This paper analyzes brief episodes of high-intensity quotes turnover and revision-"bursts" in quotes-in the U.S. equity market. Such events occur very frequently, several hundred times a day for actively traded stocks. We find significant price impact associated with these market makers...

We examine the role of algorithmic traders as arbitrageurs and their impact on price efficiency in the interdealer foreign exchange market. Algorithmic traders do not improve price efficiency by detecting and exploiting mis-priced currency pairs. To the contrary, algorithmic traders contribute...

We relax the classical price-taking assumption and study the impact of orders of arbitrary size on price when the availability of liquidity is a concern in hedging. Our paper extends the earlier literature, suggesting that an environment with a permanent impact can be viewed as a special case...