level of market uncertainty and the degree of algorithmic versus human trading. Our results show that liquidity increases … initially as AT rises to about 10% share of the market; beyond this point, liquidity increases only marginally. Statistical …

-post and ex-ante types), of cancellation fees and of transaction taxes on asset price volatility and on the occurrence and … volatility and the frequency of flash crashes. However, these policies also imply a longer duration of flash crashes. Furthermore …, the introduction of an ex-ante circuit breaker markedly reduces price volatility and removes flash crashes. In contrast …

of linear autocorrelation, volatility clustering), trading volumes (volume clustering, correlation between volume and … volatility), and timing of trades (number of price changes, autocorrelation of durations between subsequent trades, heavy tail in …

volatility, but liquidity was reduced; (2) liquidity deterioration affected more the sell than the buy side of the LOB; (3) high …-frequency activity (HFT) diminished during SSR, reinforcing volatility; (4) negative effects on liquidity and HFT diminished and … disappeared as the ban was lifted; (5) HFT unidirectionally Granger causes 1 min realized volatility while the natural logarithm …

dynamics. Our main goal is to investigate whether high-frequency trading exacerbates market volatility and generates flash … that the presence of high-frequency trading increases market volatility and plays a fundamental role in the generation of …

This contribution addresses the impact of high-frequency electronic liquidity provision strategies on financial markets …

HFT, the actual knowledge on how they affect liquidity, prices, and market structure is still limited - especially if they … direction to what some of the goals that market regulators try to reach - transparency and increase of market liquidity …

security is added, the liquidity of the non-market asset is still a decreasing function of volatility and an increasing …Garbade and Silber (1979) demonstrate that an asset will be liquid if it has (1) low price volatility and (2) a large … number of public investors who trade it. Although these results match nicely with common notions of liquidity, one key …