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摘要


恐慌指數(Volatility Index ,VIX)為芝加哥選擇權交易所(CBOE)市場波動率指數,通常用於衡量標準普爾500指數選擇權的隱含波動性指數,也作為預期未來30天市場波動性的一種指標,此外也被認為可以反映投資人情緒。本研究主要探討標準普爾500指數(S&P500 Index)、那斯達克隱含波動率指數(NASDAQ Volatility Index,VXN)、以美元計價的黃金、以美元計價的白銀、歐元兌美元匯率與美元指數等變數因子的波動對VIX的影響。資料時間採用2007年到2017年的日資料,並以切時間段的方式來檢視本研究樣本全期間、全球金融海嘯發生期間、歐債危機發生期間以及後續期間,共4個時間段中各因子對VIX指數的波動影響。本研究發現當經濟波動小時,VIX指數處在低點,市場上投資人會傾向進入標普500指數與白銀等投資商品,本文根據文獻回顧找出VIX會與標普500指數和白銀價格指數呈顯著負相關;當經濟波動大時,VIX指數位在高點,市場上投資人傾向持有美元、黃金等避險商品,此時市場上投資情緒低迷,VIX指數會與那斯達克隱含波動率指數、美元指數、歐元兌美元匯率還有黃金價格間呈現顯著正相關。本研究運用Python編寫APT(套利定價理論)模型,進行多因子廻歸分析,並以各因子系統性風險β係數(Beta)測量其波動影響程度。本研究結果顯示,標普500指數、那斯達克隱含波動率指數、黃金價格、白銀價格、歐元兌美元匯率與美元指數對於VIX指數是具有顯著的影響關係。

並列摘要


Volatility Index (VIX) is market volatility Index of Chicago Board Options Exchange (CBOE), commonly used to measure the implied volatility index of the Standard and Poor's 500 index options, as well as an indicator to market volatility for the next 30 days. It is also considered to reflect investors' sentiment. This study focuses on the impact of Standard and Poor's 500 (S&P 500) Index, NASDAQ Volatility Index (VXN), gold spot price, silver spot price, EUR/USD exchange rate, and the U.S. dollar index on VIX. This study uses APT (Arbitrage Pricing Theory) model which was programmed in Python to perform the multi-factors regression analysis. The degree of impact was measured by the Beta coefficient of each factor. The samples are the daily transaction data from 2007 to 2017, and classified the period into four to discuss the impact of above factors on VIX in each period. These four periods are the "financial crisis period" (2007 to 2009), "European debt crisis period" (2010 to 2012), "postcrisis period" (2013 to 2017) and "full period" (2007 to 2017). The main results show that the S&P 500 Index, NASDAQ Volatility Index, gold spot price, silver spot price, EUR/USD exchange rate, and the U.S. dollar index have a significant impact on the VIX.

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