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Factor tilt strategies have generally produced less alpha in live portfolios compared to theoretical factor long–short paper portfolios and have largely been unsuccessful in replicating smart beta strategies. End-investors, consequently, often reap a much smaller return from factor exposure than they expect. The winning approach to factor investing is buying the losers: Past negative performance appears to be predictive of positive future returns.
Factor investing has failed to live up to its many promises. Its success is compromised by three problems that are often underappreciated by investors. Published in the Journal of Portfolio Management and also available on SSRN.
Momentum is one of the most compelling factors in theoretical long–short paper portfolios, but live results of momentum strategies fall short of theoretical returns. Thoughtful implementation, a careful sell discipline, and an avoidance of stocks with stale momentum can narrow the gap between paper and live results.
Our analysis of three first-generation smart beta strategies shows factor-replicated portfolios are ineffective substitutes for their smart beta counterparts, exhibiting poorer performance, high turnover, and low capacity.
(VIDEO) Why Factor Tilts Are Not Smart “Smart Beta”
We challenge the common view that “smart beta” strategies and factor tilts are the same. In fact, factor-replicated portfolios are poor substitutes for their smart beta counterparts. Performance is poor, turnover is high, and capacity is terrible. Why? Implementation details matter—both for performance and for trading costs.
Managers who favor high factor loadings on market beta, value, or momentum generally do not derive nearly as much incremental return as theoretical factor return histories would suggest, and the culprit appears to be the real-world costs of implementation.
(VIDEO) Alice in Factorland and the Incredible Shrinking Factor Return
Research by Rob Arnott, Vitali Kalesnik, and Lillian Wu shows that factor-tilt strategies suffer from substantial return slippage (vs. factor long–short paper portfolios) due to the real-world costs of implementation.
