Portfolio Selection: Efficient Diversification of Investments, 1959
这篇论文回顾了马科维茨1959年著作对金融经济学的贡献，指出它改变了投资世界，让投资者从关注单个股票转向整体投资组合，并提出了一个假设性问题：如果每个人都按马科维茨的建议行事会怎样？
In Bill Sharpe’s remarks at Harry Markowitz’s Celebration of Life, he reflected on Markowitz’s contributions to the field of financial economics. He identified <xref>Markowitz’s 1959</xref> book <italic>Portfolio Selection: Efficient Diversification of Investments</italic> as one that changed the investment world and helped start the academic field of financial economics; he credited it for investors thinking in terms of portfolios, rather than focusing on individual stocks and bonds. Sharpe then asked the question, “What if everyone were doing what Harry had said they should do?”