The ICIS Global Petrochemical Index (IPEX) provides a capacity-weighted measure of the average change in petrochemical prices over time.
Dating back to January 2000, historical ICIS prices for a basket of 12 essential petrochemical products in the US, western Europe and northeast Asian markets are weighted by regional nameplate capacity to generate an index value. IPEX values are calculated in a live environment and where the price of a commodity is not available the latest available price is used to calculate the index.