https://www.coindesk.com/crypto-unicorn-bitmain-weighs-18-billion-ipo-one-of-worlds-largest/ According to documents obtained by CoinDesk, the cryptocurrency mining company is filing for an initial public offering (IPO) potentially as high as $18 billion this September at a market capitalization of $40 to $50 billion. It will be underwritten by China International Capital Corporation and listed on the Hong Kong Stock Exchange in Q4 2018 or Q1 2019 amid a wave of Chinese unicorns hitting the public markets, including bitcoin mining competitors Canaan Creative and Ebang Communication. One of the most valuable cryptocurrency companies, Bitmain closed a $1 billion pre-IPO financing round on July 23 at a $15 billion valuation, nearly two times cryptocurrency exchange Coinbase's $8 billion valuation, reported in April.