Normal backwardation
Based on Wikipedia: Normal backwardation
In the early 1980s, a bizarre and fleeting anomaly rippled through the silver market: for a single day, the price of silver futures dipped below the physical spot price, creating a condition that economists would call normal backwardation. It was a momentary glitch, born as metal was physically shuffled from COMEX warehouses to CBOT facilities, but it highlighted a fundamental tension that has plagued commodity traders for centuries. While the gold market has historically remained stubbornly positive, with futures prices consistently above spot prices since trading began on the Winnipeg Commodity Exchange in 1972, silver and other industrial commodities frequently flip into this inverted state. This phenomenon is not merely a technicality of financial charts; it is a window into the psychology of risk, the mechanics of supply chains, and the enduring debate over whether markets are rational or driven by the desperate need to hedge.
To understand why this matters, one must first strip away the jargon and look at the basic mechanics of a futures contract. When a trader buys a futures contract, they are agreeing to purchase a commodity at a specific price on a specific date in the future. In a perfectly efficient world with no frictions, the price of that contract should simply reflect the current spot price plus the cost of holding that asset until delivery—storage, insurance, and the interest lost by not having the cash in a bank. This is the cost of carry. When the futures price is higher than the spot price by exactly this amount, the market is in a state of equilibrium. However, markets are rarely perfect, and when the futures price trades below the expected spot price at maturity, the market is said to be in backwardation.
This creates a downward-sloping curve, often described as "inverted." Contracts for dates further in the future trade at even lower prices than those closer to the present. It is a counterintuitive setup. Why would anyone agree to sell a commodity in the future for less than it is worth today? The answer lies in the invisible hand of risk transfer. In a state of backwardation, the futures contract price includes a compensation premium. The holder of the physical asset—the producer, the miner, the farmer—is willing to sell their future output at a discount. Why? Because they are desperate to lock in a price and eliminate the uncertainty of future market fluctuations. They are paying a premium, in the form of a lower sale price, to transfer the risk of price volatility to the speculator who buys the futures contract.
This dynamic leads to a critical distinction that often confuses students of finance. The term "backwardation" is frequently used with two slightly different meanings. In strict academic theory, it refers to a situation where the futures price is lower than the expected future spot price. This is the "normal" backwardation posited by Keynes. However, in the rough-and-tumble of industry parlance, the term is often applied simply when the futures price is lower than the current spot price. This second definition, sometimes called "positive basis," is what traders see on their screens. It implies that the market is so tight, or so fearful of immediate shortages, that the cost of borrowing the asset (the lease rate) has skyrocketed, pushing the spot price up and the futures price down.
The theoretical underpinnings of this phenomenon were famously articulated by John Maynard Keynes in his 1930 masterpiece, A Treatise on Money. In Chapter 29, Keynes argued that backwardation is not an aberration or a sign of market failure. Instead, he posited it as the natural state of commodity markets. His logic was rooted in the behavior of market participants. Producers, such as oil drillers or wheat farmers, are inherently more motivated to hedge their risk than consumers. A farmer knows that if prices crash at harvest, they may go bankrupt. They need certainty. Consumers, on the other hand, can often absorb price spikes or find substitutes. Therefore, the aggregate pressure from producers to sell futures outweighs the pressure from consumers to buy them. To induce speculators to take the other side of these trades, the market must offer them a reward. That reward is the expectation that the spot price at maturity will be higher than the futures price today. The speculator buys low, waits, and sells high, pocketing the difference as a risk premium.
"In commodity markets, backwardation is not an abnormal market situation, but rather arises naturally as 'normal backwardation' from the fact that producers of commodities are more prone to hedge their price risk than consumers."
This academic stance sparked a dispute that continues to this day. Critics argue that backwardation is indeed abnormal, signaling a genuine supply insufficiency in the physical spot market. If you cannot get the physical commodity because it is all tied up in warehouses or simply doesn't exist, the spot price explodes, forcing the futures curve into inversion. This view suggests that backwardation is a symptom of a broken supply chain, whereas the Keynesian view sees it as a feature of the risk-transfer mechanism. The truth likely lies somewhere in the middle, depending on the specific commodity and the time horizon.
Nowhere is this dynamic more visible than in the energy and industrial metals markets, where seasonal factors and physical constraints play a massive role. Unlike money commodities like gold or silver, which are stored in vaults and rarely face immediate physical shortages, perishable and soft commodities are prone to frequent backwardation. Consider the wholesale commercial gas market in March 2013. For that month, the market plunged into backwardation. The price of the two-year contract fell below the price of the one-year contract. This was not a theoretical exercise; it was a reflection of the immediate reality of gas storage and winter demand. Traders knew that gas available today was worth more than gas available in two years, likely due to seasonal storage costs or anticipated shifts in supply. The market was pricing in a scarcity that was expected to ease over time.
However, the history of backwardation is not always a story of natural market forces. Sometimes, it is a story of manipulation. A notorious example occurred in 1990 involving copper and Yasuo Hamanaka, the infamous trader for Sumitomo Corporation. In what became known as the "Sumitomo copper affair," the market entered a state of backwardation that many analysts attributed to Hamanaka's massive, unauthorized positions. By cornering the market and manipulating supply perceptions, he created an artificial tightness that drove spot prices above futures prices. The resulting backwardation was not a sign of a natural risk premium but a symptom of a market rigged by a single actor's gamble. It serves as a grim reminder that while theory suggests backwardation is a mechanism for risk transfer, it can also be a weapon in the arsenal of market manipulators.
