The Efficient Markets Hypothesis(EMH)is the focusing topic in the past 50 years of financial market researches.Many empirical studies are then provided that want to test EMH but have no consensus.The perception of EMH...
This paper investigates the semi-strong form of efficiency of Chinese stock markets in response to earnings forecast announcement by employing the methodology of event study. The sample period is from January 2009 to ...
supported by the National Natural Science Foundation of China (Grant Nos. 11573064, 11203069, 11333007, 11303101 and 11403100);the National Basic Research Program of China (973 program, 2013CBA01503);the NSFCCAS Joint Fund (U1631130); the CAS grant QYZDJSSW-SLH012;the Western Light of Chinese Academy of Sciences 2014;the Youth Innovation Promotion Association, CAS 2017;the Key Laboratory of Solar Activity (Grant KLSA201404);the NSFC-Guangdong Joint Fund (U1501501, nsfc2015460 and nsfc2015-463)
Kelvin-Hemholtz(K-H)instability in a coronal EUV jet is studied via 2.5D MHD numerical simulations.The jet results from magnetic reconnection due to the interaction of the newly emerging magnetic field and the pre-e...
Market efficiency is based on efficient market hypothesis (EMH). EMH claims that market totally contains the available information. In case of EMH, valid investors who take position will not gain abnormal profits. I...