There is a big controversy about the consequences of High-Frequency Traders (HFTs) activity on market quality. This empirical study uses a unique data set provided by the French regulator "Autorité des Marchés Financiers" and gives some evidence concerning the practices of these members under...

This empirical study uses a unique recent data set provided by the French regulator "Autorité des Marchés Financiers" and gives some evidence concerning the impact of aggressive orders on the price formation process and the information content of these orders according to the different order...

In this paper, we use a database of around 400,000 metaorders issued by investors and electronically traded on European markets in 2010 in order to study market impact at different scales.At the intraday scale we confirm a square root temporary impact in the daily participation, and we shed...

Key Features:Interdisciplinary comments on market microstructure (covering economy, quantitative finance, and econophysics)Covers a very large spectrum of phenomenon: high frequency trading, liquidity monitoring, the Flash Crash, systemic risk, fragmentation, Smart Order Routing, trade...

Market fragmentation : monitoring and history -- Smart order routing -- Tick size; -- Information seeking and price discovery -- Dark pools and broker crossing networks -- Liquidity : the viewpoint of trading venues -- The agenda of high frequency traders -- The link between fragmentation and...