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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

台股情緒指標建構及與股市關係 / Construction of Sentiment Index and the Relationship between Sentiment Index and TAIEX Return

吳佩蓉, Wu, Pei Jung Unknown Date (has links)
本研究最主要的貢獻為建構一具台灣股市投資人情緒指數並檢測投資人情緒指標與台灣股市的關係。本研究以台灣股票市場為背景,研究期間為2001年1月至2010年12月。利用Baker, Wurgler and Yuan在2009年提出的方法以Volatility Premium, Number of IPOs, First Day Return of IPOs, Turnover Rate四個變數編製台灣股市投資人情緒指數,並探討台灣股市投資人情緒指數變動量與台股大盤報酬之間的領先落後關係。 實證結果發現,在較短的時間,如月資料,台股大盤報酬會影響下一期的台灣股市投資人情緒指數變動量,而在較長的時間,如季資料,台灣股市投資人情緒指數變動量會影響四期後的台股大盤報酬,即短期台灣股市投資人情緒指數變動量為大盤報酬之落後指標,長期則為大盤報酬之領先指標,短期原因為投資人情緒指數受大盤報酬影響,而易有追高殺低現象,長期雖投資人情緒領先大盤報酬的結果在統計上顯著,但經濟上並無顯著意義,另一方面,台股大盤報酬與台灣股市投資人情緒指數變動量間存在正相關,即不能以台灣股市投資人情緒指數變動量預測股市泡沫。 / The main contribution would be the construction of the sentiment index in Taiwan stock markets and examining the relationship between the variation of the sentiment index and Taiwan stock market returns. The background is Taiwan stock markets. The sample period is from January 2001 to December 2010. We use the method in Baker, Wurgler and Yuan (2009) to measure investors’ sentiment and explore the relationship between the variation of the sentiment index and Taiwan stock market returns. The empirical result reveals that in monthly data, Taiwan stock market returns is the leading indicator of the variation of investment sentiment. In a longer term, we mean the quarterly data in this paper, the situation changes. In quarterly data, the variation of the investment sentiment is the leading indicator of the Taiwan stock market returns. In addition, instead of a negative correlation between the stock market returns and our sentiment index, we prove that our sentiment index have a positive impact on stock market returns. Therefore, we could not use this sentiment index to forecast future economic bubbles.
2

是否投資人恐慌情緒會影響台指期貨與現貨的價格發現功能

曾祥智, Shyang-Jyh Tseng Unknown Date (has links)
過去文獻研究對於各國的指數衍生性商品與現貨市場間之關係,多數專注在其交易成本、放空限制等因素對資訊傳遞與價格發現功能的影響;本研究以台指期貨與現貨價格間的共整合關係與領先落後關係為出發,加入以台指選擇權波動率指數的變動為投資人情緒指標,檢視在投資人情緒為恐慌及樂觀兩種極端情緒情形下,是否因情緒波動影響投資策略、進而對台指期貨與現貨的關係造成影響,並且在兩種極端的情緒下受到的影響是否對稱、與一般情形時的台指期貨與現貨間關係又是否一致。 研究方法以誤差修正模型為基礎,探討台指期貨與現貨價格間的共整合與價格發現功能,並且應用Tsay(1998)提出的非線性多變量門檻模型,以台指選擇權波動率指數的變動為門檻變數,依模型設定選擇最適的門檻值,將兩市場的價格資料依投資人情緒為恐慌、樂觀或無明顯差異作分類,在各個狀態下以誤差修正模型作迴歸,檢視投資人情緒對台指期貨與現貨價格間關係的影響。 實證結果顯示台指期貨與現貨價格間存在共整合關係,並且主要由台指現貨往長期均衡價格修正,台指期貨平均約領先現貨反應資訊達15~20分鐘,而現貨則無明顯領先期貨的情形;另一方面,在投資人情緒為恐慌或樂觀的極端情緒下,台指期貨與現貨間關係存在對稱性,台指期貨與現貨均會往長期均衡價格修正,當投資人有恐慌情緒,價格將往負向修正,當投資人有樂觀情緒時則往正向修正,若投資人在普通情緒下則不存在一致性的修正趨勢,由此可知市場對未來股市的預期影響投資人情緒,進而其投資操作策略發生變化,對台指期貨與現貨市場間的關係有顯著的影響。
3

選擇權波動度交易策略之探討-以台指選擇權為例 / A study of volatility trading strategies: evidence from Taiwan index options

賴星旅, Lai, Hsing Lu Unknown Date (has links)
本文考量波動度不對稱效果(Volatility Asymmetric Effect)與均數回歸(Mean Reverting)兩個特性,並考量台股市場特性,嘗試建立一個適合台灣市場的波動度交易策略。利用GARCH(1,1)波動度與VIX指標建構第一個交易訊號,並建立當日沖銷部位。以賺取日內行情為出發點,利用時間序列模型捕捉波動度的高估或低估且搭配純跨式(Pure Straddle)策略或根據Delta調整後的跨式(Adjusted Straddle)策略。第二個交易訊號則是利用市場敏感指標,觀察外資與自營商在交易部位與未平倉部位的變化,找出對於波動度的影響。建立由選擇權與期貨組成的Delta-Hedged部位,藉由觀察市場上主力籌碼的變化,動態調整部位契約,尋找波段之間的獲利機會。 實証部分以期交所公布的每日交易資料與VIX日資料,利用2007至2008兩年的歷史資料,估計參數與測試交易訊號。樣本外期間為2009年1月開始至3月結束共55個交易日。考量交易成本後,兩個不同型態的交易訊號,仍然能夠藉由本研究的策略,獲得正的報酬。本文認為台灣為一個淺碟市場,過度反應資訊的特性,讓波動度策略出現獲利的機會。藉由這個波動度交易系統的研究,除了讓資金豐沛的機構投資人使用外,也能夠讓一般投資大眾建立自己的波動度交易策略 關鍵字:波動度交易,選擇權交易策略,GARCH(1,1),VIX,市場情緒指標 / Trying to apply a preliminary study of volatility trading strategies in Taiwan derivative market is the topic of this dissertation. Capturing the market movement or even the dynamic of underlying asset is a Pandora’s Box for academic researchers and industry participants. Mean-reverting and asymmetrical effects are the two special characteristics of volatility for us to design our trading system according to the previous empirical studies. In our study, we use different type of volatility signal to capture the trading opportunities. Use the new released information form TAIFEX including VIX and Position Structure of Institutional Traders to design our signal. We apply the idea to use pure option position and delta-hedged position as our trading tools in this volatility trading system and look for the opportunities between realized volatility and implied volatility. An over-reaction may rises the uncertainty and also lead the market volatility change coherently. We use history data from 2007 to 2008 test our trading signal and parameters. The out sample period is from 2009 January to 2009 March which has 55 trading days to simulate our strategies. In the end, we see a positive result in both trading signals which earns positive return after considering the trading cost. Key words: Volatility Trading, Market Sentiment Indices, Option Strategies, VIX, GARCH(1,1)

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