Capacity of Smart Beta Strategies: A Transaction Cost Perspective
Posted: 31 Oct 2016 Last revised: 4 Oct 2019
Date Written: January 27, 2017
Using a transaction cost model, and an assumption for the smart beta premium observed in data, we estimate the capacity of a particular implementation of momentum, quality, value, size, minimum volatility, and a multi-factor combination. For a given trading horizon, we can find the fund size where the transaction costs from flows into these strategies negate the smart beta premium. For a one-day trading horizon, momentum is the strategy with the smallest assets under management (AUM) capacity of $65 billion, and size is the largest with an AUM capacity of $5 trillion. At five days, momentum and size capacity rise to $320 billion and over $10 trillion, respectively.
Keywords: Capacity, smart beta, factor risk premium, transaction cost
JEL Classification: G11, G12
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