The graph depicts how the price of a single forward contract will behave through time in relation to the expected future price at any point time. A contract in contango will decrease in value until it equals the spot price of the underlying at maturity. Note that this graph does not show the forward curve (which plots against maturities on the horizontal).

Contango is the market condition wherein the price of a forward or futures contract is trading above the expected spot price at contract maturity. The resulting futures or forward curve would typically be upward sloping (i.e. "normal"), since contracts for further dates would typically trade at even higher prices. (The curves in question plot market prices for various contracts at different maturities—cf. term structure of interest rates)

A contango is normal for a non-perishable commodity that has a cost of carry. Such costs include warehousing fees and interest forgone on money tied up, less income from leasing out the commodity if possible (e.g. gold).[1] For perishable commodities, price differences between near and far delivery are not a contango. Different delivery dates are in effect entirely different commodities in this case, since fresh eggs today will not still be fresh in 6 months' time, 90-day treasury bills will have matured, etc.

The opposite market condition to contango is known as backwardation.



A normal forward curve depicting the prices of multiple contracts, all for the same good, but of different maturities, slopes upward. Let us say, for example, that a forward oil contract for twelve months in the future is selling for $100 today, while today's spot price is $75. The expected spot price twelve months in the future may actually still be $75. To purchase a contract at more than $75 supposes a loss of $25 to the agent who "bought forward" as opposed to waiting a year to buy at the spot price when oil is actually needed. But even so there is utility for the forward buyer in the deal. Experience tells major end users of commodities (such as gasoline refineries, or cereal companies that use great quantities of grain) that spot prices are unpredictable. Locking in a future price puts the purchaser "first in line" for delivery even though the contract will, as it matures, converge on the spot price as shown in the graph. In uncertain markets where end users must constantly have a certain input of a stock of goods, a combination of forward (future) and spot buying reduces uncertainty. An oil refiner might purchase 50% spot and 50% forward, getting an average price of $87.50 averaged for one barrel spot ($75) and the one barrel bought forward ($100). This strategy also results in unanticipated, or "windfall" profits: If the contract is purchased forward twelve months at $100 and the actual price is $150, the refiner will take delivery of one barrel of oil at $100 and the other at a spot price of $150, or $125 averaged for two barrels: a gain of $25 relative to spot prices.

Sellers like to "sell forward" because it locks in an income stream. Farmers are the classic example: by selling their crop forward when it is still in the ground they can lock in a price, and therefore an income, which helps them qualify, in the present, for credit.

The graph of the "life of a single futures contract" (as shown on the right) will show it converging towards the spot price. The contango contract for future delivery, selling today, is at a price premium relative to buying the commodity today and taking delivery. The backwardation contract selling today is lower than the spot price, and its trajectory will take it upward to the spot price when the contract closes. Paper assets are no different: for example, an insurance company has a constant stream of income from premiums and a constant stream of payments for claims. Income must be invested in new assets and existing assets must be sold to pay off claims. By investing in the purchase and sale of some bonds "forward," in addition to buying spot, an insurance company can smooth out changes in its portfolio and anticipated income.

Contango is a potential trap for unwary investors. Exchange-traded funds (ETFs) provide an opportunity for small investors to participate in commodity futures markets, which is tempting in periods of low interest rates. Between 2005 and 2010 the number of ETFs rose from two to ninety-five, and the total assets rose from 3.9 to nearly 98 billion USD in the same period.[2] Because the normal course of a futures contract in a market in contango is to decline in price, a fund composed of such contracts buys the contracts at the high price (going forward) and closes them out later at the usually lower spot price. The money raised from the low priced, closed out contracts will not buy the same number of new contracts going forward. Funds can and have lost money even in fairly stable markets. There are strategies to mitigate this problem, including allowing the ETF to create a stock of precious metals for the purpose of allowing investors to speculate on fluctuations in its value. But storage costs will be quite variable, and copper ingots require considerably more storage space, and thus carrying cost, than gold, and command lower prices in world markets: it is unclear how well a model that works for gold will work with other commodities.[2] Industrial scale buyers of major commodities, particularly when compared to small retail investors, retain an advantage in futures markets. The raw material cost of the commodity is only one of many factors that influence their final costs and prices. Contango pricing strategies that catch small investors by surprise are intuitively obvious to the managers of a large firm, who must decide whether to take delivery of a product today, at today's spot price, and store it themselves, or pay more for a forward contract, and let someone else do the storage for them.[3]

The contango should not exceed the cost of carry, because producers and consumers can compare the futures contract price against the spot price plus storage, and choose the better one. Arbitrageurs can sell one and buy the other for a theoretically risk-free profit (see rational pricing—futures).

If there is a near-term shortage, the price comparison breaks down and contango may be reduced or perhaps even reverse altogether into a state called backwardation. In that state, near prices become higher than far (i.e., future) prices because consumers prefer to have the product sooner rather than later (see convenience yield), and because there are few holders who can make an arbitrage profit by selling the spot and buying back the future. A market that is steeply backwardated—i.e., one where there is a very steep premium for material available for immediate delivery—often indicates a perception of a current shortage in the underlying commodity. By the same token, a market that is deeply in contango may indicate a perception of a current supply surplus in the commodity.

In 2005 and 2006 a perception of impending supply shortage allows traders to take advantages of the contango in the crude oil market. Traders simultaneously bought oil and sold futures forward. This led to large numbers of tankers loaded with oil sitting idle in ports acting as floating warehouses.[4] (see: Oil-storage trade) It was estimated that perhaps a $10–20 per barrel premium was added to spot price of oil as a result of this.

