South Korea’s largest exchange, Upbit, listed Optimism (OP) today, with trading set to begin at 16:30 Korea time. The news briefly drove OP up more than 13% on the day, from around $0.71 to a high of $0.84. Its 24-hour trading volume surged by approximately 420%, surpassing $700 million. (Source: CoinJournal, November 8)