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investors behaved more as in the momentum strategy; and after Black Monday more as in the contrarian strategy. We argue that …
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We study the link between the profitability of momentum strategies and firm size, drawing on an extensive dataset … covering 14 stock markets across the globe. International momentum profitability is markedly higher in medium-size than in big … stocks. Momentum premia are considerably diminished by trading costs, when taking into account the actual portfolio turnover …
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We show that in recent years global factor models have been catching up significantly with their local counterparts in terms of explanatory power (R2) for international stock returns. This catch-up is driven by a rise in global factor betas, not a rise in factor volatilities, suggesting that the...
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