If such is the case, the premium may have ended when global oil storage capacity became exhausted; the contango would have deepened as the lack of storage supply to soak up excess oil supply would have put further pressure on prompt prices. However, as crude and gasoline prices continued to rise between 2007 and 2008 this practice became so contentious that in June 2008 the Commodity Futures Trading Commission, the Federal Reserve, and the U.S. Securities and Exchange Commission (SEC) decided to create task forces to investigate whether this took place.[5]

A crude oil contango occurred again in January 2009, with arbitrageurs storing millions of barrels in tankers to profit from the contango (see oil-storage trade). But by the summer, that price curve had flattened considerably. The contango exhibited in Crude Oil in 2009 explains the discrepancy between the headline spot price increase (bottoming at $35 and topping $80 in the year) and the various tradeable instruments for Crude Oil (such as rolled contracts or longer-dated futures contracts) showing a much lower price increase.[6] The USO ETF also failed to replicate Crude Oil's spot price performance.

Interest rates

If short-term interest rates were expected to fall in a contango market, this would narrow the spread between a futures contract and an underlying asset in good supply. This is because the cost of carry will fall due to the lower interest rate, which in turn results in the difference between the price of the future and the underlying growing smaller (i.e. narrowing). An investor would be advised to buy the spread in these circumstances: this is a calendar spread trade where the trader buys the near-dated instrument and simultaneously sells the far-dated instrument (i.e. the future).[7]

If, on the other hand, the spread between a future traded on an underlying asset and the spot price of the underlying asset was set to widen, possibly due to a rise in short-term interest rates, then an investor would be advised to sell the spread (i.e. a calendar spread where the trader sells the near-dated instrument and simultaneously buys the future on the underlying).[7]

2007–2008 world food price crisis

In a 2010 article in Harper's Magazine, Frederick Kaufman argued the Goldman Sachs Commodity Index caused a demand shock in wheat and a contango market on the Chicago Mercantile Exchange, contributing to the 2007–2008 world food price crisis.[8][9][10]

In a June 2010 article in The Economist, the argument is made that Index-tracking funds (to which Goldman Sachs Commodity Index was linked) did not cause the bubble. It describes a report by the Organisation for Economic Co-operation and Development that used data from the Commodity Futures Trading Commission to make the case.[11]

Origin of term

The term originated in mid-19th century England[12] and is believed to be a portmanteau of "continuation", "continue"[13] or "contingent". In the past on the London Stock Exchange, contango was a fee paid by a buyer to a seller when the buyer wished to defer settlement of the trade they had agreed. The charge was based on the interest forgone by the seller not being paid.

The purpose was normally speculative. Settlement days were on a fixed schedule (such as fortnightly) and a speculative buyer did not have to take delivery and pay for stock until the following settlement day, and on that day could "carry over" their position to the next by paying the contango fee. This practice was common before 1930, but came to be used less and less, particularly after options were reintroduced in 1958. It was prevalent in some exchanges such as Bombay Stock Exchange (BSE) where it is still referred to as Badla.[14] Futures trading based on defined lot sizes and fixed settlement dates has taken over in BSE to replace the forward trade, which involved flexible contracts.[citation needed]

This fee was similar in character to the present meaning of contango, i.e., future delivery costing more than immediate delivery, and the charge representing cost of carry to the holder.

See also


Specific references:

  1. ^ Izabella Kaminska (2008). "It’s the BIS". The Financial Times. Retrieved 2010-09-01. 
  2. ^ a b Carolyn Cui, "Getting Tripped Up by the Contango: A futures-market quirk can hurt commodities returns—if investors aren't aware of it," The Wall Street Journal, 17 December 2010, pp. C5, C8.
  3. ^ Tatyana Shumsky and Carolyn Cui, "Trader Holds $3 Billion of Copper in London," The Wall Street Journal, 21 December 2010, quote a trader: "'Holding ready-for-delivery metals on an exchange isn't a cheap undertaking for traders, who are responsible for paying insurance, storage and financing costs." And 'the end game is to find somebody to buy something you have already bought for a higher price,' Mr. Threkeld says. 'The recent boom in metal prices has enabled traders to purchase the physical metal, sell a futures contract at a much higher price and still make a profit after paying for storage and insurance.'"
  4. ^ Davidson, Adam (August 24, 2006). "Analyst: Blame Investors for High Gas Prices". NPR News. Retrieved 2008-06-14. 
  5. ^ Mandaro, Laura (June 10, 2008). "CFTC to probe energy speculation with Fed, SEC". The Wall Street Journal Retrieved 2008-06-14. 
  6. ^ Liberty, Jez. "Crude Oil, Contango and Roll Yield for Commodity Trading". 
  7. ^ a b Morrissey, Bob (January 2009). Derivatives: The Official Learning and Reference Manual. London, United Kingdom: The Securities & Investment Institute. pp. 72–77. ISBN 978-1-906917-11-1. 
  8. ^ The Food Bubble: How Wall Street Starved Millions and got away with it, by Frederick Kaufman, Harper's, 2010 July
  9. ^ Democracy Now (radio show), Amy Goodman and Juan Gonzales, Interview with Frederick Kaufman, 2010 7 17
  10. ^ TRNN - Jayati Ghosh (6 May 2010). "Global Food Bubble". Pacific Free Press. Retrieved 30 July 2010. 
  11. ^ Clearing the usual suspects, Buttonwood, The Economist, 2010 6 24
  12. ^ Contango from
  13. ^ Mitchell, James (1908). Significant Etymology (or Roots, Stems, and Branches of the English Language). William Blackwood and Sons. p. 302. "Contango, probably a corruption of continue, a Stock Exchange phrase, meaning a sum of money, or a percentage, paid for accommodating a buyer in carrying an engagement to pay money for speculative purchases of stock, over to next account day; contango day, the second day before settling day." 
  14. ^ [1]

General references:

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