Euronext Delays Open of Markets on Connectivity Fault

Euronext NV, operator of exchanges from Paris to Amsterdam, delayed the start of trading in cash markets and single-stock options by 30 minutes today due to a connectivity problem.

Markets opened at 9:30 a.m. Paris time after a technical fault disrupted the processing of data in the main trading venue for stocks from ING Groep NV to Sanofi. The halt affected cash markets for stocks, warrants and certificates, structured notes, bonds and exchange-traded funds, the exchanges operator said on its website. Single-stock options opened late as a result.

Euronext operates the main bourses in France, Portugal, Belgium and the Netherlands. Today’s glitch comes after Euronext parent Intercontinental Exchange Inc. began an initial public offering of the market operator on June 10, aiming to value the unit at as much as 1.75 billion euros ($2.4 billion).

As well as stocks, Euronext runs trading platforms for funds, warrants, certificates, corporate bonds, derivatives, commodities and indices.

Today’s glitch is not the first one for Euronext. A technical problem in March halted trading in its markets for more than an hour. In October 2011, malfunctions stopped the publication of some European indexes on two occasions in less than a week. Euronext suffered four breakdowns during June and July 2011.

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