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Ambiguity, Infra-Marginal Investors, and Market Prices

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  • Siddiqi, Hammad

Abstract

It is difficult to explain the price insensitive or infra-marginal behavior, an example of which is the behavior of credit markets during the recent financial crisis, by risk aversion alone. It is known that infra-marginal behavior may arise with ambiguity aversion. Furthermore, there appears to be fairly strong evidence of a close connection between ambiguity and conformity. Here we propose an extension of the standard ambiguity framework to incorporate conformity. We find that there are open sets of state-price ratios over which the entire market is price insensitive or infra-marginal. This result has important implications for market equilibrium and volatility

Suggested Citation

  • Siddiqi, Hammad, 2009. "Ambiguity, Infra-Marginal Investors, and Market Prices," MPRA Paper 13514, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:13514
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    References listed on IDEAS

    as
    1. Epstein, Larry G & Wang, Tan, 1994. "Intertemporal Asset Pricing Under Knightian Uncertainty," Econometrica, Econometric Society, vol. 62(2), pages 283-322, March.
    2. Markus Leippold & Fabio Trojani & Paolo Vanini, 2008. "Learning and Asset Prices Under Ambiguous Information," The Review of Financial Studies, Society for Financial Studies, vol. 21(6), pages 2565-2597, November.
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    More about this item

    Keywords

    Ambiguity; Infra-Marginal Behavior; Arrow Securities;
    All these keywords.

    JEL classification:

    • G0 - Financial Economics - - General
    • G10 - Financial Economics - - General Financial Markets - - - General (includes Measurement and Data)

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