The Swiss clearing house, which last week merged with the country's stock exchange, has signed its second agreement with a European rival in 18 months, as it revealed that the initial deadline for its link-up with the London Stock Exchange, its first alliance, has lapsed.

SIS x-clear, the clearing house of the Swiss exchange group, has agreed with its German rival Eurex Clearing to provide mutual access to the trades coming out of their respective stock markets.