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  • 學位論文

考量風險偏好下之資產投資組合

Portfolio Selection Taking into Account Risk Preference

指導教授 : 江長周
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摘要


2008年金融海嘯發生後,不論銀行在銷售投資理財商品或投信公司在推介投資標的時,都被規範要遵守風險管理,客戶在投資前,也務必要填寫風險承度測驗問卷,以避免理財糾紛發生。 本研究使用Markowitz之投資組合模型,在考量投資人風險偏好前,依自行設定之預期報酬率,求出投資組合最適投資權重;考量投資人風險偏好後,利用國內某銀行對其投資理財客戶於理財前所作之風險承受度測驗問卷,分析投資人對於個人投資行為的風險承受度的理解,依測驗所得分數將風險屬性分為保守型、穏健型及積極型且賦予風險趨避係數,並以Bodie, Kane and Marcus (2011) 的效用函數為基礎的資產配置模式加入MV模型效率前緣迴歸式,找出在不同風險趨避係數下之最適投資組合。 實證結果顯示,未考量風險偏好因素下,投資人會因報酬率因素而選擇高報酬之標的,惟易忽略高報酬背後隠含之風險;考量風險偏好因素後,不同風險偏好的投資人可搭配風險趨避係數,而選擇適合自己的投資組合。本研究能提供銀行理財專員在建議客戶投資理財時之資產規劃參考。

並列摘要


After the 2008 financial tsunami, regardless of the investment banks selling financial products or investment firms recommending investment targets, they are required to comply with risk management. Before investing, customers should fill in the risk tolerance questionnaires to avoid financial disputes. This paper uses Markowitz’s portfolio model to find the optimal investment portfolio weights according to self-set of expected return rate before considering investor risk preference. After considering the investor risk preferences, the risk tolerance questionnaire for investment banking clients of a bank in Taiwan is used to analyze the investors’ understanding of the risk tolerance of individual investment behavior. Based on the scores of the questionnaire test, the risk are divided into the conservative, the stable and the positive types. The risk aversion coefficients are provided. By adding the MV model efficiency frontier regression equation into the utility function of Bodie, Kane and Marcus (2011), the optimal investment portfolio under different risk aversion coefficients is identified. According to the empirical results, without considering risk preference factors, investors will choose targets of high returns due to returns rate. However, investors may easily ignore the underlying risks of high returns. After considering the risk preference factors, investors of different risk preferences may choose the suitable investment portfolios according to the risk aversion coefficient. The findings of this study can serve as a reference for banking financial consultants in providing investment suggestions of asset planning.

參考文獻


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