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A Generalized Method for Detecting Abnormal Returns and Changes in Systematic Risk

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Author Info
 Cyree, Ken B
DeGennaro, Ramon P

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Abstract

We generalize traditional event-study techniques to allow for event-induced parameter shifts, shifting variances, and firm-specific event periods. Our method, which nests traditional methods, also permits systematic risk to change gradually during the event period and exit the period at higher or lower levels. We use our approach to study 123 banks that acquired other institutions between 1989 and 1995. We find a significant change in the systematic risk of the acquiring firms, significant ARCH effects, and an event period that ends before the date of the announcement. None of these results is detectable using conventional methods. Copyright 2002 by Kluwer Academic Publishers

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Publisher Info
Article provided by Springer in its journal Review of Quantitative Finance and Accounting.

Volume (Year): 19 (2002)
Issue (Month): 4 (December)
Pages: 399-416
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Handle: RePEc:kap:rqfnac:v:19:y:2002:i:4:p:399-416

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Web page: http://springerlink.metapress.com/link.asp?id=102990

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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. Brown, Stephen J. & Warner, Jerold B., 1985. "Using daily stock returns : The case of event studies," Journal of Financial Economics, Elsevier, vol. 14(1), pages 3-31, March. [Downloadable!] (restricted)
  2. Brown, Stephen J. & Warner, Jerold B., 1980. "Measuring security price performance," Journal of Financial Economics, Elsevier, vol. 8(3), pages 205-258, September. [Downloadable!] (restricted)
  3. Cornett, Marcia Millon & Tehranian, Hassan, 1992. "Changes in corporate performance associated with bank acquisitions," Journal of Financial Economics, Elsevier, vol. 31(2), pages 211-234, April. [Downloadable!] (restricted)
  4. Scholes, Myron & Williams, Joseph, 1977. "Estimating betas from nonsynchronous data," Journal of Financial Economics, Elsevier, vol. 5(3), pages 309-327, December. [Downloadable!] (restricted)
  5. Houston, Joel F & Ryngaert, Michael D, 1997. " Equity Issuance and Adverse Selection: A Direct Test Using Conditional Stock Offers," Journal of Finance, American Finance Association, vol. 52(1), pages 197-219, March. [Downloadable!] (restricted)
  6. Madura, Jeff & Wiant, Kenneth J., 1994. "Long-term valuation effects of bank acquisitions," Journal of Banking & Finance, Elsevier, vol. 18(6), pages 1135-1154, December. [Downloadable!] (restricted)
  7. Boehmer, Ekkehart & Masumeci, Jim & Poulsen, Annette B., 1991. "Event-study methodology under conditions of event-induced variance," Journal of Financial Economics, Elsevier, vol. 30(2), pages 253-272, December. [Downloadable!] (restricted)
  8. Bollerslev, Tim & Chou, Ray Y. & Kroner, Kenneth F., 1992. "ARCH modeling in finance : A review of the theory and empirical evidence," Journal of Econometrics, Elsevier, vol. 52(1-2), pages 5-59. [Downloadable!] (restricted)
  9. Bar-Yosef, Sasson & Brown, Lawrence D, 1977. "A Reexamination of Stock Splits Using Moving Betas," Journal of Finance, American Finance Association, vol. 32(4), pages 1069-80, September. [Downloadable!] (restricted)
  10. Houston, Joel F. & Ryngaert, Michael D., 1994. "The overall gains from large bank mergers," Journal of Banking & Finance, Elsevier, vol. 18(6), pages 1155-1176, December. [Downloadable!] (restricted)
  11. DeGennaro, Ramon P. & Thomson, James B., 1995. "Anticipating bailouts: The incentive-conflict model and the collapse of the Ohio deposit guarantee fund," Journal of Banking & Finance, Elsevier, vol. 19(8), pages 1401-1418, November. [Downloadable!] (restricted)
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  12. 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!]
  13. Brown, Keith C. & Lockwood, Larry J. & Lummer, Scott L., 1985. "An Examination of Event Dependency and Structural Change in Security Pricing Models," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 20(03), pages 315-334, September. [Downloadable!]
  14. Karafiath, Imre, 1994. "On the Efficiency of Least Squares Regression with Security Abnormal Returns as the Dependent Variable," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 29(02), pages 279-300, June. [Downloadable!]
  15. Mikkelson, Wayne H. & Partch, M. Megan, 1986. "Valuation effects of security offerings and the issuance process," Journal of Financial Economics, Elsevier, vol. 15(1-2), pages 31-60. [Downloadable!] (restricted)
  16. Ibbotson, Roger G., 1975. "Price performance of common stock new issues," Journal of Financial Economics, Elsevier, vol. 2(3), pages 235-272, September. [Downloadable!] (restricted)
  17. Engle, Robert F, 1982. "Autoregressive Conditional Heteroscedasticity with Estimates of the Variance of United Kingdom Inflation," Econometrica, Econometric Society, vol. 50(4), pages 987-1007, July. [Downloadable!] (restricted)
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Cited by:
(explanations, 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. Kyle Hyndman, 2005. "Status Quo Effects in Bargaining: An Empirical Analysis of OPEC," Industrial Organization 0511016, EconWPA. [Downloadable!]
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