This paper studies the impact of contracted market makers by investigating the liquidity provider scheme in Sweden. The results show that the stocks become more liquid after the introduction of the contracted market makers. The liquidity improvement is explained by reduced order processing cost...

Market microstructure invariance (MMI) stipulates that trading costs of financial assets are driven by the volume and volatility of bets, that are, transactions intended to produce idiosyncratic gains based on investors’ beliefs. With futures transactions data, we estimate bet volume as the...

This study analyses two types of information flows in financial markets. The first type represents return information, where informed investors know whether the stock price will increase or decrease. The second type is labelled volatility information, where the direction of the stock price is...

We study performance and competition among high-frequency traders (HFTs). We construct measures of latency and find that differences in relative latency account for large differences in HFTs' trading performance. HFTs that improve their latency rank due to colocation upgrades see improved...