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衝擊事件下投資人情緒與股價指數動能之研究

The Study of Investor Sentiment and Momentum in Stock Index after Shocks

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摘要


本文以投資人情緒觀點,探討衝擊事件下股票市場指數的價格行為。證據顯示,在正衝擊事件後的短窗口下(4日)伴隨著正異常報酬,支持反應不足假說;負衝擊事件則呈現過度反應的趨勢。不僅如此,在面對衝擊事件時,無論是機構投資人或非機構投資人,皆呈現類似展望理論中的損失嫌惡情形。其次,不同的市場狀態,投資人呈現不同的情緒反應;處於正衝擊事件下,投資人愈樂觀、散戶賣起愈少、法人買超愈少,動能規模愈大;負衝擊事件下,市場強度增加時,則動能規模較大。在投資情緒與指數動能動態關係中,「法人的交易型態」和「投資人從眾行為」具有領先指數報酬的傾向,其他情緒變數則多為落後指標。

並列摘要


This study mainly investigates price behavior based on the view of investor's sentiment. The conclusions are as follows: First, consistent with the under-reaction hypothesis, positive shocks are followed by positive abnormal returns in short windows. Next, the size of momentum profits is larger as closed-end hind discount is decreased, institutional investors tend to be buying less, and retail investors are selling less after the positive shocks. Under the influence of negative shocks, the size of momentum profits is larger as investors tend to be selling more. Moreover, a lead-lag relationship exists between the Taiwan stock index and investor's sentiment.

參考文獻


許溪南、郭玫秀、鄭乃誠(2005)。投資人情緒與股價報酬波動之互動關係:台灣股市的實證。台灣金融財務季刊。6(3)
李春安、羅進水、蘇永裕(2006)。動能策略報酬、投資人情緒與景氣循環之研究。財務金融學刊。14(2)
Ajayi, R.A.,Mehdian, S.,Perry, M.J.(2006).A Test of US Equity Market Reaction to Surprises in An Era of High Trading Value.Applied Financial Economics.16,461-469.
Working paper
Arbel, A.,Jaggi, B.(1982).Market Information Assimilation Related to Extreme Daily Price Jumps.Financial Analysts Journal.60-66.

被引用紀錄


周政光(2012)。情緒指標與股價報酬相關性探討 -以台灣電子類股指數為例〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu201200033
丁文珏(2010)。投資人情緒、從眾行為對動能績效之影響〔碩士論文,亞洲大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0118-1511201215464558
王瑋豪(2011)。投資人情緒指標與股票報酬之研究〔碩士論文,國立臺北大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0023-0507201119072200
蔡芳芸(2012)。投資人情緒對台股指數報酬率的影響〔碩士論文,國立臺北大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0023-3007201203191000
呂世亮(2012)。在考量投資人情緒下探討股票報酬與報酬波動性之關聯性〔碩士論文,國立中正大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0033-2110201613495343

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