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Riding the 1/N Premium

This article proposes a simple and effective rotation strategy. The strategy rotates between the value-weighted market portfolio (VW) and the equal-weighted counterpart (EW) based on an implicit market signal—the lagged one-month market return. The authors report a statistically significant relation between the lagged one-month market return and the future 1/N premium, which is the return difference between the EW and VW portfolios. Building on the predictive quality and exploiting the time-varying nature of the 1/N premium, they introduce a transparent and robust investment strategy that yields superior absolute and risk-adjusted returns.