1 Introduction 2 Bloomberg Commodities Index 3 Reconstructing Bloomberg Commodities Index 3.1 Simplifying the weights 3.2 Curve Shape 3.3 The effect of roll yield 3.4 Index Proxy 3.5 Index Proxy Performance Attribution 3.6 Curve Shape and Annualised Return 3.7 Long Backwardated Commodities 3.8 Short Contango Commodities 3.9 Combination Portfolio 4 Trend System 4.1 BCOM commodities 4.2 Larger universe of commodities 5 Conclusions 1 Introduction We get asked often is if we have a long-only commodities product or if we can give investors access to long-only commodities exposure.