Key Points Ukraine has started attacking Russian oil and refining assets with more aggressiveness. The change in the dynamic of the war caused oil prices to rise, Occidental and other U.S.-based oil companies rallied in response, given their domestic status. 10 stocks we like better than Occidental Petroleum › Shares of Occidental Petroleum (NYSE: OXY) rallied 5% on Tuesday as oil prices rose. One of Warren Buffett's two favorite oil companies along with Chevron (NYSE: CVX), Occidental was risin ...