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  • 學位論文

REITs之從眾行為:以美國市場為例

Herding Behavior in REITs: The Case of the U.S. Market

指導教授 : 李命志 鄭婉秀

摘要


本文研究旨在檢視美國權益型REITs是否存在從眾行為之現象,並以CSAD模型與非線性回歸分析從眾行為在特殊期間是否有不同的變化,最後彙整影響REITs從眾行為之總體經濟變數與其影響方向。研究期間自2007/11/01至 2014/06/30,得以涵蓋金融海嘯期間及後期,可提供投資人作為投資之依據。實證結果顯示: 1. 從眾行為存在顯著非線性行為,當市場報酬在極端正向或負向的情形下,從眾行為顯著存在。 2. 金融海嘯期間,從眾行為效果更為顯著。顯示混沌的投資環境會使投資人忽略基本面的訊息,投資行為較不理性。 3. 以波動性指數(volatility index, VIX)代表投資人的情緒,發現當投資人對未來恐懼時,從眾行為效果就會顯著。此情形在金融海嘯期間更為明顯。 4. 以歷史價格走勢為依據的動能效應因子(momentum factor)也顯著影響從眾行為,在金融海嘯期間一樣具有影響力。 5. 同步考量波動性指數與動能效應,發現波動性指數的影響效果強於動能效應。

並列摘要


Abstract: This study investigates the herding behavior of equity REITs in the U.S. market. We also analyze the herding behavior in the financial crisis period for understanding the difference. Finally, some macroeconomic variables are analyzed in the model for detail investigating the herding behavior in the REITs market. The sample period is from 2007/11/01 to 2014/6/30, combining the whole financial crisis period and the later period. The empirical results are useful to investors. The empirical results are reported as follow. 1. Herding causes the nonlinear relationship between return dispersion and market return. The dispersion would be lower in extreme conditions, if herding occurs. 2. The herding behavior is stronger in the financial crisis periods. It indicates that investors would ignore the information with the irrational investment behavior. 3. Volatility index is a proxy for investor sentiment in this paper. We observe that herding effects in REITs are associated with investors’ perception of uncertainty. The relationship is stronger in the financial crisis period. 4. Momentum strategy, buying past year’s winner stocks and selling short past year’s loser stocks, is also related to the herding behavior. 5. The herding behavior is more sensitive to volatility index than momentum factor while considering both factors in the model simultaneously.

參考文獻


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參考文獻

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