Cash and Carry Arbitrage

What Is Cash and Carry Arbitrage?

Cash and carry arbitrage is a trading strategy that buys an asset in the spot market and sells a related futures contract when the futures price is high enough to cover the cost of holding the asset. The trader carries the asset until the futures contract is closed, cash-settled, or delivered against.

The strategy is often discussed in commodities, Treasury futures, equity index futures, and digital assets. In theory, it exploits a gap between the futures price and the fair value implied by spot price, financing cost, storage cost, income, and other carrying costs.

How the Trade Works

A trader buys the underlying asset today and simultaneously sells a futures contract for future delivery or settlement. If the futures price is high enough, the trader expects the futures sale to more than cover the spot purchase cost plus the costs of financing and carrying the asset.

At or before expiration, the trader closes the positions. In a physically deliverable contract, the asset may be delivered into the futures contract. In a cash-settled contract, the trader closes or settles the futures position and sells or unwinds the spot exposure separately.

Cost-of-Carry Logic

A simplified fair-value relationship is:

Cost of carry can include interest, storage, insurance, financing spreads, borrowing costs, custody, and other holding costs. Income can include dividends, coupons, lease rates, or convenience yield. The relevant inputs depend on the asset.

Example

Suppose an asset trades for $100 in the spot market. The cost to finance and hold it until futures expiration is $3, and the asset pays no income. A futures price above $103 may suggest a potential cash-and-carry opportunity before transaction costs, margin, taxes, borrowing limits, and execution risk.

If the futures price is $106, the apparent spread is $3. The trader would still need to confirm that the asset can be bought, financed, stored, hedged, and delivered or unwound as expected.

Risks That Matter

The strategy is often described as arbitrage, but real-world frictions matter. Financing rates can change. Margin requirements can rise. Storage or custody can fail. Borrowing costs can be higher than assumed. Futures and spot positions may not match perfectly. Delivery rules can be complex, especially when cheapest-to-deliver optionality matters.

Counterparty and exchange risk also matter. In stressed markets, basis relationships can widen before converging. A trader with leverage may be forced to unwind before the expected convergence occurs.

What Investors Watch

Cash and carry activity can affect futures pricing by pulling overpriced futures back toward fair value. When many traders can finance and execute the trade cheaply, arbitrage pressure can be strong. When balance sheets are constrained, margin costs are high, or delivery is difficult, price gaps can persist longer.

The trade is also a useful reminder that futures prices are not just forecasts. They embed financing, carry, convenience, income, and market-structure effects.

Reverse Cash and Carry

The opposite trade is reverse cash and carry arbitrage. That structure can involve shorting the spot asset and buying futures when the futures price is too low relative to fair value. It may be harder to execute because borrowing the asset, maintaining the short, and managing recalls can be costly or impossible.

The Bottom Line

Cash and carry arbitrage buys the spot asset and sells the futures contract when the futures price appears rich relative to carrying value. The idea is simple, but the real trade depends on funding, margin, delivery rules, liquidity, taxes, and whether the apparent spread survives all costs.