The New York Stock Exchange slipped into the red in the three months to September 30 for the first time since 2001 due to an increase in legal expenses and weak trading volumes.

Despite a 0.6% uptick in revenues, the exchange posted a third quarter net loss of $1.6m (€1.2m) compared with a profit of $6.9m in the same period last year. Volumes remained flat at around 1.3bn shares traded daily.