Euronext is offering eight weeks' free trading and a three-eurocent credit for every active order in Dutch securities in the latest round of an escalating price war with the London Stock Exchange. The May 24 start date also coincides with the London exchange's own launch of a trading system designed to take market share from Euronext.

Euronext is waiving the 30 eurocent charge on active orders in Dutch securities. The free offer and rebate will run to the end of July.