Twitter shares will go on sale today with an increased price tag of 26 dollars per share.
The IPO will raise $1.8 billion dollars for the micro blogging site.
70 million shares will go on sale at New York Stock Exchange when it opens later.
Analysts suggest Twitter will bring in 500 million dollars in advertising revenue this year, and nearly $1 billion in 2014.
This IPO is the most eagerly awaited stock offering since Facebook.
The messaging service has 232 million users and has become a hugely popular tool for celebrities, journalists, political leaders and others.
Twitter has fast become engrained in popular culture but must still convince investors of its business model, having lost more than $440 million since 2010.
Memories of Facebook's botched offering will also abound when Wall Street starts trading.
Twitter gets most of its revenue from advertising in the form of "promoted tweets," but has only been doing this for about three years, and analysts say the the model is not fine-tuned.
