According to Google, Global Foundries is owned by Mubadala Investment Co. Then I found this article linking Mubadala to Rothschild & Co. It doesn't seem to involve semiconductors, so how it all connects, or if it even does, I don't know.  https://www.bloomberg.com/news/articles/2018-04-09/mubadala-is-said-to-near-hiring-rothschild-for-cepsa-stake-deal