Sigma Broking, one of eight members of the London Metal Exchange allowed to trade on the open-outcry floor, is trying to sell ...

LONDON (Reuters) -Sigma Broking, one of eight members of the London Metal Exchange allowed ... the British arm of U.S. broker Clear Street joined as a Category 1, or floor trading, member.

LONDON (Reuters) - Sigma Broking, one of eight members of the London Metal Exchange allowed ... the British arm of U.S. broker Clear Street joined as a Category 1, or floor trading, member.

LONDON (Reuters) -Sigma Broking, one of eight members of the London Metal Exchange allowed to trade on ... in December when the British arm of U.S. broker Clear Street joined as a Category 1, or floor ...