Swiss stock exchange SWX said that it was merging with financial services firm SIS and financial information and payment group Telekurs.
The 10 member board of the new group, called Swiss Financial Market Services, will be headed by Peter Gomez, the current chairman of SWX, the companies said in a statement.
The merger, due to be completed by the beginning of 2008, follows "unanimous" approval from shareholders and SWX association members, it added.
No details of the transaction first announced in May were given.
The three companies' previous shareholders - mainly domestic and foreign financial institutions - will form the shareholder base for the new group, with no owner or banking group holding an absolute majority interest, the companies said. "Through this merger, our owners and users are strengthening the Swiss financial centre by providing a spectrum of financial market infrastructure and services that covers the entire value chain," said Stephan Zimmermann, chairman of Telekurs. "As a result, the new enterprise will be in an excellent position to press ahead with the expansion of its services both at home and abroad," he added. The three groups said in May that they were not planning any job cuts.