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    Title: Three essays on innovation, intervention, and market efficiency
    Other Titles: 創新、調節及市場效率的論文三篇
    Authors: 王友珊;Wang, Yu-shan
    Contributors: 淡江大學財務金融學系博士班
    聶建中;Nieh, Chien-chung;鍾惠民;Chung, Huimin
    Date: 2005
    Issue Date: 2010-01-11 01:08:17 (UTC+8)
    Abstract: 自1980年代初期全球金融市場開始發生大變革,全球各國先後解除利率與匯率的管制,進而強化了不同金融市場間的連動性。資訊與通訊科技的快速發展,也加速金融市場的變化與改革。隨著金融市場的不斷推陳出新,衍生出各式金融商品,使得金融體系結構相繼調整。此外,國際金融制度持續演化,無論是匯率、利率、股價、指數期貨,時時刻刻在波動。基此,本文希冀分別針對金融商品創新、政府調節與制度變革對金融市場的衝擊加以討論。
    由於金融動態的日新月異與金融市場的蓬勃發展,人們對處理數據、訊息的能力大為提高,若想隨時掌握金融動態,更深入分析金融情勢波動原因,必須擁有處理大量數據的能力與技術。財務計量領域自二十世紀末期迅速發展,藉由財務計量模型,有助於提供基金管理者與投資者之投資評估決策、資產配置與風險管理之參考。財務計量模型是建立在某些先決假設條件的基礎上,利用計量方法,對金融管理當局採用金融政策、交易機制與引進新金融商品之影響進行實證研究,能對於各種金融議題提供深入探索。在金融理論與實證中已有許多研究應用計量經濟模型,來分析金融市場之變化。然本文的整體價值在於能夠效率且精確地運用財金計量模型之建構方法(包括自我迴歸遞延落差模型、日內跨期迴歸模型以及資訊分享模型)來剖析財金資訊。本文實證研究發現貨幣供給增加、期交稅調降、國安基金進場調節以及迷你期貨契約加入等因素發生變化時,分別對於金融市場之匯率、定價效率與資訊傳遞過程,產生顯著的影響與衝擊。研究更進一步發現,當貨幣供給增加時,台幣匯率不易發生短期的泡沫投機現象;此外,調降期交稅可增進市場效率、國安基金進場調節導致金融市場定價無效率;最後,研究亦發現迷你型期貨契約會主導羅素期貨市場資訊分享過程。綜言之,本論文結合財務金融理論與計量經濟模型,利用財經實際案例分析來貫穿理念;並以效率、簡單、具體步驟來分別探討外匯市場台幣匯率過度反應之情形與期貨市場之定價效率和資訊傳遞過程。
    本論文包括三篇子題:第一部分為ARDL方法在外匯市場之運用,利用臨界區間法來檢測匯率與總體經濟變數是否存在長期均衡關係,並探討台灣貨幣供給的增加,對於匯率過度反應的情形。該子題之研究克服了變數間同時存在I(1)及I(0)整合級次不一致的問題,並提供證據讓進出口商瞭解台灣外匯市場非理性行為之特性以及台灣外匯市場在短期間之匯率過度波動的泡沫投機現象不易發生,進而有助於企業評估避險策略,以降低營運風險。第二部分應用虛擬變數之日內跨期迴歸模型來探討市場變革對台灣期貨市場的影響,實證研究發現政府採取期交稅調降政策能增進市場效率,國安基金進場調節導致妨礙市場效率。該子題之研究結果可提供新興衍生性市場之金融管理當局選擇施政措施與制度變革之參考,惟有採取適度的調節與公平合理的稅制,才能使市場價格機能充分運作。第三部分自電子化交易之迷你羅素2000推出後,尚未有研究探討羅素2000指數之傳統期貨與迷你期貨兩者間的價格動態關連性。本文利用資訊分享模型,發掘公開喊價之正規型指數期貨與電子化交易之迷你型指數期貨的資訊傳遞過程,主要貢獻在於發現迷你羅素2000期貨主導市場資訊傳遞能力,顯示電子化交易系統具資訊效率與運作效率的優勢。該子題之研究提供交易機制(公開喊價交易、電子化交易)與契約設計(傳統期貨、迷你期貨)一項有利的證據。對投資人而言,有助於投資羅素2000指數期貨之參考。對全球交易所而言,本文的例證支持政府當局將交易機制與契約規格設計做調整,的確有助於達到健全市場發展的目標。
    Major changes in the global financial market began in the early 1980s. The lifting of restrictions on interest rates and exchange rates strengthened the interconnectedness of cross-markets. The rapid development of information and communication technologies accelerated changes in the financial markets. Following the renewal of financial markets, a variety of new financial derivative products was generated, causing successive adjustments in the structures financial systems. In addition, international finance was subjected to unrelenting assaults, with exchange rates, interest rates, stock prices and index futures not only changing daily, but fluctuating by the minute and even by the second. In view of this, the aim of this paper is to discuss the impact of policy and system reform on financial markets.
