刘同学2020-01-12 23:49:39
刘同学If a securities market is efficient, it is most likely that: A Security prices would react only to the “unexpected” elements of information. B Investors would prefer active investment strategies to passive investment strategies. C The time frame for price adjustment allows many traders to earn profits with little risk. 不懂，
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Vicky2020-01-13 10:04:02
Vicky同学你好，
对于一个有效市场来说，价格已经反映了所有已经存在的信息，包括公开信息和内幕消息。
因此会引起价格波动的只有突发的未被预料到的信息。
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