From WisdomTree: On a special edition of our “Behind the Markets” podcast, co-hosted by Wesley Gray, we spoke with Rich Wiggins and Andy Weisman. Wiggins works in the Middle East with one of the largest pools of investment capital in the region, and Weisman is the co-CIO of the Liquid Alternatives Group at Windham Capital, out of Boston.
Our conversation touched on how these gentlemen look at using factors in a portfolio setting and how they consider and manage liquid alternative strategies. We also talked about our two guests’ storied pasts.
Speaking of stories, we led off with one that deals with Bernie Madoff. Weisman asked our group if we had read the book No One Would Listen, written by Harry Markopolos with David Fisher. Markopolos exposed Madoff’s fraud. About seven years before anyone would listen (hence the book’s title), Markopolos contacted someone to reverse engineer Madoff’s track record. This gentleman thought he could, given that he was an expert in portfolio attribution and such reverse-engineering projects. He spent a week trying to do this, but he could not at all figure out what was going on. It dawned on him that Madoff’s returns were too good to be true. The person doing the reverse engineering was Andy Weisman–and he came to the conclusion seven years before anyone else. Weisman clearly caught our attention early in the podcast.
History of Alpha: We talked a lot about factors. Weisman described alpha as the intercept term in a regression equation that is found from setting the expected value of the error term to zero. Factor models started off as just beta with anything not explained by market exposure as alpha. Then came the Fama-French three-factor model that shrank alphas more, and we continue to expand factors going into regressions so that alpha increasingly is being narrowed down. At a high level, often what we think of as alpha is just a misspecification of a factor model, and we have yet to appropriately describe what is driving that portfolio’s returns.
How Concentrated Should Your Factor Bets Be? Wiggins worries about combining the so-called smart betafactors into a portfolio mix. Wiggins is concerned that too much is canceled out when factors are combined. Things that are the opposite of each other, like value and momentum–value stocks are identified by a low price/book ratio, and with prices going down (poor momentum) you have value stocks–cancel each other out when combined. Regarding value and quality, many value stocks look “junky” and the opposite of “quality.” Wiggins worries that if you try to combine all these factors together, you end up with a product that looks like the market and broad market beta again. Wiggins pointed to “smart beta” combination portfolios that have tiny factor loadings with offsetting contra bets. Wiggins seemed more approving of going big and taking concentrated factor bets–as long as your goal is just to make money.