Many mutual funds, especially exchange-traded funds (“ETFs”), are managed to track a specific market index. An attraction of such funds for investors is the opportunity of a “one-stop-shop” investment, especially for exposure to broad markets. In addition, such funds often come with low expenses. Proper investor due diligence warrants taking a closer look at the index being tracked to understand the range of exposures within the index to various sectors. An index may have exposure to a sector that is incompatible with an investor’s individual preferences. A review of some tracking indexes can provide perspective for portfolio construction ahead.