The index value represents consensus forecast value. The consensus forecast is calculated as the median value. The forecasts of market participants for the last 28 days, including the calculation date, are included in the calculation. The most recent forecast from each participant is taken into account in the calculation. Base Asset – Aluminum. The aluminum price is a continuous physically settled instrument on the London Metal Exchange with approved designations P1020A and Al99.70, used in metallurgy and for hedging in the transportation and packaging sectors.