Don’t Trade Last Week’s Silver Story!

Since February of this year, there has been at least one silver contract in backwardation. Since May 31, the September contract has been backwardated. But that has now come to an end.

Before we get to the graphs, let’s define our terms. Some people look at a graph of (cleared trade) prices. If they find a futures price that is below a spot price they declare it to be backwardation. One problem with this approach is that the quotes may not be simultaneous. A contract that is close to expiration often has low trading volume, and so one could be comparing the current spot price to a contract price that cleared minutes ago. The spread we’re looking at is small, relative to the normal price jitter that occurs minute to minute. This signal would be lost in the noise inherent to such an approach.


There is another problem with using cleared prices. They don’t tell us if someone took a bid or an offer. Profit-seeking arbitrageurs look at spreads, because spreads determine where they can make money. We want to understand this, not necessarily to compete with the arbitrageurs, but to understand what the market is offering them and why. If we know what to look for, spreads and changes to spreads tell us more than prices and changes in price. We are doing fundamental analysis, as opposed to technical analysis.

The basis is the (annualized) profit offered in the market if one buys gold and at the same time sells a gold future. This is a gold carry. The cobasis is the profit offered if one sells gold and at the same time buys a future, also called decarrying. These arbitrages involve no price risk.

This is why we define the basis = Future(bid) – Spot(ask). If one is buying gold in the spot market, one must pay the ask, and likewise to sell a gold future one must take the bid. When the basis is positive, the market is in a state called contango.

Similarly, the cobasis = Spot(bid) – Future(ask). One sells gold metal in the spot market on the bid, and buys a future to recover the same gold position at the ask. Backwardation is when the cobasis is positive.

Contango (to vastly oversimplify) means the good is relatively abundant. Why? There is enough of it  that the marginal buyer is carrying it. When a good is in shortage, one does not see it going into warehouses. Backwardation means the good is in shortage. It is so short that it comes out of warehouses. Carrying is really storing a good in a warehouse (think about it), and decarrying is really taking it out of a warehouse.

With this background, the significance of silver’s recent price move comes into sharp focus. For half a year, silver has been in backwardation. The peak cobasis reading was 1% (annualized), which works out to around 3 or 4 cents an ounce. The silver price was around $19.60 at that time.

Since then, the price has rocketed to more than $23, a gain of about 18%. In the process, the cobasis has collapsed to zero. What is especially remarkable is that this has occurred in the middle of the contract roll.

With futures, if you intend to take delivery and pay cash for the metal, you hold the contract until it is replaced with title to the metal held in a COMEX vault. If you do not wish to take delivery or if you don’t have the cash (most futures traders use leverage), then you must sell the contract before First Notice Day. If you want to keep a long position in the metal, you can buy the next liquid contract month (currently December). First Notice Day of the September contract is August 30. As of Friday, around 38% of those who had September contracts have sold them, and the rate of selling is accelerating (it will peak this week).

Here is a graph showing the cobasis for September and the basis for December.



Keith-silver basis and cobasis

Silver cobasis (September) and basis (December) – click to enlarge.



I say this is “remarkable” because all of this selling pressure should tend to make the cobasis for the September contract increase. This is just how the mechanics of the contract roll work.

Instead we see that against the mechanics of the roll, the cobasis has collapsed. Also, another interesting observation is that the December basis, which has been negative since June 20, has now risen to zero. December silver is on the verge of being in contango.

Traders are looking at the charts, wondering if they should bet on silver based on the recent breakout. I can’t tell you that the price couldn’t go higher (or a lot higher). But the data is telling you that the fundamentals of supply and demand are no longer supporting the case for the price to rise. The data is saying that the price has not been driven higher by buying of physical metal (either hoarders or banks desperate to cover short positions). The price has been driven by speculators in futures.

Here is a picture showing the price action of gold, silver, and the euro. Credit conditions drove these moves, and this is a consideration outside the fundamentals of silver. A tight correlation with the euro is hardly a ringing endorsement to buy silver.




Gold, silver, and euro prices in US Dollars – click to enlarge.



Caveat emptor argenteum.


Monetary Metals publishes the Last Contango Gold Basis Report weekly, which shows updates of the gold and silver bases. It is free (registration required):


Charts via


Dr. Keith Weiner is the president of the Gold Standard Institute USA, and CEO of Monetary Metals.  Keith is a leading authority in the areas of gold, money, and credit and has made important contributions to the development of trading techniques founded upon the analysis of bid-ask spreads.  Keith is a sought after speaker and regularly writes on economics.  He is an Objectivist, and has his PhD from the New Austrian School of Economics.  He lives with his wife near Phoenix, Arizona.





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