The company said the shuffle would improve efficiency by reducing management layers and streamlining processes. In particular, the company said it wants to improve profit margins at what is now called its consumer unit – which includes The Wall Street Journal print and online editions, financial news Web site MarketWatch, and Barron's. This division, by far Dow Jones' biggest after Mr. Zannino's reorganization, pulled in more than $1 billion in revenue last year but still lost money.