Carnegie, the Swedish investment bank whose chief executive was ordered to leave following a regulatory probe into a trading scandal, was this morning facing a fresh fine in its home market after stock exchange operator OMX said it was imposing penalties on the bank's derivatives operations.

OMX confirmed that Carnegie has been handed a new Skr5m fine (€533,000), after certain members of the bank "manipulated market prices [in order] to conceal intentional [and] incorrect valuations previously undertaken within the Bank's derivative trading portfolio, towards the end of 2006".