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  • 學位論文

選擇權淨買壓與隱含波動度

Option Net Buying Pressure and Implied Volatility

指導教授 : 潘璟靜 吳土城

摘要


本研究在針對淨買壓的定義上,不同於以往學者皆遵循Bollen and Whaley (2004)研究之定義方法,而是先依不同的選擇權契約作時間點的排序,並根據其所記錄的每一筆選擇權之前後價格作比較。若後一筆的價格比前一筆大,則定義為買方契約口數;反之則為賣方契約口數。再將所計算出之契約口數相減,其差額乘上該選擇權之delta絕對值作為本研究定義之淨買壓。 本研究以台灣經濟新報資料庫2005年1月到2008年12月之台指選擇權日內資料為樣本,去探討以下幾個問題: 1.不同價內外程度下的台指選擇權,其隱含波動度的變化是否受到淨買壓所影響;2.台灣選擇權市場支持套利限制假說或是學習假說。 實證結果發現,隱含波動度的變化不僅會受到選擇權交易的影響,且價平買權、價平賣權及價外賣權皆有顯著的影響。而在支持假說方面,由於迴歸模型皆無較一致的結果,因此在台灣選擇權市場中不能看出到底是受到學習假說或是套利限制假說的影響。

並列摘要


This paper is different form Bollen and Whaley (2004) on net buying pressure. We define the difference between the number of buyer-motivated contracts traded each day and the number of seller-motivated contracts traded. If trades executed at a price above (below) last price are categorized as buyer-motivated (seller-motivated) The difference is computed on a series by series basis and is multiplied by the absolute value of the option’s delta to express demand in index equivalent unit. This paper uses the intraday data during January 2005 to December 2008 from TEJ and discusses the following topics. 1. The net buying pressure whether influences TXO option implied volatility change under different moneyness categories? 2. TXO option market supports limits to arbitrate hypothesis or learning hypothesis? The results of empirical test find that implied volatility is affected by options trade, and ATM call 、ATM put and OTM put are remarkable. In regression tests, the four models present the inconsistent analysis results so we can’t find that TXO option market is affected by either limits to arbitrate hypothesis or learning hypothesis.

參考文獻


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姜書甄 (2004),淨買壓解釋隱含波動度微笑現象。淡江大學財務金融研究所碩士論文。
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被引用紀錄


林雅惠(2011)。投資人淨買壓對隱含波動率之探討〔碩士論文,淡江大學〕。華藝線上圖書館。https://doi.org/10.6846/TKU.2011.00897

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