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Twitter accused of ruse to pump up share price (Update)

Two financial firms sued Twitter on Wednesday, saying it supported their own world tour to sell its shares last year, only to disallow the sales in a ruse aimed at boosting the company's valuation above $10 billion for an ...

Facebook's 'mobile first' strategy pays off on Wall Street

Just one year ago, the world's largest social network was in Wall Street's doghouse. Facebook Inc.'s highly touted stock market debut had fizzled, and the company's share price was spiraling lower and lower, as critics charged ...

Dell panel warns of 'risk' if buyout plan fails

The special committee set up by Dell to evaluate options for the troubled computer giant warned Friday of "substantial downside risk" if shareholders reject a buyout plan led by founder Michael Dell.

BlackBerry posts surprise loss, shares plunge

Canadian smartphone maker BlackBerry on Friday posted an unexpected first quarter loss and disappointing sales figures for its new phones, sending its share price tumbling in early trading.

White House joins Instagram, posts Africa departure

The White House added Instagram to its social media portfolio on Wednesday, as it posted a picture of a helicopter with President Barack Obama and his family taking off on a trip to Africa.

SEC warns of rise in risky email stock schemes

US market regulators warned Wednesday of a rise in spam email and social media-based stock promotions that are actually "pump and dump" schemes aimed at cheating small investors.

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