Confusing Spot and Futures

A fundamental source of disappointment in commodity investing is the confusion between the spot price and the futures price. Investors read that crude oil is trading at $75 per barrel, buy an oil ETF, and then watch it underperform relative to the newspaper price. They believe the ETF is poorly managed. In reality, the ETF is not tracking the spot price; it is tracking a rolling futures contract, which behaves differently. Understanding this distinction is the foundation of realistic commodity investing.

Spot Price Versus Futures Price

The spot price is the price at which a commodity trades for immediate delivery. When you read that gold is at $2,050 per ounce, that is the spot price—the price you would pay today to receive the gold today. Spot markets are real but limited. Most spot commodity transactions are wholesale transactions between producers and industrial consumers. Retail investors cannot easily buy at the spot price; they would need to take physical delivery of the commodity.

A futures contract is a standardized agreement to buy or sell a specified quantity of a commodity at a specified price on a specified future date. The crude oil December contract is an agreement to buy 1,000 barrels of crude oil in December at a price agreed upon today. Futures trade on exchanges; they are liquid and standardized. But they are not spot contracts. They are commitments to future transactions.

The price of a futures contract is not the same as the spot price. It is higher or lower depending on the cost of carrying the commodity from now until the contract expiration. If it costs $5 per barrel to store and insure crude oil for three months, the three-month crude oil futures contract will trade at roughly $5 per barrel higher than the spot price. If the market is in backwardation (which is rarer for crude), the futures contract might trade lower than the spot.

The Basis: The Gap Between Spot and Futures

The basis is the difference between the spot price and the futures price: Basis = Spot Price − Futures Price.

In a normal contango market, the basis is negative. Spot crude is at $75, and the three-month futures are at $78. The basis is $75 − $78 = −$3. The futures trade at a premium to the spot because of storage, insurance, and financing costs.

The basis is not a flaw in the market; it is the price of convenience and immediacy. If you want crude oil today, you pay the spot price. If you will accept it three months from now, you pay less—the futures price. The buyer who waits benefits from the lower price; the buyer who wants it now pays the premium.

For a commodity ETF, this has enormous implications. The ETF cannot deliver its holdings today. It holds futures contracts that expire on future dates. The fund buys futures contracts (at a premium to spot), and when they expire, it rolls into the next contract (at a premium to the new spot price). The fund is always paying the premium; the holder of the ETF always captures the basis as a cost.

The Mechanism of Underperformance

Consider a simplified example. You invest $100,000 in a crude oil ETF on January 1, when crude is trading at $75 per barrel (spot) and the March futures contract is at $78 per barrel. The ETF manager buys the March contract at $78.

Crude oil spot price does not move. It remains at $75 on February 28, as the March contract approaches expiration. But the March futures contract has converged toward the spot. It is now trading at $75.50, because there are only a few days until expiration and the contract must eventually settle at or near the spot price.

On February 28, the ETF manager rolls. He sells the March contract at $75.50 and buys the June contract at $79 (because June is three months away and carry costs apply). The roll locked in a loss: the manager paid $78 per barrel (average) to buy March and $75.50 to sell, realizing a loss of $2.50 per barrel. Simultaneously, he bought June at $79, rebuilding the premium.

Over the next four months, spot remains at $75. In June, the fund repeats the process. Sell June at (approximately) $75, buy September at $79. Another $4 loss locked in.

By December, the fund has rolled four times. Each roll cost roughly $3–4 per barrel in cumulative basis. The investor is down $12–16 per barrel on a commodity that did not move. The spot price of oil is unchanged at $75, but the ETF is worth roughly 20% less than it would be if the investor held spot crude directly. Spot and futures have diverged entirely.

Historical Case: The 2008 USO Collapse

This is not hypothetical. The U.S. Oil Fund (USO), one of the largest crude oil ETFs, suffered from exactly this problem during the 2008 oil price collapse.

In July 2008, crude oil was at $147 per barrel. USO was trading near parity to spot oil. Then oil crashed. By December 2008, crude was at $30 per barrel—a 79% decline. Investors who bought USO at $147 and held to December expected a 79% loss, matching the spot decline.

