A clutch of firms including Shearman & Sterling, Sullivan & Cromwell, Slaughter and May and Wachtell Lipton Rosen & Katz have advised on IntercontinentalExchange’s $11bn (£7bn) acquisition of NYSE Euronext.

The cash and stock deal, which creates a derivatives and cash markets exchange, had been delayed by almost a year because it was dependant on regulatory approval from several jurisdictions.