Euronext logo at the headquarters in La défense business district, near Paris, France.
Trading on several major European exchanges was halted for more than two hours on Monday, due to a glitch at the region’s biggest stock exchange operator.
Euronext sent a tweet around 10:22 a.m. CET (4:22 a.m. ET) that trading in all of its ENX, +1.22% products had been halted. At 12:30 p.m. CET (6:30 a.m. ET), the operator tweeted that the problem had largely been corrected.
“The route cause has been identified and resolved. It was a technical issue impacting the middleware system. Euronext is preparing for a resumption of all markets, but the Warrents and Certificates one for which investigations continue,” the exchange operator said on Twitter TWTR, -0.47%.
Among the indexes affected was the French CAC 40 PX1, +0.27%, which had been frozen with a gain of 0.8%. When trading resumed at 12:45 p.m. CET, the index was up just 0.2%.
The outage notably would have affected investors of two big companies that reported on Monday — food giant Danone BN, +1.12% and Dutch health technology group Royal Philips PHIA, +3.27%. Danone shares resumed trading with a 1.3% rise and Philips with a gain of 3%.
Euronext operates exchanges in Brussels, Dublin, Lisbon, London, Milan and Oslo as well. It recently agreed to buy Borsa Italian from the London Stock Exchange LSE, +0.06% for €4.3 billion ($5 billion).
Earlier this month, Tokyo’s trading bourse was halted for an entire day due to a system failure. It marked the worst-ever failure for the Japanese exchange, which said on Monday it would draw up a fresh plan on how to restart trading should a similar event occur, according to Reuters.
Monday also marks the 33rd anniversary of “Black Monday,” one of the worst trading days in history. On October 19, 1987, the Dow DJIA, +0.39% and S&P 500 SPX, +0.01% both lost more than 20% in a single session, which was blamed on unsettling financial developments, plus the rise of computer trading.