The seven investment banks participated in a cartel through a group of traders working on their EGB desks and operating in a closed circle of trust. These traders were in regular contact with each other mainly in multilateral chatrooms on Bloomberg terminals.
In these chatrooms, the relevant traders exchanged commercially sensitive information. They informed and updated each other on their prices and volumes offered in the run-up to the auctions and the prices shown to their customers or to the market in general.
They discussed and provided each other with recurring updates on their bidding strategy in the run-up to the auctions of the Eurozone Member States when issuing Euro-denominated bonds on the primary market, and on trading parameters on the secondary market.
The behaviour of the seven banks violates EU rules that prohibit anticompetitive business practices such as collusion on prices (Article 101 of the Treaty on the Functioning of the European Union and Article 53 of the EEA Agreement). The conduct took place between 2007 and 2011.