http://www.newsweek.com/nas-kevin-durant-coinbase-cryptocurrency-investment-1583758 > Cryptocurrency trading platform Coinbase had a hugely successful debut on the Nasdaq stock exchange after going public Wednesday, resulting in a likely windfall for early investors such as basketball star Kevin Durant and rapper Nas. > Coinbase shares closed at $328 after its first day of trading, giving the company a valuation of more than $85 billion.