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Alpha, Beta and Bicycles Alpha/Beta Separation and the Efficient Asset Manager |
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By
Michael S. Dalis, Senior Managing Director, U.S. Sub-Advisory
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Bicycle races, such as the Tour de France, amaze some and confuse others. Most will appreciate the strength, ferocity, endurance and desire to win in the peloton (the colorful pack of race competitors), but what's this about competitors helping one another during a race? By taking turns leading and drafting in the slipstream behind other riders, a competitor can preserve up to 40% of his or her energy. Gaining and keeping this advantage, and knowing, based on the rider's strengths, when to make his or her move, is typically the difference between finishing and winning. The solo rider – determined, head down and working hard – is at a severe disadvantage. Asset managers are in a competition which demands many of the same qualities to win. As in cycling, some will insist on or be left riding solo. Others will seek collaborations at different stages of the race – preserving resources by drafting off the skills of others – and will choose when and with what tool to make their move in pursuit of victory. To date, the collaborations of asset managers have mostly been geared toward boosting distribution or filling narrow gaps in a fund lineup. This essay introduces the concept of alpha/beta separation, and argues that more fundamental but less obvious forms of collaboration are available to the asset manager seeking more robust alpha production and greater efficiency. Alpha/Beta Separation
Implications for the Asset Manager
The alpha-beta manager question will be the simplest for most to answer. Most investment managers consider themselves active managers, so we will assume that most managers will identify themselves as alpha managers. If the alpha manager's “edge” is defined as sustainable alpha production, performance can be attributed though any number of methods or software packages (i.e., Barra, etc.). The source of this performance may be some combination of exceptional talent, access, research, information sources and trading. It also may be limited to certain asset classes and even sectors or sub-sectors. Wherever the manager lacks an edge, there are three choices: 1) the manager can continue to offer weak product and risk sustained redemptions and reputational risk, 2) where permitted, the manager can port its proven alpha source onto beta where its alpha ability is absent (portable alpha), or 3) it can buy it from others (sub-advisory). In honestly defining its edge, the alpha manager may find that it can leverage its best alpha sources in other ways, including opening up new and higher margin revenue streams with concentrated, alpha-extension (i.e., 130% long, 30% short) and even absolute return versions of the original strategy. Resources should be focused on protecting and developing the firm's “edge.” This might include strengthening support given to portfolio and analyst teams distracted by portfolio construction, trading and projects. Regarding resources focused in areas outside of the firm's edge, consider the following:
In the first case, those firms that aspire to fill all the style boxes, but only realistically generate alpha in some of them may elect to hire sub-advisors to repair struggling products and improve efficiency. In the example above, the manager with a robust alpha capability in growth equities could seek and retain a value specialist to sub-advise its value product line – helping the firm retain at-risk assets, improve performance and potentially build assets in these funds. The sub-advisory fees would be rationalized based on direct costs that can be eliminated and revenue that can be generated from asset retention and growth. In the second case, those firms seeking maximum alpha production and efficiency will be intrigued by the proposal that their beta production can be outsourced. Hiring a beta sub-advisor may be valuable in several areas, including the following:
Choosing to buy alpha and/or beta in certain places is less an admission of weakness and more an acknowledgment of what is core and what is secondary to a manager's pursuit of victory, as defined by sustainable alpha production and efficiency. The decision to buy versus build may be temporary. Buying may simply be the quickest, easiest and least expensive way to gain an advantage at different points in the race. New alpha sources and beta production resources can always be developed and used later. SSgA's sub-advisory unit was established to build working partnerships with other asset managers, enabling them to tap into the firm's alpha and beta competencies as needed. Summary 1For a complete discussion on the concept of alpha/beta separation, readers should refer to: Clarke, deSilva and Thorley, “Portfolio Constraints and the Fundamental Law of Active Management,” Financial Analysts Journal, October 2002; and, from ssga.com:, Brandhorst, “The Benefits of Separating Portfolio Management of Alpha and Beta,” March 2005, Calvello, “Best Practices for Portable Alpha,” April 2005, and Kohler, “Implementation Guide for Portable Alpha and Efficient Beta Exposure,” December 2004. This material is for your private information. The views expressed are the views of Michael Dalis only through the period ended August 23, 2006 and are subject to change based on market and other conditions. The opinions expressed may differ from those with different investment philosophies. The information we provide does not constitute investment advice and it should not be relied on as such. It should not be considered a solicitation to buy or an offer to sell a security. It does not take into account any investor's particular investment objectives, strategies, tax status or investment horizon. We encourage you to consult your tax or financial advisor. All material has been obtained from sources believed to be reliable, but its accuracy is not guaranteed. There is no representation nor warranty as to the current accuracy of, nor liability for, decisions based on such information. Past performance is no guarantee of future results. Posted On: August 24, 2006 |
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