The Empirical Study on the Relationaships among Market Share, Diversity and Performance for the Banking Industry in Taiwan

[[abstract]]本研究以民國八十四年至九十二年台灣地區本國銀行為分析對象，採用結構－行為－績效之分析模式，並以聯立方程式來探討銀行市場佔有率、多角化程度及經營效率三者間的關係。 結果發現資產總額、員工人數及效率對市場佔有率的影響為正向關係，而多角化及分行數的增加並不利於市場佔有率的提升。員工人數、營業費用及存款成長率的增加有助於多角化發展，但分行數增加並不利於多角化程度的推展。另一方面，促使營運績效提升的因子有資產總額、資本適足性及存放比例，對其皆為正向關係，而分行數及市佔率的增加皆不利於經營績效的提升。另外，市場佔有率對於多角化程度及多角化程度對效率皆無顯著影響效果。回饋效果方面，效率的提升將會使得市佔率增加，但對於多角化並無顯著影響。多角化並無助於利息收入市佔率的提升，反而有負面的影響。[[abstract]]This study uses the structure-conduct-performance approach on the relationships among market share, diversity and efficiency for the banking industry in Taiwan. Simultaneous equations are used to measure the variables relationships for the samples of 41 banks in Taiwan from 1995 to 2003. We find that total value of assets, staff number and efficiency are positive to affect market share, but diversity and branch number have negative impact on market share. Staff number, operation cost and growth rate of deposit would be positive to diversity, but the branch number that increases should have negative effect on diversity. On the other hand, total value of assets, capital adequacy ratio and deposit-load ratio would be positive to efficiency performance, but branch number and market share would have negative impact on performance. In addition, market share would not respond significantly to diversity and diversity would have no significant impact on efficiency. As to feedback effects, efficiency improvement should increase market share but have no significant impact on diversity. Diversity would have no assistance to increase market share, there is a negative influence instead