本研究旨在探究本國銀行改制成金融控股公司,與金融控股公司相互合併,是否影響台灣地區放款市場之結構。本研究選取營業期間民國86年至93年止,研究對象共計41家本國銀行。參考Schmidt and Sickles(1984)與Cornwell, et al(1990)提出處理橫斷面與時間數列合併資料的成本函數模型,在不完全競爭市場假設下,推導利潤極大化一階條件,並結合總成本函數與成本份額方程式,組成一個包含五條方程式之聯立迴歸方程式體系,推估本國銀行之成本函數。探討本國銀行加入金融控股公司後,是否引導本國銀行朝不完全競爭市場邁進。研究結果發現本國銀行確實處於不完全競爭市場,且加入金融控股公司後,引導本國銀行產業朝不完全競爭市場邁進。
The purpose of this study is to explore the affections of loan market from establishing Financial Holding Co., Ltd., for confirming the market structure of Taiwan's Banking Firms. This study used 41 banks over the period 1997-2004, and adopted cost function used by Schmidt and Sickles(1984) and Cornwell, et al(1990).Under the assumption of profit maximization, first, this study derives the first-order conditions for each banking firm by choosing two output quantities. Those optimal conditions together with the cost function and share equations form the system of five regression equations that will be applied to estimate the cost function and conjectural variations of Taiwan's Banking Firms. Analyzing the empirical results, we can understand the affections of establishing Financial Holding Co., Ltd., on market structure in Taiwanese Banking. The empirical results have shown that: The market structure of Taiwanese banking is imperfect competition. Establishing Financial Holding Co., Ltd. will lead Taiwanese banking firms into imperfect competition.