Occidental Petroleum (OXY) is not just another oil company. It’s a heavyweight in fossil fuel production, chemicals, and carbon capture

Buffett strongly believes in concentrating Berkshire Hathaway's investment capital into his best ideas. Five top-tier companies, with clear competitive advantages and phenomenal capital-return programs,

Although the great investor Warren Buffett said that it's better to "learn from the other guys' mistakes" rather than make his own, the co-founder, chairman and CEO of Berkshire Hathaway has made