Based on the results of theoretical studies of the author as Glosten and Harris, Stoll, Kim and Ogden, ... about the behavior of investors active in the market there exists any factor balance information, this essay has conducted reviews of the level of real symmetric information on two securities trading floor. HCMC and Hanoi and concludes that this level is quite high in the floor of HO CHI MINH CITY. HCM (67%) and very high in floor Hanoi (90%), based on data collected by 2011.
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