上市be listed; 　　發行issue; 　　股票share; 　　股市stock market; 　　股東shareholder; 　　創始人founder; 　　投資人investor; 　　投資銀行investment bank; 　　股票承銷商underwriter; 　　IPO首次公開發行股票Initial Public Offering. 　　Being the worlds largest social networking group，Facebook is valued at $104bn in an initial public offering.