An Indian lawmaker has filed a complaint with the government claiming that Walmart illegally invested in a local supermarket chain in violation of rules restricting direct foreign investment in the retail industry. Regulators have begun an informal inquiry into the matter, according to an article in Friday's New York Times.

Consumers' growing love of mobile devices has created growing difficulties for technology companies as they seek to reach their audiences through advertising on smartphones and tablets.

Waltham, Massachusetts-based electric car battery manufacturer A123 Systems Inc. filed for Chapter 11 bankruptcy protection Tuesday, The Wall Street Journal reported. The company's collapse has been called a setback for the Obama administration's efforts to foster a domestic market for electric vehicles running on U.S.-built batteries.

Citigroup Inc. announced on Tuesday that CEO Vikram Pandit, 55, who has held the post since the eve of the financial crisis in 2008, is stepping down.

In the ultimate David and Goliath story, the China Petroleum & Chemical Corp., Sinopec, Asia's largest refiner and one of China's biggest state-owned firms, dropped its hostile bid to take over the much smaller, privately-held China Gas Holdings after a contentious struggle lasting nearly a year, according to major media stories.

The Wall Street Journal has recognized the world's hottest new innovations with its annual Technology Innovation Awards, highlighted in today's paper. Culled from 536 applications originating in two dozen countries, the 37 winners and runners up span 18 categories and include start-ups as well as larger, more established companies.

In the latest coup for what was an early Internet sensation when it the scene in the mid-nineties but has more recently been waning, Yahoo Inc. has recruited a top advertising sales executive from its rival Google, Vice President Henrique de Castro, as its new Chief Operating Officer. Mr. de Castro will take the reins from another Google veteran Marissa Mayer who has been CEO and President at Yahoo since July.

Private equity plays a pervasive role in all of our lives,whether we are aware of it or not. In "The New Tycoons," author Jason Kelly tells the stories of the men who created this trillion-dollar industry.

A recently released study by Dow Jones finds that venture capital-backed companies with female executives are more successful than those with only men in senior executive roles.

Millennial Media, a six-year old independent company ranked No. 2 last year in mobile advertising sales in the United States, Reuters reported today. Its customers included 75 of the top 100 Ad Age advertisers.