Twitter Inc.’s IPO matched its hype. The micro-blogging site raised $1.82 billion by selling 70 million shares on Nov. 6 in the year’s most highly anticipated IPO. The next day, investors bid its stock up to as high as $50 a share on the New York Stock Exchange. Twitter closed its inaugural day of trading at $44.90, giving it a market capitalization of $31 billion.

Twitter’s debut confirmed its place among the new Internet elite. The company fared far better in its IPO than social networking site Facebook Inc. did two years ago when it went public. Google Inc. jumped a comparatively modest 18 percent when it went public in August 2004.