Seminar: “A high frequency analysis of the information content of trading volume,” Khaladdin Rzayev (The University of Edinburgh), Ümit Berkman Seminar Room (MA-330), 1:40PM February 22 (EN)

Date: 22 February 2019, Friday
Time: 13:40-14:40
Place: Faculty of Business Administration,
Ümit Berkman Seminar Room (MA-330)

“A high frequency analysis of the information content of trading volume”
Khaladdin Rzayev
The University of Edinburgh

We propose a state space modelling approach for decomposing high frequency trading volume into liquidity-driven and information-driven components. Based on a set of high frequency S&P 500 stocks data, we show that informed trading increases pricing efficiency by reducing volatility, illiquidity and toxicity/adverse selection during periods of non-aggressive trading. We observe that our estimated informed trading component of volume is a statistically significant predictor for one-second stock returns; however, it is not a significant predictor for one-minute stock returns. This disparity is explained by high frequency trading activity, which leads to the elimination of pricing inefficiencies at high frequencies.
JEL Classification: G12; G14; G15

Keywords: trading volume; expected component; unexpected component; volatility; liquidity;
market toxicity, unobserved components time series models; high-frequency data.