Trafigura's finance chief warns of trading house collapses; Fears that volatility will push capital requirements so high some smaller operators will fail Neil Hume and Harry Dempsey - FT The crisis in global energy markets will force some smaller commodity traders out of business and unleash a wave of consolidation in the sector, a senior executive at one of the world's largest trading houses has warned. Christophe Salmon, Trafigura's chief financial officer, said the spike in capital needed to keep commodities flowing around the world since Russia invaded Ukraine would squeeze smaller trading houses out of the market. /jlne.ws/3tygSTz