| Investing in an index is usually a good way to hedge your bets. In commodities, though, it is hard to get around one thing: energy. The oil market is enormous: Even after the recent slump in prices—and Thursday’s rally fizzled quickly–the notional value of annual oil consumption is around $2 trillion.
That is reflected in the make-up of the Bloomberg Commodity Index, of which oil and refined products such as gasoline constitute 17.2%. Throw in natural gas and the overall energy component rises to 27.2%. In another popular index, the S&P GSCI, oil alone weighs in at 67.2%...............................................Full Article: Source
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