Nieuwerburgh, Stijn Van; Veldkamp, Laura - In: Journal of the European Economic Association 4 (2006) 2-3, pp. 623-633
U.S. investors allocate 30-40% of their financial asset portfolio in the stock of the company they work for. Such a portfolio flies in the face of standard portfolio theory, which prescribes that an investor should hold less of a financial asset that is positively correlated with her...