套利行为和收益 Arbitrage Action and Returns 预期收益 E Ret a D 标准方差 St. Dev 卖空3份D股票和A,B,C股票各买1份形成组合P Short 3 shares ofd and buy l ofA, b &c to form P. 投资者将获取比卖空更高额的回报 You earn a higher rate on the investment than you pay on the short sale 12-612-6 套利行为和收益 Arbitrage Action and Returns 预期收益 E. Ret. 标准方差 St.Dev. * P * D 卖空3份D股票和A,B,C股票各买1份形成组合P Short 3 shares of D and buy 1 of A, B & C to form P. 投资者将获取比卖空更高额的回报 You earn a higher rate on the investment than you pay on the short sale