A short discussion I had with Sam Lee over at Morningstar.
Sam Lee: Hi, I’m Sam Lee, ETF strategist with Morningstar, here at theMorningstar ETF Conference 2014.
Joining me today is Wes Gray, a Drexel University professor and founder of Alpha Architect, a quantitative investment firm.
Wes, thanks for being here.
Wes Gray: Sam, thanks for inviting me.
Lee: Wes, your firm is, and you yourself are, a strong proponent of quantitative, systematic investing strategies. Could you explain what that means and why this is your preferred approach?
Gray: Unlike typical quantitative managers, where you think about black box, mathematical witchcraft, we’re a little bit different. We’re basically fundamental investors who use quantitative tools to minimize our behavioral bias. If you ever dive into the stacks of academic research from psychology that actually examines the performance of simple, rules-based models relative to overpaid experts, the evidence is very clear that simple, rules-based models beat experts about 90% of the time.
We are humbled by that evidence, and we’ve chosen to implement it as part of our investment process.
Lee: Could you describe a strategy that you’ve used? You call it the Quantitative Value Strategy, I believe.
Gray: The strategy, the book’s title, Quantitative Value, is exactly this sort of idea. We take the book Security Analysis and Ben Graham’s great ideas about the value investment philosophy– we love all that stuff. We’ve used a computer to basically automate a lot of the lessons learned from that literature. Instead of having a human analyst do all that work, we have our computer do it, because we like the idea of being rules-based and systematic.
We don’t ever call up a CEO, and he tells us, “Yeah, my firm is amazing; we’re going to knock the cover off earnings.” But he is suffering from overconfidence, and we’re now insider-trading, doing illegal stuff. We don’t want to be in that business at all; we don’t like it. We think it’s dirty, and we just don’t think it works.
We’re fundamental guys using systematic tools to get the job done.
Lee: From your book, it seems like your strategy is very concentrated. It’s very different from other systematic trading strategies. Could you explain that?
Gray: The basic process intuitively is pretty simple. Initially we use forensic accounting tools to identify manipulators, frauds, or potentially bankrupt firms, and there is a lot of academic literature about how to do this. That’s stage one–pull out firms that are potentially just bad companies.
Stage two is get to the cheap stuff as quickly as possible. You want to be in the margin of safety garbage bin because that’s where you’re most likely to find things that are just cheap for probably a bad reason. Once we’ve identified these cheap firms, we then use good old-fashioned financial statement analysis to separate them into winners–or what we think are winners–and losers, by just looking at a variety of quality metrics.
And then the final stage–which actually isn’t in the book, but we’ve been doing a lot of research on since the book came out a few years ago–is this concept of sentiment. We want to buy cheap, high-quality firms that Wall Street hates. The irony is that cheap high-quality firms as a whole are really good, but if you can get bad sentiment from Wall Street, that’s even better, because now you are like that the uber-contrarian of the contrarians.
And then we have chosen to be very concentrated, because we don’t like this idea that … you have a system that you spend years of research on, you really believe in it, and sure it has a lot of tracking error, and sure it’s going to underperform over probably long stretches of time, but if you want to bet on an edge, you don’t bet on an edge by “diworsifying” it across 500 stocks. As Charlie Munger says, this idea of excess diversification is complete madness. If you have an edge, bet it with high conviction, don’t “diworsify” it because you’re afraid of tracking error. We’re not afraid of tracking error.
https://alphaarchitect.com/blog/2014/09/16/white-paper-stick-facts/
About the Author: Wesley Gray, PhD
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