The figure is preliminary and it expects to publish a final number by the end of the week, allowing the deal to close in the next five business days.

Management at Deutsche Boerse has touted the acquisition announced in April as key to its future strategy, combining SimCorp's investment management software with Deutsche Boerse's data.

"The chemistry is right," Deutsche Boerse Chief Executive Officer Theodor Weimer told its investors in May.

(Reporting by Tom Sims, Editing by Friederike Heine)