What is "stemcor"

STEMCOR - Steel Marketing Corporation, is a British steel trading company. The company is based in London, England, and has 145 business units in 45 countries around the world, employing more than 2000 people.

Stemcor is the world’s largest independent steel trader. In 2009 the company was ranked as the third largest privately owned company by turnover in the United Kingdom by The Sunday Times' Top Track 100 list. The company does not own any steel producers, and the majority of the shares are held by the Oppenheimer family.