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Does Insider Trading Really Move Stock Prices?

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  • Chakravarty, Sugato
  • McConnell, John J.

Abstract

Prior studies have reported a positive correlation between insider trading and stock price changes. The implication of these studies is that insider (i.e., informed) trades have a differential impact on price discovery than non-insider (i.e., uninformed) trades. Based on these results, various scholars have argued for the legalization of insider trading to facilitate rapid price discovery. We analyze the trading activity of a confessed inside trader, Ivan Boesky, in Carnation’s stock just prior to the acquisition of Carnation by Nestle, and find that our tests are unable to distinguish the price effect of Boesky’s (i.e., informed) purchases of Carnation’s stock from the effect of non-insider (i.e., uninformed) purchases. Our conclusion survives extensive robustness tests and has methodological and public policy implications.

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Bibliographic Info

Paper provided by Purdue University, Department of Economics in its series Purdue University Economics Working Papers with number 1114.

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Length: 33 pages
Date of creation: Jun 1998
Date of revision:
Handle: RePEc:pur:prukra:1114

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Cited by:
  1. Sugato Chakravarty, 2002. "Stealth-Trading: Which Traders' Trades Move Stock Prices?," Finance 0201003, EconWPA.
  2. Del Brio, Esther B. & Miguel, Alberto & Perote, Javier, 2002. "An investigation of insider trading profits in the Spanish stock market," The Quarterly Review of Economics and Finance, Elsevier, vol. 42(1), pages 73-94.
  3. Olivier Brandouy & Pascal Barneto & Lawrence Leger, 2003. "Asymmetric information, imitative behaviour and communication: price formation in an experimental asset market," European Journal of Finance, Taylor and Francis Journals, vol. 9(5), pages 393-419.
  4. Esther Brio & Javier Perote, 2007. "What Enhances Insider Trading Profitability?," Atlantic Economic Journal, International Atlantic Economic Society, vol. 35(2), pages 173-188, June.
  5. Liu, Jun & Peleg, Ehud & Subrahmanyam, Avanidhar, 2004. "The Value of Private Information," University of California at Los Angeles, Anderson Graduate School of Management qt71t9z3w3, Anderson Graduate School of Management, UCLA.
  6. Arnold, Tom & Erwin, Gayle & Nail, Lance & Nixon, Terry, 2006. "Do option markets substitute for stock markets? Evidence from trading on anticipated tender offer announcements," International Review of Financial Analysis, Elsevier, vol. 15(3), pages 247-255.
  7. A. Inci & H. Seyhun, 2012. "How do quotes and prices evolve around isolated informed trades?," Journal of Economics and Finance, Springer, vol. 36(2), pages 499-519, April.
  8. Robinson, W.T. & Min, S., 1998. "Is the First to Market the First to fail?: Empirical Evidence for Manufacturing Business," Purdue University Economics Working Papers 1115, Purdue University, Department of Economics.
  9. Leslie A. Jeng & Andrew Metrick & Richard Zeckhauser, . "Estimating the Returns to Insider Trading," Rodney L. White Center for Financial Research Working Papers 19-99, Wharton School Rodney L. White Center for Financial Research.
  10. Fishe, Raymond P. H. & Robe, Michel A., 2004. "The impact of illegal insider trading in dealer and specialist markets: evidence from a natural experiment," Journal of Financial Economics, Elsevier, vol. 71(3), pages 461-488, March.
  11. Nadia Linciano, 2003. "The Effectiveness of Insider Trading Regulation in Italy. Evidence from Stock-Price Run-Ups Around Announcements of Corporate Control Transactions," European Journal of Law and Economics, Springer, vol. 16(2), pages 199-218, September.
  12. Marcus Clements & Harminder Singh & Antonie Van Eekelen, 2007. "Trading in Target Stocks Before Takeover Announcements: An Analysis of Stock and Option Markets," Accounting, Finance, Financial Planning and Insurance Series 2007_20, Deakin University, Faculty of Business and Law, School of Accounting, Economics and Finance.

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