The Office of the Chief Economist produces original research papers on a broad range of topics relevant to the CFTC’s mandate to foster open, transparent, competitive, and financially sound markets in U.S. futures, option on futures, and U.S. swaps markets. In this role, the papers are written, in 6 Commodities ETFs To Buy. These commodities ETFs can help investors get involved in a useful asset class As an asset class, commodities are frequently overlooked compared to stocks and bonds. Typically, financial advisors and planners will recommend that investors allocate between 5% and 10% of their portfolios to commodities.