BY RUSSELL ADAMS

News Corp. named former Bloomberg LP chief executive Lex Fenwick as CEO of Wall Street Journal publisher Dow Jones & Co.

Mr. Fenwick, who helped build Bloomberg into a leading provider of data and tools for financial professionals, will now be in charge of a company that has struggled to increase its share of that market.

Dow Jones sells news, information and research to businesses through various units including Factiva, Dow Jones Newswires and Dow Jones VentureSource. Dow Jones generated an estimated $363 million in revenue from sales of financial ...