There are many styles, models, and factors that go into the management of an equity portfolio. The traditional manager"s focus on stock picking and the resulting ad hoc nature of portfolio construction can lead to poorly defined portfolios. Thus the options between active, passive and engineered management come into play, with the ultimate objective being to establish an investment structure that will provide a return over time that compensates for the risk incurred. Это и многое другое вы найдете в книге Selected Topics in Equity Portfolio Management (Frank J. Fabozzi, Frank J. Fabozzi)