Gunvor,, which was founded in 1997, is the fourth largest crude oil trader in the world after Glencore, Vitol, and Trafigura, and is controlled by Gennady Timchenko and Torbjörn Törnqvist.
http://en.wikipedia.org/wiki/Gunvor_%28company%29
Glencore http://en.wikipedia.org/wiki/Glencore...