Transactions were halted Monday on the Paris Stock Exchange shortly after opening, its operator Euronext claiming to suffer a "technical problem".
"We are working to resolve this problem," said the stock market operator in a tweet Monday, who also wrote that the blocking affected all the products it offers.
In addition to the Paris Stock Exchange, the operator manages the Brussels, Amsterdam, Lisbon, Dublin and Oslo stock exchanges.
The flagship Parisian CAC 40 index was up 0.82% to 4,976.15 points before the interruption of trading around 10am.
They hadn't picked up again an hour later.
This technical failure comes a few days after a major blackout on the Tokyo Stock Exchange at the beginning of October, one of the most serious incidents in the history of the Japanese market.
Euronext confirmed in early October that it would acquire the Milan Stock Exchange from the London Stock Exchange for the sum of 4.33 billion euros.
© 2020 AFP