Copper prices are posting moderate pressure this morning and have fallen back towards the middle of their recent trading range. Shanghai copper prices finished lower, with some traders pointing towards lukewarm economic data from the US and China as the main negative factor for the market. The negative tone of outside markets are also widely seen as weighing on December copper, as mild strength in the Dollar has combined with sluggish Asian equity markets. Disappointing economic data from the Euro zone has fueled risk concerns from that region, However, today's sharp drop in LME copper stocks was an eighth straight daily decline and put them at their lowest levels since late 2008.