London Metal Exchange Index consists of 6 metals with the following weights: aluminim (42.8%), copper (31.2%), zinc (14.8%), lead (8.2%), nickel (2%) and tin (1%). Weightings of the six metals are derived from global production volume and trade liquidity averaged over the preceding five-year period. The index value is calculated as the sum of the prices for the three qualifying months multiplied by the corresponding weights, multiplied by a constant. This page includes a chart with historical data for LME Index. LME Index - actual data, historical chart and calendar of releases - was last updated on September of 2018.