
The average year-end size premium is signicant only when the beginning-of-year aggregate (median) book-to-market is high (top 10% to 20% in historical terms). This helps to explain why empirical research based on dierent time periods nds conicting results regarding the existence of the size premium. This transitional dynamics also suggests that market frictions may explain the size premium. The eect is pervasive and it is present in dierent periods in the United States, and in the United Kingdom; considering the Fama/French SMB factor or the individual size portfolios; and controlling for market risk.
Investment Decisions, Event Studies, Information and Market Efficiency, Bond Interest Rates, G14, Trading volume, Asset Pricing, Asset Pricing; Trading volume; Bond Interest Rates, Size premium; discount rates; market frictions; aggregate book-to-market, Economie, G11, G12, Information and Market Efficiency; Event Studies, Portfolio Choice, Portfolio Choice; Investment Decisions, jel: jel:G12, jel: jel:G11, jel: jel:G14
Investment Decisions, Event Studies, Information and Market Efficiency, Bond Interest Rates, G14, Trading volume, Asset Pricing, Asset Pricing; Trading volume; Bond Interest Rates, Size premium; discount rates; market frictions; aggregate book-to-market, Economie, G11, G12, Information and Market Efficiency; Event Studies, Portfolio Choice, Portfolio Choice; Investment Decisions, jel: jel:G12, jel: jel:G11, jel: jel:G14
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