Understanding Commodity Indices and Their Methodologies

As a portfolio manager, you are evaluating different methods of investing in commodities. One common way to gain exposure to commodity markets is through the use of commodity indices.

Suppose you encounter three different commodity indices: the S&P GSCI, the Bloomberg Commodity Index, and the Rogers International Commodity Index. Each of these indices utilizes different methodologies for determining their respective constituents and weightings.

Your client wants to know which of the following statements about commodity indices is accurate in regards to their methodology and asset coverage.