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İMKB’de Sektör Betalarının Tahmininde Tek Endeks Piyasa Modeli ve Varsayımlarının Geçerliliği Üzerine Bir Analiz

An Analysis of Single Index Market Model and Its Assumptions’ Validity in Estimating Sector Betas at Istanbul Stock Exchange

Journal Name:

  • Dokuz Eylül Üniversitesi İktisadi ve İdari Bilimler Fakültesi Dergisi

Publication Year:

  • 2012

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
This study aims examination of statistical properties of single index market model. Moreover, the fulfillment degree of basic assumptions related with the model is researched. Daily, weekly, and monthly logarithmic industry portfolio returns covering 2000-2012 period are used and ISE-100 index is chosen to represent the market portfolio. Main goals of this research are to investigate statistical significance of the sector betas, the accuracy of the model specification, ARCH effect, and autocorrelation and heteroscedasticity problems. It can be said that single index model based on daily return interval does not satisfy econometrical and statistical assumptions. Furthermore, it is observed that the fulfillment degree of basic assumptions increases as the return interval gets wider.
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Abstract (Original Language): 
Bu çalışmada tek endeks piyasa modelinin istatistiksel özelliklerinin incelenmesi amaçlanmıştır. Buna ek olarak model ile ilgili temel varsayımların karşılanabilme düzeyi araştırılmıştır. 2000-2012 dönemi baz alınarak günlük, haftalık ve aylık bazda sektörel logaritmik getiriler kullanılmış, piyasayı temsilen İMKB-100 endeksi seçilmiştir. Sektör betalarının istatistiksel anlamlılığı, model tanımlamasının doğruluğu, ARCH etkisi, otokorelasyon ve değişen varyans sorunlarının incelenmesi, araştırmanın temelini oluşturmaktadır. Günlük getiri bazında kurulan modellerin istatistiksel ve ekonometrik açıdan sorunlu olduğu ifade edilebilir. Öte yandan getiri aralığı genişletildikçe temel varsayımların karşılanma oranında iyileşme olduğu gözlenmiştir.
FULL TEXT (PDF): 
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  • 2
163-185
  • Turkish

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REFERENCES

References: 

Abell, J. D. ve T. M. Krueger (1991), Serial Correlation in the Single Index
Market Model, Journal of Economics and Finance, Vol. 15, No.2, 69-81.
Aber, J. W. (1976), Industry Effects and Multivariate Stock Price Behavior,
Journal of Financial and Quantitative Analysis, November, 617-624.
Bera, A. (1986), Conditional and Unconditional Heteroscedasticity in the
Market Model, http://www.archive.org/details/conditionaluncon1218bera,
1/10/2012.
Box, G. E. P. ve D. R. Cox (1964), "An Analysis of Transformation",
Journal of the Royal Statistical Society, Series B, 211-243.
Kayalıdere/İMKB’de Sektör Betalarının…
178
Brown, S. J. ve J. B. Warner (1985), Using Daily Stock Returns (The Case
Of Event Studies), Journal of Financial Economics, 14, 3-31.
Cable, J. ve K. Holland (2000), Robust vs. OLS Estimation of the Market
Model: Implications for Event Studies, Economics Letters, 69, 385-391.
Carroll, T. ve J. Collins (2002), Volatility Models and the ISEQ Index,
http://euclid.ucc.ie/pages/staff/carroll/papers/iseqweb.pdf, 07/10/2012.
Cohen, K. J. ve J. A. Pogue (1967), “An Empirical Evaluation of
Alternative Portfolio-Selection Models”, The Journal of Business, Vol. 40, No.
2,166-193.
Corhay, A. ve A. T. Rad (1996), Conditional Heteroskedasticity Adjusted
Market Model and an Event Study, The Quarterly Review of Economics and
Finance, Vol. 36, No. 4, 529-538.
Coutts, J. A., T. C. Mills ve J. Roberts (1995), Misspecification of
the Market Model: The Implications for Event Studies, Applied Economics
Letters, Vol. 2, No. 5, 163-165.
Fabozzi , F. J. ve J. C. Francis (1978), Beta as a Random Coefficient,
Journal Of Financial And Quantitative Analysis, Vol. 13, No.1, 101-116.
Fabozzi, F. J., J. C. Francis, ve C. F. Lee (1980), Generalized Functional
Form For Mutual Fund Returns, Journal of Financial And Quantitative
Analysis, Vol.15, No.5, 1107-1120.
Gujarati, D.N. (2006), Temel Ekonometri, Çev.: Ü. Şenesen ve G.G.
Şenesen, Literatür Yayıncılık, İstanbul.
Kennedy P. (2006), Ekonometri Kılavuzu, Çev: Muzaffer Sarımeşeli, Şenay
Açıkgöz, 5. Baskı, Gazi Kitabevi, Ankara, 2006.
Küçükkocaoğlu, G. ve A. Kiracı (2003), Güçlü Beta Hesaplamaları,
http://www.baskent.edu.tr/~gurayk/kisiselbeta1.pdf, 10/10/2012.
Lehmann, B. ve A. Warga (1985), Optimal Distribution-Free Tests and
Further Evidence of Heteroscedasticity in the Market Model: A Comment, The
Journal Of Finance, Vol. 40, No. 2, 603-605.
McDonald, B. (1983), Beta Nonstationarity The Use of the Chen and Lee
Estimator: A Note, Journal of Finance, Vol.38, No.3, 1005-1009.
Dokuz Eylül Üniversitesi İktisadi ve İdari Bilimler Fakültesi Dergisi,
Cilt:27, Sayı:2, Yıl:2012, ss.163-185.
179
McDonald, B. ve C. F. Lee (1988) , An Analysis of Nonlinearities,
Heteroscedasticity, and Functional Form in the Market Model, Journal of
Business & Economic Statistics, Vol. 6, No. 4, Oct., 505-509.
Mills,T. C. ve J. A. Coutts (1996), Misspecification Testing and Robust
Estimation of the Market Model: Estimating Betas for The FT-SE Industry
Baskets, The European Journal of Finance, Vol. 2, No. 4, 319-331.
Schwert, G. W. ve P. J. Seguin (1990), Heteroscedasticity in the Stock
Returns, Journal of Finance, Vol. 45, No.4,1129-1155.
Sharpe, W. F. (1963), “A Simplified Model for Portfolio Analysis”,
Management Science, Vol. 9, No.2, 277-293.

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