Only less
than two months ago, the International Copper Study Group forecasted at its
semi-annual meeting in Lisbon that after four years of supply deficit, the
copper market would swing into a surplus. While the ICSG estimates that the apparent
refined copper consumption exceeded supply in 2013 by 282 thousand tons. For
this year, the ICSG forecasts a supply surplus of 405 thousand tons. This swing
in the supply/demand-balance by 687 thousand tons is due to an increase in mine
production, which leads also to a rise of refined copper output. For this year,
global mine production is expected to increase by 4.7% to 18,904 thousand tons.
Refined copper production is forecast to rise faster than mine production by
6.5% to 22,362 thousand tons. The global copper consumption is predicted to
increase by only 3%, which is less than global GDP growth, to 21,957 thousand
tons.
A swing in
the supply/demand balance of the magnitude predicted by the ICSG should be
reflected in the development of copper stocks. According to the recent figures
published on May 22, 2014, by the ICSG in the press release for the Monthly
Copper Bulletin, global copper stocks increased by a total of 102 thousand tons
in the first two months of 2014. Inventories held in the warehouses of the
three major exchanges (LME, Shanghai and CME) dropped by 25.2 thousand tons in
the same period, which is in a clear contrast to the estimate of the ICSG for
the first two month. Since March, the fall of inventories accelerated. Despite
some temporary inventory builds at some exchanges, copper stocks are currently down
228 thousand tons YTD. This plunge of copper inventories at exchange warehouses
since the beginning of March is in such an obvious contrast to what one would
expect given the forecast of a 405 thousand tons supply surplus.
Certainly,
copper inventories are not only held in exchange warehouses. Producers and
consumers of copper also hold inventories, but one would expect that these
holdings are more determined by economic activity and opportunity costs. If we
take this into account, it appears rather unlikely that producers and consumers
have increased their inventory holding by the amount to explain the difference
between the change in the supply/demand-balance and exchange warehouse
inventories.
Furthermore,
if producers hold more inventories, then one would expect that they also want
to hedge the inventories, especially when the majority of forecasters predict a
change in the supply/demand balance. This should lead to a considerable
increase of open interest and falling copper prices. However, when copper
reached its low of the year so far in March, the LME copper futures open
interest was up only 7 thousand contracts compared to the end of 2013. In
addition, copper at the LME remained in a slight backwardation in mid-March.
But copper prices were in contango at the Shanghai Futures Exchange. LME open
interest in copper futures rose far stronger since mid-March to more than 340
thousand contracts at the start of this past week. This rise in open interest
was accompanied by a recovery of the copper price. This argues that not
producers are hedging against further falling prices due to a supply glut but
consumers hedge future demand. However, this behavior would be only rational if
consumers doubt that forecasts of a supply surplus depressing prices are
correct.
The other
explanation is that the copper supply surplus is held in bonded warehouses in
China and had been used for financing deals. In April, we analyzed the
development of the copper price in Shanghai and the inventories held at SHFE
warehouses. In 2012 and 2013, a structural break took place and inventories at
SHFE warehouses rose stronger as a model based on the development between 2009 and
2011 would have predicted. However, this development had not a major impact on
the price of copper. Other factors explained the price development far better. It
could not be ruled out, that the higher SHFE warehouse inventories were the
result of stocks moved out of bonded warehouses.
Thus,
doubts remain that the excess production of refined copper was absorbed by
stocks held in bonded warehouses in China for serving as collateral in
financing deals. Furthermore, it could not explain the decline of stock held in
exchange warehouse inventories
While total
exchange warehouse inventories decayed since the start of this year, stock held
in LME warehouses declined by 195 thousand tons and remained almost unchanged
in CME warehouses. At SHFE warehouses, inventories rose until the plunge of
copper prices, and then also sunk from 213.3 to 92.7 thousand tons, which
translates to a fall of 33.2 thousand tons since the end of 2013. It had been
reported at the end of April that China’s State Reserve Bureau bought copper.
However, according to the sources of the reports, the SRB bought from bonded
warehouses. But this does not explain the fall of copper stocks at SHFE
warehouses, unless the SRB also bought silently since mid-March copper in huge
amounts held in bonded and exchange warehouses.