Chi-X, the alternative equity trading system that is rivalling Europe's traditional exchanges, has completed its expansion into Scandinavia with the launch of trading services for Danish and Norwegian stocks.

The London-based company introduced trading, clearing and settlement for five of the largest stocks of both the Oslo OBX 25 and OMX Copenhagen 20 indices. Chi-X plans to add the remainder of the indices' names by the end of the month, according to a statement.