New York—Dow Jones & Co., publisher of The Wall Street Journal
, said that it has entered into an agreement to buy eFinancialNews Holdings, a private company based in London, for $51.9 million. eFinancialNews Holdings publishes the weekly Financial News and eFinancialNews.com, a subscription-based Web site. It also publishes Private Equity, a weekly magazine that covers the European private equity sector and offers training and events for the investment banking, asset management, private equity and trading sectors. The transaction is expected to close in the second quarter.