Berkshire Hathaway, Occidental Petroleum and Buffett

Diamondback Energy and Occidental Petroleum are leading producers in the Permian Basin. Diamondback Energy is a pure play on ...
Warren Buffett's company, Berkshire Hathaway (NYSE: BRK.A)(NYSE: BRK.B), can't seem to get enough of Occidental Petroleum (NYSE: OXY). The conglomerate recently purchased another 8.9 million ...