Coinbase's Bitcoin Premium Index has recorded a negative premium for 10 consecutive days, with the latest figure expanding to -0.1573%, according to Coinglass data on January 25. Over the past month, the index has shown a negative premium on 28 out of 30 days. This index, which compares Bitcoin prices on Coinbase to the global average, serves as a key indicator of U.S. market capital flows and investor sentiment. A negative premium suggests lower demand on Coinbase compared to global markets, indicating potential selling pressure and increased market risk-aversion in the U.S.