In this paper we examine the effectiveness of modeling a paris-traded ETF portfolio as an Ornstein-Uhlenbeck process. Using ETF pairs that have similar references indexes, we apply maximum likelihood estimation to historical data in order to optimize trading signals for two strategies. Using...

We find that Robinhood ownership changes are unrelated with future returns, suggesting that zero-commission investors behave as noise traders. We exploit Robinhood platform outages to identify the causal effects of commission-free traders on financial markets. Exogenous negative shocks to...

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...

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...