liquidity pressure from margin calls during adverse market moves. An airline hedged against rising fuel prices still needs cash to meet margin calls if prices temporarily spike, even though their physical fuel costs will also rise, offsetting the futures losses. This timing mismatch has caused problems for even sophisticated hedgers, most famously Metallgesellschaft's $1.3 billion loss in 1993 despite having a theoretically sound hedge.

Rolling costs affect long-term positions. Because futures contracts expire, maintaining ongoing exposure requires periodically closing expiring positions and opening new ones in later-dated contracts. If later-dated contracts are more expensive than near-term contracts (contango), rolling incurs a cost. Commodity ETFs that maintain futures positions face persistent drag from negative roll yields in contango markets. The USO oil ETF, for example, has significantly underperformed spot oil prices over time due to rolling costs.

Liquidity concentration in front-month contracts means that longer-dated hedges may face wider bid-ask spreads and greater price impact. A corporate treasurer hedging a three-year currency exposure may find that liquid futures markets only extend six months out, requiring a series of shorter hedges that must be rolled forward.

Futures markets support risk management across many sectors. Airlines hedge fuel, food companies hedge ingredients, multinational corporations hedge currencies, and pension funds hedge equity exposure. Liquid, standardized contracts with clearinghouse guarantees let these firms transfer price risk without negotiating a separate bilateral agreement for every trade.