While Rupert Murdoch's News Corp. was trying to win over the Bancroft family in the second quarter, Omaha billionaire Warren Buffett's Berkshire Hathaway Inc. bought a small stake in Dow Jones & Co.

Berkshire's ownership is surprising because Buffett, the company's chairman, had made his concerns about the newspaper industry known publicly in the past few years. Buffett's main concerns stem from the challenges the industry faces as the Internet and other technologies become increasingly popular.

As of June 30, Berkshire owned 2.78 million Dow Jones shares, valued at $159.8 million, according to a second quarter securities filing. About 85.85 million shares of Dow Jones is outstanding, making Berkshire's stake just over 3 percent, according to a Wall Street Journal article.

Berkshire did not request confidential filing status for disclosure of the stake, Marc Hamburg told the Wall Street Journal. This means means the company bought the shares between the end of March and the end of June. Hamburg did not disclose how much Berkshire bought the shares for, the Journal stated.