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greater liquidity and efficiency provided by HFTs in normal times, and the disruptive consequences of their trading activity …
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This paper examines the behavior of financial markets efficiency during the recent financial market crisis. Using the … Hurst exponent as a criterion of market efficiency we show that level of market efficiency is different for pre-crisis and … crisis periods. We also classify financial markets of different countries by the level of their efficiency and reaffirm that …
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Today we live in a post-truth and highly digitalized era characterized by a flow of (mis-) information around the world. Identifying the impact of this information on stock markets and forecasting stock returns and volatilities has become a much more difficult task, perhaps almost impossible....
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