We study empirically the trading activity in the electronic on-book segment and in the dealership off-book segment of the London Stock Exchange, investigating separately the trading of active market members and of other market participants who are non-members. We find that (i) the volume distribution of off-book transactions has a significantly fatter tail than that of on-book transactions, (ii) groups of members and non-members can be classified in categories according to their trading profile, (iii) there is a strong anticorrelation between the daily inventory variation of a market member due to on-book market transactions and an inventory variation due to off-book market transactions with non-members, and (iv) the autocorrelation of the sign of the orders of non-members in the off-book market is slowly decaying. We also analyse the on-book price impact function over time, both for positive and negative lags, of the electronic trades and of the off-book trades. The unconditional impact curves are very different for the electronic trades and the off-book trades. Moreover, there is a small dependence of the impact on the volume for the on-book electronic trades, while the shape and magnitude of the impact function of off-book transactions strongly depend on volume.
|Data di pubblicazione:||2012|
|Titolo:||Trading activity and price impact in parallel markets: SETS vs. off-book market at the London Stock Exchange|
|Citazione:||Carollo, A., Vaglica, G., Lillo, F., & Mantegna, R. (2012). Trading activity and price impact in parallel markets: SETS vs. off-book market at the London Stock Exchange. QUANTITATIVE FINANCE, 12(4), 517-530.|
|Digital Object Identifier (DOI):||10.1080/14697688.2012.664910|
|Settore Scientifico Disciplinare:||Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)|
Settore SECS-S/06 -Metodi Mat. dell'Economia e d. Scienze Attuariali e Finanz.
|Appare nelle tipologie:||1.13 Abstract in rivista|