Allocation Betas
提出分配阿尔法和贝塔的概念，以美国股票为贝塔来源，将资产分为摇摆资产和阿尔法核心，简化资产配置的决策过程，并发现有效前沿上的“甜点”区域。
The complexities of standard optimization can obscure the intuitive decision process that should play a major role in asset allocation. The use of allocation alphas and betas—with U.S. equity as the beta source—facilitates an intuitive approach and greatly simplifies the decision process. A portfolio's assets are separated into two groups: “Swing assets” are the traditional liquid asset classes, such as U.S. bonds and equity; the “alpha core” is all other assets, which are subject to more stringent limits. After the nontraditional assets are combined to form an alpha core, the result is a three-part efficient frontier: (1) a cash-to-core segment, (2) a fixed-core segment, and (3) an equity extension. The boundaries lead to a “sweet spot” on the efficient frontier where most U.S. institutional portfolios are clustered.