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Insider Trading, Investment and Liquidity: A Welfare Analysis

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Author Info
Giovanna Nicodano
Sudipto Bhattacharya

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Abstract

We compare competitive equilibrium outcomes with and without trading by a privately informed ¶monopolistic¶ insider, in a model with real investment portfolio choices ex ante, and noise trading generated by aggregate uncertainty regarding other agents intertemporal consumption preferences. The welfare implications of insider trading for the ex ante expected utilities of outsiders are analysed. The role of interim information revelation due to insider trading, in improving the risk-sharing among outsiders with stochastic liquidity needs, is examined in detail.

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Publisher Info
Paper provided by Financial Markets Group in its series FMG Discussion Papers with number dp334.

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Date of creation: Aug 1999
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Handle: RePEc:fmg:fmgdps:dp334

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  1. Alexander Gümbel & Oren Sussman, 2001. "Optimal exchange-rates: a market-microstructure approach," OFRC Working Papers Series 2001fe13, Oxford Financial Research Centre. [Downloadable!]
  2. Giovanni Cespa, 2007. "Information Sales and Insider Trading with Long-lived Information," CSEF Working Papers 174, Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy. [Downloadable!]
  3. Arnoud W.A. Boot & Radhakrishnan Gopaian & Anjan V. Thakor, 2006. "Market Liquidity, Investor Participation and Managerial Autonomy: Why do Firms go Private?," Tinbergen Institute Discussion Papers 06-011/2, Tinbergen Institute. [Downloadable!]
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  4. Andrea Buffa & Giovanna Nicodano, 2006. "Should Insider Trading be Prohibited when Share Repurchases are Allowed?," Carlo Alberto Notebooks 16, Collegio Carlo Alberto. [Downloadable!]
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  5. Chi-Wen Lee & Zemin Lu, 2008. "Trading on inside information when there may be tippees," Review of Quantitative Finance and Accounting, Springer, vol. 31(3), pages 241-260, October. [Downloadable!] (restricted)
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