The Order Machine, a Netherlands-based options trading venue part owned by Nasdaq OMX, has maintained its market share in Dutch index options, despite a legal challenge from NYSE Euronext.

TOM chief executive Willem Meijer is also targeting an expansion in Europe next year to offer other options contracts after an investment by Nasdaq OMX. The transatlantic exchange bought a 25% stake in TOM in December in a deal that included an option for it to increase its holding to 50.1%.