Wall Street analysts expect spot trading volumes at Coinbase (COIN) to slow further in the third quarter, in part due to the lack of a catalyst for cryptocurrencies and uncertain regulatory environments ahead of the presidential election. The cryptocurrency exchange, which will report after-hours earnings on Wednesday, expects third-quarter revenue to drop about 13 percent, to $1.26 billion from $1.45 billion in the previous quarter, according to estimates from FactSet. Meanwhile, earnings per share (EPS) are expected to be $0.46, up from $0.14 in the second quarter. "Volumes are expected to remain weak in the quarter, primarily due to lower retail trading revenue," Barclays analyst Benjamin Buddish wrote in a note. He rated the stock equally and raised his price target to $175 from $169, while lowering his third-quarter earnings per share forecast to $1.05 from $1.62.