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I read a paper today that I thought was pretty interesting - A Consultant’s Perspective on Distinguishing Alpha from Noise. [8 pages PDF] I have been on both sides of the table in my life. I have hired managers, and I have tried to sell my equity management services.

In general, managers who thought it would offer value would venture off the beaten path. They might own some well-known names, but they would own far more that would make me say, “Who is that?” The companies would be less known because they are smaller, foreign, have a control investor, etc.

Those portfolios would look a lot different than an index fund. They would be more concentrated by sector, industry and company. They would have a process that analyzes what the market is mis-valuing, whether by sector, industry, or company. They would stick to their discipline through thick and thin, realizing that all anomalies in the market go in and out of favor.

The process would specify what anomalies of the market, or what information advantages the fund would attempt to exploit. But once you specify that, you stick to that as your strategy. There is no room for tossing an asset in “because it looks good.”

There is a balance in good strategies that allows for minor modifications around core principles. All good strategies have to adapt, but there has to be a strategic core from which the strategy will never vary. Absent that core, the strategy will give in to fear and greed - buying high and selling low.

Quoting from the paper:

I am amazed at all the managers that make an assertion of the type “In the long run X always wins”, where X could be dividend yield, earnings growth, quality of management, a quantitative factor or mix of factors, etc., yet are unable cite a reason why X should be systematically under-priced by the market.

My view is twofold. There are some ugly situations involving financial stress that most investors don’t want to take on. There are also less glamorous companies that few want to buy. Those can be excellent investments. My second point is tougher to make, but industries go in and out of favor. So do market factors. Buy that which is safe, and out-of-favor.

Now, for managers, I would recommend keeping a trading journal, where you record why you think your investment hypothesis will succeed. If your investments succeed for reasons that you specified in advance, that is an indication of skill. There is a lot of what is called “luck” in investing. If you are beating the market, and it is not for reasons that you specified in advance, you do not have skill, you have luck, and luck strongly tends to mean revert.

My view comes down to this: I like to see a long track record of outperformance, an unusual portfolio, and a strategy that convinces me that you have discipline, and a constructive way of finding undervalued assets. Absent that, I will probably think that you are a pretender more than an outperformer. There are always some who outperform for a short time, and then underperform as the underlying economics shift. Markets are volatile enough that there are always some with three-year track records that are stunning, and very lucky.

Separating luck from skill - that is the toughest aspect of investing. But it is needed because there are so many investment managers touting skill, and what do they really offer?

Source: Distinguishing Alpha From Noise