本文主要探討富人指數與全球股價指數現貨的關聯性,分析富人指數對股價指數現貨而言是領先指標亦或是落後指標。本文採用3個富人指數及15個重要的全球股價指數現貨(分為亞洲、美洲與歐洲區),資料期間為2002年1月至2010年11月之月報酬,利用向量自我迴歸模型及Granger因果關係檢定,分析富人指數與全球各股價指數現貨之間的領先或落後關係及其因果關係,最後利用衝擊反應分析及變異數分解來分析在其他衝擊不變下,特定衝擊對內生變數動態之影響。本文的實證結果發現(1)紅酒指數對台灣加權股價指數、韓國綜合股價指數與德國DX指數而言有領先關係,亦即紅酒指數對這些國家的股價指數現貨而言有價格發現(亦或是資訊傳遞)的效果,投資人可藉由觀察紅酒指數來進行可獲利的投資策略。(2)整體結果顯示,富人指數對全球股價指數現貨平均而言是個落後指標。
This paper first investigates the lead or lag relationship between richness index and global stock index by using three richness indices, say Liv-ex 100 Fine Wine Index, ML Lifestyle Index, and World Luxury Index, and 15 major stock indices located in Asia, America, and Europe Areas. Our sample is covering about 9-year period from 2002/Jan to 2010/Nov. The results of VAR model and Granger Causality test show that Liv-ex 100 Fine Wine Index tend to be a leading indicator for Taiwan stock index, Korea composite Stock Price Index, and Germany DX index in general. The result implies that Liv-ex 100 Fine Wine Index roles a price discovery (predictability) and could be a good predictor for investors in these three countries. Hence, profitable investment strategy can be implemented through the observation of Liv-ex 100 Fine Wine Index. Furthermore, the results also represent that richness indices are a lag indictor related to most global stock indices, especially in Asia and America areas. Overall, most of evidence proposes that richness indices are a lag indicator even though some contradictive results emerged in Taiwan, Korea, and Germany.