This paper analyzes the Italian segment of the Eurozone money market since the start of the European Monetary Union. Some relevant variables are analyzed at different frequencies (intramonth, intraweek and intraday): both level and volatility of the overnight interest rate, volume exchanged in...

We show that (electronic) designated market makers are not necessarily beneficial to the stock market during ash crashes. They actually consume liquidity when it is most needed, even if they are rewarded by the exchange to provide immediacy. This behavior exacerbates the transient price impact,...

We show that the Truncated Realized Variance (TRV) of a semimartingale asset price converges to zero when observations are contaminated by microstructure noises. Under the additive iid noise assumption, a central limit theorem is also proved. In consequence it is possible to construct a feasible...