According to CoinGlass, the Coinbase Bitcoin premium index has recorded a negative premium for 78 consecutive days from May 19 to the present. As of 18:00 on the 4th, the latest figure is -0.1145%. The previous longest negative record was 40 days, which lasted from January 16 to February 24 this year. With buying pressure from US investors relatively weakened, the duration of the negative premium continues to break historical records daily. Past data shows that long-term negative premiums are often accompanied by a slowdown in buying sentiment from US investors and a weakening of institutional demand.