this is the biggest ipo of the year right here at the new york stock exchange, big moment for this exchange. nyse prepped for this in anticipation of high demand for twitter shares. anyone buying in is buying in to an unprofitable company. the big question is, can twitter turn its popularity into profitability? >> i'm going to make history as the first president to live tweet. >> this movement was started on facebook and twitter and then took on a life of its own. >> people that i work with will not shut up about twitter. >> it's the most hyped tech ipo since facebook. twitter began trading here at the new york stock exchange instead of the nasdaq after facebook's famous flop there. >> the messy debut plagued by technical difficulties. >> but today, call it an about face, as mark zuckerberg and friends celebrate shares near record highs. twitter's financials aren't as