London Stock Exchange (LSE) shareholders voted almost unanimously to approve a proposed merger with Deutsche Boerse on Monday, paving the way to bring Britain's FTSE 100, Germany's DAX and the Euro Stoxx 50 index under one roof.
Valued at an estimated 20 billion pounds (27 billion dollars), the merger was approved by 99.89 per cent of single votes and 99.92 per cent of votes by share value, comfortably passing the required minimum of 75 per cent of shares by value.
The deal remains subject to approval by regulators and by Deutsche Boerse shareholders.
German media had speculated that the approval of the London exchange's shareholders could have been affected by Britain's recent vote to leave the European Union, despite reassurances by the two companies.
"In light of the developments following the UK referendum, the parties emphasize that the agreed transaction includes all necessary mechanisms to respond to the outcome of the referendum," the London Stock Exchange Group said following Monday's vote.
A joint "referendum committee" will make recommendations to ensure the merged company will "meet all regulatory requirements to secure closing of the transaction and achieve its commercial objectives," the LSE Group said in a statement.
"I strongly endorse the statement of London Stock Exchange Group following their general meeting today and continue to recommend the transaction to the shareholders of Deutsche Boerse," Joachim Faber, chairman of the German company, said in the statement.
The merged trading behemoth would rival the largest stock exchange groups in the world, including CME Group and the Hong Kong Stock Exchanges and Clearing.