Updated from 6:12 P.M. to include ownership stakes.
NEW YORK (TheStreet) -- Twitter has filed its S-1 with the Securities and Exchange Commission, announcing its plans to go public.
The San Francisco-based microblogging site led by CEO Dick Costolo, could raise up to $1 billion, a number that for now, is just a placeholder used to calculate fees.
According to the filing, Twitter's revenue in 2012 totaled $316.9 million. The company's revenue for the first six months of 2013 totaled $253.6 million, the filing said.The U.S. still accounts for much of Twitter's revenue, as international revenue for 2012 was only $53 million. For the first six months of 2013, international revenue was $62.8 million, accounting for 25% of total revenue during that time frame. The social network noted that it recently focused on international spending in certain countries, including Australia, Brazil, Canada, Japan and the United Kingdom. Twitter noted that revenue grew by 198% from 2011 to 2012, while net loss decreased by 38% to $79.4 million. During that same time frame, adjusted EBITDA increased by 149% to $21.2 million. From the first six months of 2012 to the first six months of 2013, revenue increased 107%, and adjusted EBITDA increased by $20.7 million to $21.4 million. The company's net loss increased by 41% to $69.3 million. The majority of Twitter's revenue, 87% for the six months ended June 30, comes from advertising in the form of three Promoted Products: Promoted Tweets, Promoted Accounts and Promoted Trends. Twitter noted that 85% of its fiscal 2012 revenue was derived from advertising. The rest of the revenue is derived from the company's data licensing arrangements. On a diluted basis, the company lost 68 cents per share for fiscal 2012. In the first six months of 2013, it lost 53 cents per share. Twitter said in the filing it had 218.3 million monthly active users (MAUs) as of the end of the June quarter. Of those MAUs, 49.2 million come from the United States and 169.1 million average MAUs from the rest of the world. It also said it had more than 100 million daily active users, spanning nearly every country. However, Twitter noted that it does have some fake or spam users, though it's a relatively small amount, accounting for less than 5% of its monthly active users, per an internal review of a sample of accounts. "Our users include millions of people from around the world, as well as influential individuals and organizations, such as world leaders, government officials, celebrities, athletes, journalists, sports teams, media outlets and brands," the company said in the filing. "Our users create approximately 500 million Tweets every day." Twitter noted that mobile "has become the primary driver of our business," with 75% of its MAUs accessing the platform from a mobile device for the three months ended June 30. Over 65% of the company's advertising revenue was generated from revenue. "We expect that the proportion of active users on, and advertising revenue generated from, mobile devices, will continue to grow in the near term," the company noted in the filing. The company set off a media frenzy in September when it tweeted that it had confidentially filed its S-1 to begin the initial public offering process. We've confidentially submitted an S-1 to the SEC for a planned IPO. This Tweet does not constitute an offer of any securities for sale. -- Twitter (@twitter) September 12, 2013 This pales in contrast with Facebook (FB - Get Report), which raised over $16 billion when it went public in mid-2012, becoming the largest tech IPO in U.S. history. Twitter has not yet said where it will list its offering, though sources close to the situation told TheStreet the company will list on the New York Stock Exchange, TheStreet reported in late September. The company's ticker symbol will be "TWTR," which pays homage to Twitter co-founder Jack Dorsey's first tweet, "Just setting up my twttr". Dorsey is one of Twitter's largest shareholders, owning 23.4 million shares, or 4.9% of the company. Evan Williams, who co-founded the company along with Dorsey and Biz Stone, owns the most shares, with 12% or 56.9 million shares. CEO Costolo owns 7.6 million shares. Other large shareholders include private equity firms Rizvi Traverse, Spark Capital, Benchmark Capital Partners, Union Square Ventures, and DST Global, who are all listed as being 5% stockholders, but exact amounts are not given. --Written by Chris Ciaccia in New York --Contact by Email. Follow @Chris_Ciaccia