Buffett's increase in holdings in Western Oil has become the largest shareholder. What is the attractiveness of Western Oil? DBS Bank's Deng Zhijian believes that Western Oil is one of the most comprehensive energy companies in the United States. According to financial report analysis, it is expected to generate a profit of 3.4 billion yuan next year and return to 4.4 billion yuan by 2025. Buffett's reason for increasing his holdings is mainly due to his high cash flow return rate of 11%. And the average cost is about $58 per share. Another aspect is understanding of the industry.