本研究以Jagadeesh and Titman(1993) 所提出的動能投資策略下的動能獲利當作 市場效率之指標,並以中國市場A、B股差異與金融海嘯事件之特點,研究投資人 類別、投資人集合大小及金融海嘯對市場價格效率影響。 本研究發現結果有4: 1. A股市場具有顯著的反轉現象,B股市場並無顯著的動能或反轉現象。 2. B股市場的價格效率優於A股市場。 3.投資人集合大小不影響市場價格效率。 4. A股市場及B股市場,非金融海嘯期間之價格效率優於金融海嘯期間。
This research aims to explore whether investors types, pool of investors, and financial crisis would affect the market price efficiency. Based on the theory of Jagadeesh and Titman(1993), this research used the profits of momentum strategy as market price efficiency indicators. The results of this research found that there are four: 1. A-share market has a significant reversal phenomenon, B-share market has no significant momentum or reversal phenomenon. 2. B-share market price efficient than A-share market. 3. Pool of investors does not affect the market price efficiency. 4.The period of non-financial crisis’s price efficient than the period of financial crisis in A-share market and the B-share market