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SOE: Fachverband Physik sozio-ökonomischer Systeme

SOE 3: Financial Markets, Risk Management and Stochastic Processes

SOE 3.1: Vortrag

Montag, 16. März 2020, 11:15–11:30, GÖR 226

Grasping asymmetric information in price impacts — •Shanshan Wang¹, Sebastian Neusüß², and Thomas Guhr¹ — ¹Fakultät für Physik, Universität Duisburg–Essen, Lotharstraße 1, 47048 Duisburg, Germany — ²Deutsche Börse AG, Frankfurt, Germany

The price impact for a single trade is estimated by the immediate response on an event time scale, i.e., the immediate change of midpoint prices before and after a trade. We work out the price impacts across a correlated financial market. We then quantify the asymmetries of the distributions and of the market structures of cross-impacts, and find that the impacts across the market are asymmetric and non-random. Using spectral statistics and Shannon entropy, we visualize the asymmetric information in price impacts. Also, we introduce an entropy of impacts to estimate the randomness between stocks. We show that the useful information is encoded in the impacts corresponding to small entropy. The stocks with large number of trades are more likely to impact others, while the less traded stocks have higher probability to be impacted by others.