Coinbase said its profit surged in the second quarter, fueled by gains in its investments including crypto company Circle Internet Group. But the crypto exchange’s revenue fell short of expectations, and its stock was down 6% in after-hours trading.

Coinbase Global reported a sharp rise in second-quarter profit on Thursday, as gains in its subscription and services business offset a dip in trading revenue.

Coinbase shares fell Thursday after the cryptocurrency exchange's subscription revenue failed to offset weaker trading volumes. In the quarter ended June 30, Coinbase earned $1.43 billion, or $5.14 per share,