The terminology itself has a colorful history that predates modern futures exchanges. The word "backwardation" originated in mid-19th century England, derived simply from the word "backward." On the London Stock Exchange of that era, settlement days were fixed, often occurring on a fortnightly schedule. If a seller had sold stock but could not or did not wish to deliver it on the settlement day, they had to "carry over" their position to the next settlement cycle. To do this, they had to pay a fee to the buyer or to a third party who lent them the stock. This fee was called "backwardation." It was essentially a lease rate for borrowing stock to cover a short sale. This practice was common for speculative trading, allowing investors to maintain short positions without immediate delivery. Before 1930, this fee was a standard part of the London market, but its usage declined as options were reintroduced in 1958 and modern settlement systems evolved.
Crucially, the historical meaning of backwardation was distinct from its modern commodity usage. In the 19th century, the fee did not necessarily indicate a shortage of the stock; it was simply the cost of borrowing. Today, when we speak of backwardation in commodities, we are often referring to a situation where the cost of carry is negative, or where the convenience yield—the benefit of holding the physical asset rather than the futures contract—exceeds the risk-free rate and storage costs. If it costs more to lease silver for 30 days than for 60 days, the silver lease rates are said to be "in backwardation." Negative lease rates can indicate that bullion banks are demanding a significant risk premium to sell silver futures, effectively betting that the physical scarcity will persist.
The ambiguity of the term remains a source of confusion. Without the qualifier "normal," "backwardation" can refer to either the theoretical condition (futures < expected spot) or the observable market condition (futures < current spot). The Encyclopædia Britannica, in both its eleventh (1911) and fifteenth (1974) editions, wrestled with these definitions, noting the subtle shifts in meaning as markets evolved. Modern researchers, such as Mike Riess in his 2003 paper on market manipulation, continue to dissect these nuances, pointing out that while the term originated in stock trading, its application to commodities requires a different lens focused on physical deliverability and storage constraints.
The London Metal Exchange (LME) has frequently grappled with these conditions, issuing advice to members and launching investigations when backwardation signals potential manipulation. In 1999, the LME advised members on primary aluminium trading after backwardation patterns raised red flags. In 2005, a press release regarding the temporary suspension of warrants in New Orleans highlighted how physical bottlenecks can force the market into inversion. These events underscore that backwardation is not a static state but a dynamic response to the interplay of physical logistics and financial expectations.
Why does this matter to the average observer, or even the seasoned investor? Because backwardation changes the math of investing. In a market in contango (the opposite state), holding a futures contract is a losing proposition over time due to the "roll cost"—the need to sell a near-term contract at a lower price and buy a longer-term contract at a higher price. In backwardation, the opposite occurs. As the contract approaches maturity, it converges to the higher spot price, creating a "roll gain." This makes commodities in backwardation attractive to long-term investors who can harvest this yield, effectively getting paid to hold the asset. It is a mechanism that rewards patience and punishes speculation in the opposite direction.
Yet, the persistence of backwardation in certain markets challenges the Efficient Market Hypothesis. If markets were perfectly efficient, the risk premium would be arbitraged away, and the curve would flatten. The fact that it doesn't suggests that there are frictions—transaction costs, regulatory hurdles, or simply the behavioral bias of producers who are terrified of price crashes. The debate between the Keynesian view (that backwardation is a natural equilibrium) and the neoclassical view (that it is an anomaly) remains unresolved. Some economists argue that the premium paid to speculators is compensation for bearing the true economic risk of production. Others argue it is a distortion caused by market imperfections.
The silver market of the 1980s and the copper affair of 1990 serve as historical bookends to this discussion. One was a momentary, logistical glitch; the other was a deliberate, fraudulent construction. Both resulted in backwardation, but for entirely different reasons. This duality is what makes the concept so fascinating. It is a mirror that reflects the health of the physical economy. When the curve inverts, it tells a story. Sometimes it tells a story of seasonal scarcity, like the gas market in 2013. Sometimes it tells a story of risk aversion, as Keynes predicted. And sometimes, as with Sumitomo, it tells a story of hubris and manipulation.
In the end, the concept of normal backwardation forces us to confront the reality that financial markets are not just abstract numbers on a screen. They are inextricably linked to the physical world. The price of a futures contract is not just a prediction of the future; it is a statement about the present constraints of supply, the costs of storage, and the psychological state of the people who own the goods. Whether it is the wheat in a silo, the oil in a pipeline, or the copper in a warehouse, the shape of the curve reveals the hidden costs of doing business in a world where uncertainty is the only constant.
The term "backwardation" may have started as a fee to delay delivery on the London Stock Exchange in the 1800s, but its evolution into a central concept of modern commodity theory illustrates the complexity of global trade. It is a reminder that in the world of finance, the path to equilibrium is rarely a straight line. Sometimes, the market must go backward to move forward. The persistent presence of backwardation in various markets, from the fleeting moment in silver to the seasonal shifts in gas, proves that the forces of supply, demand, and risk are far more potent than any theoretical model can fully capture. As long as producers fear price crashes and speculators demand a premium for taking the other side, the curve will continue to invert, offering a constant, inverted promise of future value.
For the reader trying to make sense of the current oil market or any volatile commodity sector, understanding backwardation is essential. It is the signal that the market is pricing in a premium for immediate possession. It is the market's way of saying that the cost of waiting is too high. Whether that cost is due to a natural shortage, a seasonal spike, or a speculative frenzy, the result is the same: the futures curve turns down, and the price of certainty becomes the most expensive commodity of all. The debate between Keynes and his critics may continue in academic journals, but in the trading pits of Chicago and the exchanges of London, the answer is written in the daily price ticks. Backwardation is not a bug in the system; it is a feature of the human condition in the face of risk.