A Tree-Based Approach to Modelling Stock Exchange Index Returns in EU Countries

Yıl 2011, Cilt: 11 Özel Sayı, 1 - 8, 01.11.2011

Alenka Kavkler Mejra Festıc

Öz

In this paper, we examine the stock exchange index returns for the panel of 27 EU countries in the last ten years. Our method of choice is a special kind of tree-models, namely modelbased recursive partitioning (MOB). The MOB algorithm uses the generalized M-fluctuation test to examine the parameter stability for a given node. In this investigation, we attempt to explain the returns of the EU stock exchange indices with the help of gross domestic product, interest rates, and other financial and macroeconomic variables. The model-based recursive partitioning algorithm yields four terminal nodes pointing to GDP growth and rate of inflation as the splitting variables. During different inflation and GDP growth regimes, the observed explanatory variables impact the stock exchange index returns with varying intensity. The results are discussed and interpreted in light of the current economic situation

Anahtar Kelimeler

Model-based recursive partitioning , regression trees , stock returns , financial markets

AB Ülkelerinde Borsa Getirilerinin Modellenmesinde Ağaca Dayalı Yaklaşım

Öz

Bu çalışmada son yıl içinde 27 AB ülkesi için hisse senedi endeksi getirileri incelenmektedir. Yöntem, ağaç modellerinin özel bir şeklidir, yani yinelemeli bölünmeye dayanan modeldir (MOB). MOB algoritması, verilen düğüm için parametre istikrarını incelemek için genellenmiş M-dalgalanma testini kullanır. Bu araştırmada AB hisse senetlerinin endekslerinin getirileri; gayri safi yurt içi hasıla, faiz oranları ve diğer finansal ve makro ekonomik değişkenler yardımıyla incelenmeye çalışılmaktadır. Yinelemeli bölünmeye dayanan model algoritması, üleştiren değişkenler olarak gayri safi yurt içi hasıla büyümesine ve enflasyon oranına işaret eden dört uç düğümü verir. Farklı enflasyon ve gayrisafi yurt içi hasıla düzenleri sırasında, gözlenen açıklayıcı değişkenler, hisse senedi endeksi getirilerini değişen yoğunluk ile etkiler. Sonuçlar, mevcut ekonomik durum ışığında yorumlanıp tartışılmaktadır

Anahtar Kelimeler

Yinelemeli bölünmeye dayanan model , regresyon ağaçları , hisse senedi getirileri , finansal piyasalar

