
CHICAGO(Reuters)-ForEugeneFama,theUniversityofChicagoprofessorandfatherofmodernfinance,thekeytoinvestingisrelativelysimple-stayinalow-cost,diversifiedportfoliotocapturevirtuallyallmarketreturnswithamixthat'srightfortheamountofriskyoucanstomach.Yetfewpeoplereallybelievethatwillwork-theydon'tlikestayingstill-sotheychaseactivemanagersorpickstocksthemselves,usuallybuyingandsellingatthewr...