Instead, they experienced a 90%+ loss. USO fell from $147 to $10, worse than the underlying spot crude oil decline. The additional loss came from rolling futures contracts through extreme contango. As oil crashed, storage became more expensive (absolute terms) and the convenience premium climbed. USO buyers rolled forward at massive losses. The ETF structure amplified the damage.

This is not USO-specific. It is inherent to any futures-based commodity ETF in deep contango. The SEC has warned repeatedly about this risk in its publications on commodity ETF investing.

Understanding What You Own

When you buy a commodity ETF, you do not own the commodity. You own a position in rolling futures contracts. This is not a problem inherent to ETFs; it is the structure of commodity investing. But it means your returns will differ from the spot price.

In a backwardation market (near-month futures higher than far-month futures), rolling forward actually adds value. The fund buys expensive near-month contracts and sells cheaper far-month contracts, realizing gains on each roll. Over time, backwardation-driven gain can exceed the commodity's price appreciation.

In a contango market (far-month futures higher than near-month futures), rolling forward subtracts value. The fund buys cheap near-month and sells expensive far-month, realizing losses on each roll. The drag compounds over time.

A disciplined commodity investor checks the futures curve before committing capital. If the commodity is in steep contango, roll costs will be a headwind. If it is in backwardation, rolling will be a tailwind. If the commodity is in contango but you believe prices will rise sharply, you may accept the roll cost as a reasonable expense for your expected appreciation.

Physical Commodities Versus Futures-Based Products

One reason some investors prefer physical commodity ownership (gold bars in a vault, barrels of oil in a tank) is to avoid the futures curve entirely. If you own spot gold, you do not care about the gold futures curve. You own the commodity, not a claim on future delivery.

But physical ownership brings its own costs—storage, insurance, degradation—that can exceed futures roll costs. There is no free lunch. The choice is between roll costs (for futures) and storage costs (for physical), both of which drain returns.

For most investors, the practical reality is that they cannot hold spot commodities costlessly. A commodity ETF with embedded roll costs and an explicit fee may be more efficient than trying to own physical commodities, especially for small positions.

Reading the Basis Daily

A sophisticated investor monitors the commodity futures curve daily. When gold is in backwardation (near-month contracts higher than far-month), it signals that convenience is expensive—spot gold is scarce—and rolling will benefit the holder. When gold is in steep contango (far-month significantly higher than near-month), it signals that storage costs are high and rolling will be a drag.

Checking the curve takes 30 seconds using public sources like the CME or FINRA databases. The basis tells you whether your commodity position is benefiting or suffering from the roll. Over a 10-year horizon, understanding the basis is the difference between meeting your return expectations and falling short.

Key Takeaway

The spot price of crude oil at $75 and the March futures contract at $78 are two different things. A commodity ETF buying the futures at $78 and rolling forward every month will not track the spot price. It will track a futures index that compounds carry costs (or carry benefits) embedded in the basis. Disappointing returns from a commodity ETF are often not the result of poor management; they are the mathematical consequence of rolling futures in a contango market. Before investing, understand whether the commodity is in contango or backwardation, estimate the annual roll cost based on the curve, and ask yourself whether that cost is acceptable given your return expectations. If the commodity is in steep contango and you do not expect significant price appreciation, the investment does not make mathematical sense, regardless of the ETF's quality.

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References

• SEC Office of Investor Education and Advocacy. "Understanding Commodity Futures and ETF Structures." sec.gov, 2023.
• CFTC Markets Review. "Futures Basis and the Spot-Futures Relationship." cftc.gov, 2024.
• FINRA Investor Alert. "Commodity ETFs: What You Need to Know." finra.org, 2022.
• Learn Commodities. Spot Market Basics. Track D documentation.
• Learn Commodities. Futures Contract Mechanics. Track D documentation.
• Learn Commodities. Ignoring Roll Cost. Chapter 14 documentation.