Backwardations in the forward curves of most metals on the London Metal Exchange have constrained warrant trading for the past few weeks.
Copper warrants, for example, have been "impossible" to trade since steep backwardations emerged in copper's forward curve in mid-October, traders widely agreed.The LME copper warrant premium in Asia has held steady at $25-40 per tonne since early September when the three-month price spiked while stocks were being drawn down from...