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The Impact of Changes in the FTSE 100 Index

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Author Info
Bryan Mase ()
Abstract

This paper examines both the long-term and short-term impact associated with changes in the constituents of the FTSE 100 Index. We find that stocks exhibit positive (negative) abnormal long-run performance following their inclusion in (deletion from) the index. There is also evidence of significant short-term cumulative abnormal returns around the event. The reversal of these price effects suggests that short-term buying (selling) pressure (possibly from index trackers) moves prices temporarily away from equilibrium. An analysis of stock liquidity implies speculators may trade in advance of the announcement, while index trackers trade between the announcement and event dates. Finally, the organisation of the FTSE 100 Index enables us to conduct an analysis of stocks that just avoid being relegated from (fail to be promoted to) the FTSE 100.

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Paper provided by Economics and Finance Section, School of Social Sciences, Brunel University in its series Public Policy Discussion Papers with number 02-25.

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Length: 37 pages
Date of creation: Jul 2002
Date of revision:
Handle: RePEc:bru:bruppp:02-25

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Postal: Brunel University, Uxbridge, Middlesex UB8 3PH, UK

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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:

  1. K. Geert Rouwenhorst, 1998. "International Momentum Strategies," Journal of Finance, American Finance Association, vol. 53(1), pages 267-284, 02. [Downloadable!] (restricted)
    Other versions:
  2. John D. Lyon & Brad M. Barber & Chih-Ling Tsai, 1999. "Improved Methods for Tests of Long-Run Abnormal Stock Returns," Journal of Finance, American Finance Association, vol. 54(1), pages 165-201, 02. [Downloadable!] (restricted)
  3. Kothari, S. P. & Warner, Jerold B., 1997. "Measuring long-horizon security price performance," Journal of Financial Economics, Elsevier, vol. 43(3), pages 301-339, March. [Downloadable!] (restricted)
  4. Beneish, Messod D. & Gardner, John C., 1995. "Information Costs and Liquidity Effects from Changes in the Dow Jones Industrial Average List," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 30(01), pages 135-157, March. [Downloadable!]
  5. Desai, Hemang & Jain, Prem C., 1999. "Firm performance and focus: long-run stock market performance following spinoffs," Journal of Financial Economics, Elsevier, vol. 54(1), pages 75-101, October. [Downloadable!] (restricted)
  6. Pruitt, Stephen W & Wei, K C John, 1989. " Institutional Ownership and Changes in the S&P 500," Journal of Finance, American Finance Association, vol. 44(2), pages 509-13, June. [Downloadable!] (restricted)
  7. Harris, Lawrence E & Gurel, Eitan, 1986. " Price and Volume Effects Associated with Changes in the S&P 500 List: New Evidence for the Existence of Price Pressures," Journal of Finance, American Finance Association, vol. 41(4), pages 815-29, September. [Downloadable!] (restricted)
  8. Thompson, Rex, 1985. "Conditioning the Return-Generating Process on Firm-Specific Events: A Discussion of Event Study Methods," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 20(02), pages 151-168, June. [Downloadable!]
  9. Malatesta, Paul H., 1986. "Measuring Abnormal Performance: The Event Parameter Approach Using Joint Generalized Least Squares," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 21(01), pages 27-38, March. [Downloadable!]
  10. Amihud, Yakov & Mendelson, Haim, 1986. "Asset pricing and the bid-ask spread," Journal of Financial Economics, Elsevier, vol. 17(2), pages 223-249, December. [Downloadable!] (restricted)
  11. Scholes, Myron S, 1972. "The Market for Securities: Substitution versus Price Pressure and the Effects of Information on Share Prices," Journal of Business, University of Chicago Press, vol. 45(2), pages 179-211, April. [Downloadable!] (restricted)
  12. Jegadeesh, Narasimhan & Titman, Sheridan, 1993. " Returns to Buying Winners and Selling Losers: Implications for Stock Market Efficiency," Journal of Finance, American Finance Association, vol. 48(1), pages 65-91, March. [Downloadable!] (restricted)
  13. Aditya Kaul & Vikas Mehrotra & Randall Morck, 2000. "Demand Curves for Stocks "Do "Slope Down: New Evidence from an Index Weights Adjustment," Journal of Finance, American Finance Association, vol. 55(2), pages 893-912, 04. [Downloadable!] (restricted)
    Other versions:
  14. Barber, Brad M. & Lyon, John D., 1997. "Detecting long-run abnormal stock returns: The empirical power and specification of test statistics," Journal of Financial Economics, Elsevier, vol. 43(3), pages 341-372, March. [Downloadable!] (restricted)
  15. Berkman, Henk & Eleswarapu, Venkat R., 1998. "Short-term traders and liquidity: a test using Bombay Stock Exchange data," Journal of Financial Economics, Elsevier, vol. 47(3), pages 339-355, March. [Downloadable!] (restricted)
  16. Shleifer, Andrei, 1986. " Do Demand Curves for Stocks Slope Down?," Journal of Finance, American Finance Association, vol. 41(3), pages 579-90, July. [Downloadable!] (restricted)
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  1. Sascha Wilkens & Jens Wimschulte, 2005. "Price and Volume Effects Associated with 2003’s Major Reorganization of German Stock Indices," Financial Markets and Portfolio Management, Springer, vol. 19(1), pages 61-98, June. [Downloadable!] (restricted)
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