TechFlame News: According to Coinglass data, Coinbase's Bitcoin premium index has remained in negative territory for 80 consecutive days (from May 19 to date), with the latest reading at -0.0978%. Previously, the index logged a 40-day negative streak from January 16 to February 24 this year, setting a record for the longest consecutive negative stretch since the metric's inception—surpassing the roughly 30-day run during the 1011 crash. Historical data suggests that prolonged negative premiums often coincide with outflows of U.S. institutional capital, signaling potential short-term pullback pressure.