Coinbase hit a $90 billion valuation in the private auction market before it goes public later this month, report says snagarajan@businessinsider.com (Shalini Nagarajan) Coinbase hit a $90 billion valuation in its last private auction market, Bloomberg reported. The valuation is based on the $350 per share at which its stock was trading on the Nasdaq Private Market. The crypto exchange is set to go public later in March on the NASDAQ under the ticker COIN. Shares in Coinbase hit a valuation of $90 billion in a private auction market before the cryptocurrency exchange is goes ...