NYSE Euronext has posted a 33% drop in third-quarter profit and announced plans to eliminate 15% of its workforce in Europe over the coming year, as the transatlantic exchange group comes under increasing pressure from low-cost rivals.

NYSE Euronext said it is in talks to cut 200 jobs by the end of 2009, or about 15% of total European headcount, as part of a "restructuring" of its European operations aimed at improving efficiency and cutting fixed costs.