US copper futures ended up on Wednesday in an extension of a short-covering bounce from the prior session's slide to seven-month lows, though the overall trend still pointed lower, analysts said. Copper for December delivery closed up 3.90 cents at $3.3120 a lb on the New York Mercantile Exchange's COMEX division.
The session range spanned $3.2520 to $3.3315. Spot September gained 3.15 cents to finish at $3.3540. COMEX estimated final futures volume at a thin 10,979 lots, compared with the 19,097 lots recorded on Tuesday.