What I have graphically mapped out below is probably a useful and efficient investment tool, especially for investors who are interested in diversification across industries. Diversification mixes a wide variety of investments within a portfolio. A well-diversified portfolio consists a mix of distinct asset types, investment vehicles and even across industries to limit exposure to any single asset or risk. In 1999, MSCI and S&P Dow Jones Indices developed the Global Industry Classification Standard (GICS) to capture the breadth, depth and evolution of industry sectors. GICS is a four-tiered, hierarchical industry classification system. Companies are classified quantitatively and qualitatively and assigned a single GICS classification at the Sub-Industry level according to its principal business activity. Revenues and market perception are key factors in determining a firm’s principal business activity. ...