Jack Mallers announces IPO plans after JPMorgan closes his accounts [https://www.thestreet.com/.image/t_share/MjE1MjE4MDgzODk4MzM2NjIz/jack-mallers-bitcoin-preview.jpg] Jack Mallers announces IPO plans after JPMorgan closes his accounts After JPMorgan cut him off, Jack Mallers is taking his company public. [https://www.thestreet.com/crypto/markets/jpmorgans-jack-mallers-ipo-twenty-one-capital]