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Informational efficiency: ranking markets

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  • Frederic Palomino

Abstract

The paper studies informational properties of three types of imperfectly competitive markets: a one-signal speculative market (OSS market) in which agents have only private information about the fundamental value (v) of the risky asset traded, a two-signal speculative market (TSS market) in which agents have private information about both v and the asset supply, and a market in which agents are endowed with both information about v and shares of the risky asset traded. In this last market (JA market), agents have joint activities: they trade for both speculative and hedging purposes. It is shown that (i) the JA market and the OSS market are the most and the least efficient, respectively, and (ii) the levels of informational efficiency in the three markets are inversely correlated with the intensities with which traders use their private information about the fundamental value of the asset.

Suggested Citation

  • Frederic Palomino, 2001. "Informational efficiency: ranking markets," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 18(3), pages 683-700.
    • Handle: RePEc:spr:joecth:v:18:y:2001:i:3:p:683-700
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    Citations

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    Cited by:

    1. Giovanni Cespa, 2004. "A Comparison of Stock Market Mechanisms," RAND Journal of Economics, The RAND Corporation, vol. 35(4), pages 803-824, Winter.
    2. Ariadna Dumitrescu, 2003. "Imperfect Competition and Market Liquidity with a Supply Informed Trader," UFAE and IAE Working Papers 591.03, Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC).
    3. Chen, John T. & Hoppe, Fred M., 2004. "A connection between successive comparisons and ranking procedures," Statistics & Probability Letters, Elsevier, vol. 67(1), pages 19-25, March.

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