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  • 學位論文

波動率微笑預測匯率報酬分析

Can OTC Currency Option Volatility Smile Predict Currency Future Returns?

指導教授 : 王耀輝
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摘要


有許多文獻都探討選擇權市場波動率微笑與現貨市場報酬間的關係,許多實證研究顯示波動率微笑的確對於現貨市場的未來報酬有預測的作用,代表選擇權市場隱含著現貨市場的資訊。本篇文章中與之前的文獻不同的地方在於利用OTC市場的資料,而不是公開市場的資料,來驗證外匯選擇權與外匯未來的報酬之間的關係。 我們將外匯報酬與從波動率微笑中定義的變數作迴歸,發現只有有關日幣的匯率迴歸所得到的結果具有顯著性。這種線性的顯著性可以維持超過20個禮拜。但我們利用迴歸所得到的結果建立買高賣低策略所得到的報酬並沒有顯著異於買進並持有的策略所得到的報酬。因此我們無法從波動率微笑中所得到的資訊建立具有額外報酬的投資組合。

並列摘要


Lots of previous studies show the volatility smile in option markets has significant predictive power for future stock returns. In this paper we want to exam the predictability of measure of volatility smile for future currency returns. Different from previous studies, we use OTC option data instead of exchange market data. By regressing future currency returns on the measures of volatility smile, we find the measures of volatility smile for exchange rates related to Yen have significant predictability to future currency returns. The predictability persists up to 20 weeks. However, the two Long-Short strategies cannot get extra returns compared with the Buy-and-Hold strategy.

參考文獻


Aliber, R.Z., 1973, The interest rate parity theorem: a reinterpretation. Journal of Political Economy 81, 1451-1459.
Ang, A., R.J. Hodrick, Y. Xing, and X. Zhang, 2006, The cross-section of volatility and expected returns, Journal of Finance 61, 259-299.
Bates, D.S., 1991, The crash of '87: was it expected? The evidence from options markets, Journal of Finance 46, 1009-1044.
Bates, D.S., 2003, Empirical option pricing: a retrospection, Journal of Econometrics 116, 387-404.
Bollen, N.P.B., and R.E. Whaley, Does net buying pressure affect the shape of implied volatility functions? , Journal of Finance 59, 711-753.

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