The service had 218.3 million monthly active users, on average, in the three months ended June 30. Three-quarters of its monthly active users are considered mobile users, it said in the filing.
Investors, though, could muster some cheer from Facebook's revenue and profitability track. The social networking site pulled in $272 million in revenue in 2008 but lost $55 million, according to Facebook's S-1 document. In 2009, it swung to a profit of $262 million after increasing its revenue nearly three-fold to $777 million. Facebook is now solidly profitable.
Twitter intends to list common stock under the symbol "TWTR," though it did not specify whether it intended to head for the New York Stock Exchange or the Nasdaq.
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Twitter, which went through a period of management turmoil and internal strife in its early years, did not append a letter from the founders to the filing, unlike Internet companies such as Facebook andGoogle before it.
But in a short message from "@twitter," the company outlined its mission as giving "everyone the power to create and share ideas and information instantly without barriers. Our business and revenue will always follow that mission in ways that improve-and do not detract from-a free and global conversation."
Co-founder and former CEO Evan Williams is Twitter's largest shareholder, with 12 percent of the shares, while co-founder and chairman Jack Dorsey owns 4.9 percent. Biz Williams, another co-founder, does not appear on the list of top shareholders. Current CEO Costolo owns 1.6 percent.
Among institutions, Benchmark and affiliated entities own 6.7 percent of shares, while Rizvi Traverse Management, Spark Capital, Union Square Ventures, and DST Global are each shareholders of 5 percent or more.
Suhail Rizvi, the little-known head of Rizvi Traverse who has helped himself and his investors amass stakes in Twitter since 2011, would count among the largest institutional shareholders, according to sources familiar with its investments.
Assuming everything goes smoothly, Twitter's IPO may re-start a consumer dotcom IPO train that stalled after Facebook's haphazard debut and subsequent steep share-price decline. But with markets near all-time highs and interest rates expected to stay low for some time, startups like AirBnB and Uber may be encouraged to seek public funding.
Goldman Sachs, Morgan Stanley, JPMorgan Chase, Bank of America/Merrill Lynch, Allen & Co, Deutsche Bank Securities, and Code Advisors are managing Twitter's IPO.