基本的IPO問題 - 理財

有個很基本的問題一直不懂
當一個公司上市的時候
募資到的錢是什麼計算的?
然後跟市值得差別又是什麼
隨便挑個Twitter當例子

https://www.bloomberg.com/news/articles/2013-11-06/twitter-raises-1-82-billion-pricing-ipo-above-offering-range

Twitter Raises $1.82 Billion Pricing IPO Above Offer Range

The sale, the largest IPO by a technology company since Facebook Inc.’s
debut in May 2012, values the short-messaging website at $14.2 billion.
Twitter sold 70 million shares at $26 each, after offering them for $23 to $25

70M share * $26 = 1.82B

那市值$14.2B又是怎麼算出來的?
去查了一下現在Twitter大概有727M股在市場上
所以727M * 現在的股價15就是market cap 10 - 11B
那一開始上市新聞為什麼說的只有70M share?

謝謝!


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