Trading in Euronext stock exchanges continued at 13.45 Finnish time and derivatives at 13.50.
Trading on Euronext exchanges was suspended due to a technical failure.
This is the company's worst failure in two years.
The problem suspended trading on the stock exchanges in Brussels, Paris, Dublin, Amsterdam and Lisbon operated by Euronext.
In contrast, Euronext's Oslo Stock Exchange was not affected by the failure.