By Jonathan Stempel (Reuters) – Warren Buffett’s Berkshire Hathaway Inc has resumed its purchases of Occidental Petroleum Corp shares after a five-month hiatus, increasing its stake in the oil company …
By Jonathan Stempel (Reuters) – Warren Buffett’s Berkshire Hathaway Inc has resumed its purchases of Occidental Petroleum Corp shares after a five-month hiatus, increasing its stake in the oil company …