The SWX Swiss Exchange is working to fix a technical problem that hit trading in international bonds on SWX as well as dealing in warrants and structured products on Scoach, its joint venture with Deutsche Börse.
In a short statement SWX says "certain trading segments of the SWX Swiss Exchange and Scoach Schweiz" were interrupted due to a "technical malfunction".
The cause of the problem is currently being analysed, says the exchange.
Trading in all other segments, such as shares and exchange traded funds, has not been affected.