Coinbase's Bitcoin Premium Index has turned positive, registering at 0.0037% after four consecutive days of negative readings, according to Coinglass data on May 2. This shift suggests a gradual recovery in buying sentiment within the U.S. market.The Coinbase Bitcoin Premium Index measures the price difference between Bitcoin on Coinbase and the global market average. A positive premium indicates that Bitcoin's price on Coinbase is higher than the global average, often reflecting strong buying demand and optimistic investor sentiment in the U.S. market.