OneChicago, the consortium-owned US single stock futures (SSF) exchange, has increased its lead over troubled rival, the Liffe-owned NQLX.

During the final quarter of 2003, OneChicago volumes outpaced those on NQLX by almost 30% and in December, OneChicago's most successful month on record, volumes reached 342,227, over four times NQLX's total of 72,893.