Kaynakça

• Adam, A.M., and Tweneboah, G. (2009) “Foreign Direct Investment and Stock Market Development: Ghana’s Eviden- ce” International Research Journal of Finance and Economics, 26:178-185.
• Aizenman, J., and Noy, I. (2005) “FDI and Trade - Two Way Linkages?” NBER Working Paper, No:11403.
• Andersen, G. T., Vega, C., and Diebold, F. X. (2004) “Real-Time Price Discovery in Stock, Bond and Foreign Exc- hange Markets“, NBER Working Paper, No:04-028.
• Andrews, D.W.K. (1993) “Tests for Parameter Instability and Structural Change With Unknown Change Point” Econo- metrica, 61:821-856.
• Babetskii, I., Komârek, L., and Komârkovâ, Z. (2007) “Fi- nancial Integration of Stock Markets among New EU Member States and the Euro Area” Finance a şver - Czech Journal of Economics and Finance, 57: 7-8.
• Baele, L., Ferrando, A., Hördahl, P., Krylova, E., and Mon- net, C. (2004) “Measuring Financial Integration in the Euro Area”, European Central Bank Occasional Paper Series, No:14.
• Baltzer, M., Cappiello, L., De Santis, R., and Manganelli, S. (2008) “Measuring Financial Integration in The New EU Member States” European Central Bank, Occasional Paper Se- ries, No:81.
• Berben, R.P., and Jansen, W.J. (2005) “Comovement in International Equity Markets: A Sectoral View“, Journal of In- ternational Money and Finance, 24: 832-857.
• Borio, C. E., Furfine, C., and Lowe, P. (2001) “Procyclica- lity of the Financial System and Financial Stability: Issues and Policy Options” In: Marrying the macro and micro-prudential dimension of financial stability. Bank for International Settle- ments, 24-31.
• Boyd, J.H., Jagannathan, R., and Hu, J. (2001) “The Stock Market’s Reaction to Unemployment News: Why Bad News is Usually Good for Stocks” NBER Working Paper, No:8092.
• Černy, A., and Koblas, M. (2008) “Stock Market Integrati- on and the Speed of Information Transmission”, Czech Journal of Economics and Finance, 58:1-2.
• Christiansen, C., and Ranaldo, A. (2008) “Extreme Co- exceedances in New EU Member States’ Stock Markets” Swiss National Bank Working Paper, 2008/10.
• Erdogan, B. (2009) “Financial Integration in the European Stock Markets” European Commision Finess Working Papers.
• Fama, E. (1981) “Stock Returns, Real Activity, Inflation, and Money” American Economic Review, 71:545-565.
• Fisher, I. (1930) “The Theory Of Interest” New York, Mac- millan.
• Horobet, A., and Ilie, L. (2007) “On the Dynamic Link Between Stock Prices and Exchange Rates: Evidence from Ro- mania” MPRA Paper, No: 6429.
• Horská, H. (2005) “Český Akciový Trh – Jeho Efektivnost a Makroekonomické Souvislosti” Finance a şver-The Czech Jo- urnal of Economics and Finance, 55(5-6):283–301.
• Knif, J., Kolari, J., and Pynnönen, S. (2008) “Stock Mar- ket Reaction to Good and Bad Inflation News” Journal of Fi- nancial Research, 31(2):141–166.
• Lin, S.C. (2009) “Inflation and Real Stock Return Revisi- ted” Economic Inquiry, 47:783–795.
• Maysami, R.C., Howe, L.C., and Hamzah, M. A. (2004) “Relationship between Macroeconomic Variables and Stock Market Indices: Cointegration Evidence from Stock Exchange of Singapores All-S Sector Indices” Jurnal Pengurusan, 24:47- 77.
• Mohammad, B., and Abdelhak, B. (2009) “The Relations- hip Between Money and Prices in the Maghreb Countries: A Cointegration Analysis” MPRA Paper, No:12741.
• Muradoglu, G., Metin, K., and Argac R. (2001) “Is There Are Long Run Relationship Between Stock Return And Mo- netary Variables: Evidence From Emerging Market?” Applied Financial Economics, 11:641– 649.
• Onay, C. (2007) “Integration of Bulgaria and Romania to the European Union”, The Business Review, 9(1): 119-126.
• Pan, M.S., Fok, R., Chi-Wing, and Liu A.Y. (2007) “Dynamic Linkages Between Exchange Rates And Stock Pri- ces: Evidence From East Asian Markets” International Review of Economics and Finance, 16:503-520.
• Poghossian, T. (2008) “Are “New” and “Old” EU Mem- bers Becoming More Financially Integrated? A Threshold Co- integration Analysis” International Economics and Economic Policy, 6(3):259–281.
• Presbitero, F. A. (2010) “Total Public Debt and Growth in Developing Countries” http://www.csae.ox.ac. uk/conferences/2011-EDiA/papers/608-Presbitero.pdf, (16.02.2011)
• Stavarek, D. (2010) “Exchange Market Pressure and De Facto Exchange Rate Regime in the Euro-Candidates” Romani- an Journal of Economic Forecasting, 13(2):119-139.
• Zeileis, A., and Hornik, K. (2007) “General M-Fluctuation Tests for Parameter Instability”, Statistica Neerlandica, 61(4):488-508.
• Zeileis, A., Hothorn, T., and Hornik, K. (2008) “Model- based Recursive partitioning“, Journal of Computational and Graphical Statistics, 17(2):492-514.