Tech-focused investment companies SoftBank and Ark Invest are among the firms in early stage talks to invest in Tether, issuer of the world's largest stablecoin USDT (USDT), Bloomberg reported on Friday. The report follows this week's news about Tether looking to raise up to $20 billion in a fundraising round that would value the firm at around$500 billion, which would make it one of the world's most valuable private companies. The fundraising and the hefty valuation underscores the red-hot stablecoin t ...