Hallo Katrin,


der eigentliche, vollständige Begriff für "screen trade" ist Screen-based trading system (SBTS):
http://academy.moneymantrastock.com/what-is-screen-based-tra...


"The Important Features of SBTS:
A member can punch into the computer quantities of securities and the prices at which he likes to transact and the transaction is executed as soon as it finds a matching order from a counter party. SBTS electronically matches orders on a strict price/time priority."
http://www.businessmanagementideas.com/stock-exchange/tradin...


"Im Gegensatz zum Parketthandel ist [hier] keine visuelle Interaktion und Kommunikation zwischen den Handelsteilnehmern nötig. Das elektronische Handelssystem führt Transaktionen von Wertpapieren, Währungen oder Waren automatisch aus, wenn passende Kauf- und Verkaufangebote vorliegen."
https://de.wikipedia.org/wiki/Elektronisches_Handelssystem


"Screen-based trading is believed to improve market efficiency and there is a trend to electronic trading in all markets. Bid-ask spreads are typically used as the measure of trading costs and have been used as efficiency measures to compare a computerized trading system with the traditional floor-based trading system."
(erster Satz unter 2. "Literature review")
https://www.researchgate.net/publication/252181830_Screen_ba...


Viele Grüße
Michael