Coinbase's Bitcoin premium index has been in negative premium for three consecutive weeks, currently reported at -0.0331%

Odaily News According to Coinglass data, the Coinbase Bitcoin Premium Index has remained in negative territory for three consecutive weeks (21 days) since December 15, 2025, currently at -0.0331%. This index measures the difference between the Bitcoin price on Coinbase (a major U.S. trading platform) and the global average market price. A negative premium typically reflects greater selling pressure in the U.S. market, declining investor risk appetite, rising market risk aversion, or capital outflows.