Shareholders within the London exchange ar as a result of vote on a planned merger with its German counterpart Deutsche Boerse.
The two united a $27bn (£20bn) deal earlier this year however the Brexit vote has raised questions on however it ought to be enforced.Both firms have aforementioned the end result doesn't have an effect on the logic of the deal.
However Germany's regulator, Bafin, aforementioned the headquarters couldn't be in London, as had been planned.
"Without doubt... it's laborious to imagine that the foremost necessary exchange venue within the eurozone would be steered from a headquarters outside the EU," aforementioned Felix Hufeld, Bafin's president.
"There definitely has got to be associate adjustment here."
It doesn't have a veto on the deal however it's thought that Deutsche Boerse is probably going to require its issues seriously.
In a joint statement discharged shortly once the UK's vote the businesses aforementioned the end result failed to have an effect on "the compelling explanation of the merger".
In fact, the pinnacle of the Deutsche Boerse Joseph Joachim Faber aforementioned the choice created it "ever additional necessary to keep up and foster ties between the united kingdom and Europe".
The deal still has to be approved by regulators and, in step with Reuters agency, any major changes to that may need more shareowner approval.
As it stands, the deal is anticipated to be approved anon weekday with German shareholders as a result of vote on that on twelve July.
The companies hope to complete the deal in early 2017.