Petroleumworld.com - The hedge fund of billionaire investor George Soros increased its stake in Brazilian state-run oil company Petroleo Brasileiro ( Petrobras) to 21.1 million American Depositary Receipts as of Sept. 30 from 11.5 million at June 30.
Soros Fund Management LLC made the move as the ADRs tumbled during the quarter to about $44 from […]

