Citi shuffles Cedric Pauwels to North America to lead prime, futures and securities service (PFSS) business.
CME Europe failed to win volumes, with traders preferring to access liquidity at its US exchanges instead.
The Merc will close CME Europe and CME Clearing Europe by years end.
The new platform is the latest effort from Mizuho as expands its European interest rate derivatives capabilities.
The move could radically shake up the hold of traditional bank players in European market making.
Buy-side companies with less regulatory constraints could see a greater role in market making.
Last month EU and US regulators reached a landmark agreement on cross-border supervision of clearing houses.
The launch of CurveGlobal could significantly open up competition in the European interest rate futures market.
European stock exchanges have announced positive levels of growth Q3.