⁍ Trading on Euronext resumed on Tuesday after a series of glitches on Monday disrupted several of Western Europe’s major stock exchanges.

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⁍ The outage is at least the fifth major one globally this year.

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⁍ It is one of the most widespread as exchange operator Euronext hosts stocks exchanges from Dublin and Amsterdam to Paris and Lisbon.

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– Trading on several of Europe’s major stock exchanges was disrupted for more than three hours on Monday due to a technical failure affecting one of its data management systems. Trading in those locations came to standstill for more than three hours on Monday morning due to a technical failure impacting one of its data management systems. Though it was resolved in the afternoon, it came back during closing auctions. “There is a concentration risk given how these platforms host multiple bourses,” a market structure analyst at Rosenblatt tells Reuters. Euronext and Deutsche Boerse host several stock exchanges across Europe. Euronext operates six major stock exchanges in Europe. While trading of stocks can also be done on other platforms such as Cboe Europe, Aquis and Turquoise, they generally use Euronext as the reference market. The initial glitch caused one major liquidity provider to pull quotes from Euronext’s exchanges for the rest of the day, said an executive at the firm who was not authorized to speak publicly on the matter. The quotes were pulled because in order to account for the risk of continuing to trade on Euronext exchanges, the liquidity provider would have had to widen out its bid-ask spreads to a point where its prices would have been prohibitive to trade against, the person said. The issues encountered on Monday were not due to a problem in Euronext’s proprietary platform but “a bug in a third-party component,” the exchange operator said in a statement.