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Twitter’s Filing for I.P.O.

Twitter set the price of its initial public offering at $26 a share, valuing the company at $18.1 billion. Related Article »
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Twitter, a Risky Investment

Twitter will begin trading on the New York Stock Exchange on Thursday. Here are three reasons the company may be a risky investment.

From Netscape to Twitter

Some Internet companies have become global behemoths. Others have traced the trajectories of shooting stars — going from concept to scrap heap in only a few years.

Measuring a Tweet’s Worth

Twitter’s revenue has steadily grown since 2011 to more than $120 million in the second quarter. But the microblogging site has yet to turn a profit.