Trading Costs and Informational Efficiency /
We study the effect of trading costs on information aggregation and acquisition in financial markets. For a given precision of investors' private information, an irrelevance result emerges when investors are ex-ante identical: price informativeness is independent of the level of trading costs....
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- Format:
- Elektronisch E-Book
- Sprache:
- Englisch
- Veröffentlicht:
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Cambridge, Mass.
National Bureau of Economic Research
2019.
- Zusammenfassung:
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We study the effect of trading costs on information aggregation and acquisition in financial markets. For a given precision of investors' private information, an irrelevance result emerges when investors are ex-ante identical: price informativeness is independent of the level of trading costs. When investors are ex-ante heterogeneous, anything goes, and a change in trading costs can increase or decrease price informativeness, depending on the source of heterogeneity. Our results are valid under quadratic, linear, and fixed costs. Through a reduction in information acquisition, trading costs reduce price informativeness. We discuss how our results inform the policy debate on financial transaction taxes/Tobin taxes.
- Umfang:
- 1 online resource: illustrations (black and white);
- Anmerkungen:
- March 2019.
- Schlagworte: