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比較不同波動率模型下台灣股票選擇權之評價績效

Comparison of Performances of Taiwan Stock Option Pricing with Different Volatility Models

摘要


本文利用2003年1月1日至2003年12月31日間在台灣期貨交易所發行之台灣股票選擇權,應用Neuro-Fuzzy評價模型,分別搭配四種波動率模型,歷史波動率、隱含波動率、GARCH波動率、GJR-GARCH波動率,對台灣七檔股票選擇權進行評價與套利。評價績效之指標為平均絕對誤差(MAE)、平均絕對誤差率(MAPE)、誤差均方根(RMSE)與Theil's U 進行評估,並且利用Mann-Whitney-Wilcoxon檢定。 研究結果顯示,在搭配不同波動率下之Neuro-Fuzzy評價模型的績效,以歷史波動率、GARCH波動率、GJR-GARCH波動率評價績效最好。在套利方面,分別對七檔股票選擇權進行套利交易模擬,研究結果發現,有五檔股票選擇權可獲得超額報酬。

並列摘要


The study is based on the transaction data from the Taiwan stock option issued by TIFEX from January 1, 2003 to December 31, 2004. Applying Neuro-Fuzzy with four volatility models, namely historical volatility, implied volatility, GARCH volatility, GJR-GARCH volatility to the pricing and arbitraging of seven stock options. Further the study evaluates the efficiency of pricing performance of Neuro-Fuzzy models on the prices of the stock option. The MAE, MAPE, MSE, Theil's U and Mann-Whitney-Wilcoxon test are applied to evaluate the pricing performance. Empirical results show that pricing performance of historical volatility, GARCH volatility, GJR-GARCH volatility is better than implied volatility models. Among seven stock options return, we find that the five obtain excess return.

並列關鍵字

stock options ANN Fuzzy ANFIS volatility model

參考文獻


施東河、王勝助(2001)。認購權證評價模式與避險部位之研究-混合式智慧型系統的應用。資訊管理學報。7(2),123-142。
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Bollerslev, T.(1986).Generalized Autoregressive Conditional Heteroskedasticity.Journal of Econometrics.31,307-327.
Chu, S. H.,S. Freund(1996).Volatility Estimation for Stock Index Option: A GARCH Approach.The Quarterly Review of Economics and Finance.36,431-450.

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