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  • 學位論文

運用TAR模型檢測隨機漫步理論:以台灣股票市場為例

Using a TAR model with an autoregressive unit root to test random walks in Taiwan stock market

指導教授 : 陳建勝
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摘要


以往在研究股價波動較多學者運用傳統線性的單根檢定,但傳統線性檢定不能反映出個股的狀態,故本研究增加採用非線性門檻自我回歸模型(Threshold Autoregressive Model,簡稱TAR)來檢測股票市場個股的股價波動及探討台灣股票市場是否依循隨機漫步理論,選取台灣股價加權指數、金融類股及十四檔金融控股之股價指數為研究標的。 研究結果顯示,台灣加權股價指數與金融類股指數之股價波動能從過往的股價波動行為預測未來股價的移動,為不依循隨機漫步理論。

並列摘要


This study investigates the behavior of the stock sectors indices for the Taiwan stock market for the period from 2003 to 2011.Select the Taiwan Weighted Stock Index, financial stocks, and 14 files of the financial holding stock index for the study the subject. Using traditional liner unit root and unconstrained two-regime threshold autoregressive (TAR) model with a unit root developed by Caner and Hansen (2001). Our main findings is that the Taiwan stock exchange capitalization weighted stock index (TAIEX) is a non-linear stationary series and Taiwan stock market prices do not follow random walks.

並列關鍵字

TAIEX random walk stock market TAR model

參考文獻


13. 陳信宏、陳昱志、鄭舜仁(2006),「以時間數列模型檢定台灣股票市場弱式效率性之研究」,管理科學與統計決策第3卷第4期9-17頁。
2. 朱正修(2004),「台灣股市與國際股市連動性之研究」,國立成功大學統計研究學研究所碩士論文。
1. Caner, M.and Hansen, B. E.,(2001)“Threshold autoregression with a Unit Root “, Econometrica, Econometric Society, vol. 69(6), pp. 1555-1596.
2. Chaudhuri, K. and Wu, Y., (2003) “Random walk versus breaking trend in stock prices: evidence from emerging markets“, Journal of Banking and Finance, Vol. 27, pp. 575-592.
3. Dickey, D. A., and Fuller, W. A.,(1979) “Autoregressive time series with a unit root” ,Journal of the American Statistical Association, Vol. 74, pp. 427-431.

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