Interesting that according to today's Sunday Times energy and mining companies now account for 34% of the FTSE 100. Breaking this down further shows that oil and gas represents 19.9% and materials 14.6% with Shell at 6.3%, BP at 6.0%, BG Group at 3.2%, Rio Tinto at 4.2% and BHP Billiton at 3.5%. The exposure to commodities in the FTSE 100 will increase even more when Glencore lists.
Looking at the U.S. Dow Jones Industrials index energy accounts for 6.7% and 6.3% is materials. Looking at the larger and broader U.S. S&P 500, energy stocks make up 11.7% of the index by value and materials are 3.2%.