Risk and Lack of Diversification under Employee Ownership and Shared Capitalism

Joseph R. Blasi, Douglas L. Kruse, and Harry M. Markowitz, Shared Capitalism at Work: Employee Ownership, Profit and Gain Sharing, and Broad-based Stock Options (University of Chicago Press, 2010), chap. 3, https://www.nber.org/books-and-chapters/shared-capitalism-work-employee-ownership-profit-and-gain-sharing-and-broad-based-stock-options/risk-and-lack-diversification-under-employee-ownership-and-shared-capitalism.