All portfolios, whether they are stock or bond portfolios, are compared to benchmarks to gauge their performance; indices or peer group statistics are used to monitor the success of each fund.
As composites, the indices can be thought of as similar to polls: a polling firm that seeks to understand what a certain population thinks about a certain issue will ask representatives of that cross-section of the population. Similarly, a stock or bond benchmark that seeks to measure a certain portion of the market will simply compile the values of representative stocks or bonds.
Portfolio construction refers to the manner in which securities are selected and then weighted in the overall mix of the portfolio with respect to these indices.… Read the rest