Warren Buffett, CEO of Berkshire Hathaway, acquired PacifiCorp, a Western US energy company, through Berkshire's subsidiary MidAmerica Energy Holdings. Buffett focuses on acquiring low-cost companies and increasing shareholder wealth. He was trained by Benjamin Graham and seeks undervalued stocks. While the PacifiCorp acquisition offers lower annual returns than Buffett prefers, it fits Berkshire's strategy of investing in stable, profitable industries like utilities to achieve long-term growth. The all-cash purchase price of $9.4 billion reflected PacifiCorp's current market value.