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Understanding Smart Beta: beyond diversification and low risk investing

This topic will be discussed during the Amundi World Investment Forum

Forum AMUNDI.com



The essential

Smart Beta Strategies

  • The minimum variance portfolio
  • The portfolio maximizing the diversification ratio
  • The risk parity portfolio

Low Risk Anomaly and Diversification

  • The Low Risk Anomaly
  • Diversification

Smart Beta in asset allocation

  • Performance drivers
  • Smart Beta for active or absolute returns, a new equity core?
  • Bond-Equity Allocation
  • Diversifying and timing smart beta strategies

Are smart beta passive or active strategies?



Smart Beta is the answer of asset management industry to some well know drawbacks of market capitalization-based equity indices as price noise, overrepresentation of large caps, absence of auto-corrective mean reversion mechanism. Some of these features may result in high volatility and massive drawdowns, thus potentially compromising the risk return payoff of traditional equities, at least when the investment horizon is shorter than 8-10 years.

In this study we provide a formal description of three popular risk-based smart beta strategies (the minimum variance portfolio, the portfolio maximizing the diversification ratio, and the risk parity portfolio), providing some insights in terms of composition. Specifically we point out that all of them provide some interesting diversification enhancement relative to standard indices, and all of them contain low systematic risk characteristics. But still they exhibit different features that can be exploited in a diversified alternative beta allocation, as well as in some timing or rotation strategy.

We show that “low market beta” and the “low risk anomaly” explain a relevant portion of the variability of the active returns of the minimum variance strategies, with some variance explained by “sector reversal” and “dividend yield”. Yet the unexplained variability corresponds to some non-negligible positive contribution to performance, while filtering the universe for some quality criteria provides additional value. As for the diversification-based strategies, “low market beta” and “low risk anomaly” are still the more significant factors, with the addition of “small cap” and “sector reversal”. “Small cap” and “sector reversal” are the most relevant factors for risk parity strategies, while “low beta” and “low risk anomaly” are less explanatory.

If the investor’s relevant risk measure is absolute risk, smart beta may become a “new equity core”. In this case, however, liquidity of smart beta strategies must be consistent with the amount of assets the investor holds.

We finally discuss whether these strategies should be considered as passive or rather active strategies.

Alessandro RUSSO, CFA, Head of Equity Quant Research at Amundi

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