
SHANGHAI, Dec 3 (Reuters) - Copper advanced on Wednesday and hovered near a peak set this week, as supply concerns underpinned overall bullishness around the metal, while the market turned its attention to the U.S. Federal Reserve's interest rate decision next week.
The most-traded copper contract on the Shanghai Futures Exchange SCFcv1 reversed the session's initial losses to close daytime trading 0.13% higher at 89,210 yuan ($12,630.79) per metric ton, extending gains to the eighth straight session.
Shanghai copper followed the benchmark three-month copper CMCU3 in London, which eased from an all-time high on lower risk appetite and profit-taking.
But London copper also reversed Tuesday's losses to rise 0.93% to $11,249 a ton as of 0705 GMT.
Optimism over another U.S. central bank rate cut on December 10 supported the upward momentum.
The cut is expected despite limited availability of economic data due to the 43-day U.S. government shutdown, with a 25 bps move already been priced in.
Policymakers could risk "creating unnecessary market disruption" by pushing back against the expectation, analysts at Sucden Financial said in a note.
All base metals gained across the Shanghai and London exchanges.
Elsewhere among SHFE base metals, aluminium SAFcv1 rose 0.39%, zinc SZNcv1 added 0.22%, lead SPBcv1 edged 0.17% higher, nickel SNIcv1 was up 0.11%, and tin SSNcv1 surged 2.15%.
Among other LME metals, aluminium CMAL3 rose 0.79%, zinc CMZN3 gained 0.44%, lead CMPB3 added 0.58%, nickel CMNI3 climbed 0.78% and tin CMSN3 advanced 1.56%.
($1 = 7.0629 Chinese yuan renminbi)