Coinbase reports Q2 revenue up 3% YoY to $1.5B, vs. $1.6B est., and retail trading volume up 16% to $43B, vs. $48.05B est.; COIN drops 9%+ after hours (Tanaya Macheel/CNBC)

Tanaya Macheel / CNBC: Coinbase reports Q2 revenue up 3% YoY to $1.5B, vs. $1.6B est., and retail trading volume up 16% to $43B, vs. $48.05B est.; COIN drops 9%+ after hours  —  Coinbase shares fell Thursday after gains in the cryptocurrency exchange's subscription revenue failed to offset weaker trading volumes.