| 1. | Then sharpe , linter , mossion and ross , etc . developed markowitz ' s mean - variance model , leaded to standard investment models like capital asset pricing model ( capm ) , single - index model and arbitrage pricing theory ( apt ) 后经sharpe , litner , mossion和ross等人发扬光大,提出了capm , apt等标准投资模型,完成了资本资产定价的问题。 |