    Our data processing capabilities have increased greatly along with the ever-changing financial dynamics and the vigorous development of the financial markets. If we wish to understand the financial dynamics at each point in time and analyze the causes of changes in financial conditions, there is an urgent need for econometric techniques that can instantly process large volumes of data. If we can conduct suitable econometric analyses on financial markets data, that would be important indeed. The field of financial econometrics developed rapidly at the end of the 20th century, and it goes without saying that we can benefit from the broad range of applications of financial econometric models, which can be helpful in evaluating investment strategies, asset allocation and risk management, and can also be adjusted according to users’ needs. Financial econometrics is built upon a hypothetical basis, and making use of econometric methods and conducting research into phenomena such as the course of development of financial systems and tools can provide deep insight into numerous financial areas. For this reason, this paper applies modern financial econometrics separately to different financial markets. In financial theory and empirical studies, there is a growing number of applied econometric analysis techniques. The overall value of this paper is in the ability to quickly and accurately apply these new econometric models (including ARDL model, intertemporal regression model and information share model) to analyze financial data, unearthing the effects that these change factors have on financial phenomena through empirical studies, thereby fleshing out new research findings and developments in the field of exchange rate and index futures, and substantiating a financial theory system. To sum up, this paper combines financial theory and econometrics, illustrating concepts through real-life economic and financial examples, introducing relevant documentation and financial theories on foreign exchange and futures markets in clear, concrete steps, and introducing different econometric models that can be applied to the field of finance.
    This dissertation consists of three essays: In the first part, we apply the ARDL methods in foreign exchange markets, enabling the reader to understand the characteristics of the irrational behavior of Taiwan''s foreign exchange market through examples of the overreaction of NT dollar exchange rates to increases in money supply. Research has found that bubble speculative phenomena regarding excessive fluctuation in short-term exchange rates in Taiwan''s foreign exchange market do not easily occur. In the second part, we add dummy variables into intertemporal regression models to explore the effects of market changes on Taiwan’s futures market. The results of empirical studies support the hypothesis that lowering the futures transaction tax will increase market efficiency, and we found that the intervention of the National Stabilization Fund in the market leads to a dampening of market efficiency, and only by reducing unnecessary government intervention can the market pricing mechanism be fully utilized. In the third part: after the introduction of electronically traded and small-sized (E-mini) index futures there was a lack of research into the correlation of price dynamics between Russell 2000 futures and E-mini Russell 2000. This paper explores the information transmission processes of open outcry for Russell 2000 futures and E-mini Russell 2000 through information share model. We found that E-mini Russell 2000 index futures contracts possess the ability to guide price discovery in financial markets, showing that E-trading systems have a superiority in information efficiency and operational efficiency, which will help us understand the characteristics of open outcry trading and E-trading, and can serve as a reference for investing in Russell index futures. In sum, we provide useful evidence for trading mechanism (open outcry trading vs. E-trading) and contract design (regular futures vs. mini futures). To investors, it provides a reference beneficial for investing in Russell 2000 index futures. As for the world''s exchanges, this paper''s examples can help financial management authorities make adjustments in trading mechanism and contract specification design, which will certainly be advantageous in attaining the goal of robust market development.
    Appears in Collections:[財務金融學系暨研究所] 學位論文

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