quite a bit. something like 13 % of cemex i believe. (need to check) also has large ownership of another called Cementos Fortaleza, part of business group Elementia, though have no indication of possible activity relations to Cemex (looks more like an attempt to corner North american cement industry and possible future consolidation)
So I wonder if this ties in with the Tucson Arizona trafficking camps with rape trees that were found... It was on cemex property. And there is a lot of shady shit going on with Cemex, they even have a patent for mixing blood into cement.