Odaily News Lookonchain monitored the US spot Bitcoin ETF data on May 20th and showed: 1. Grayscale GBTC increased its holdings of 59 bitcoins, worth approximately US$4 million; 2. Grayscale currently holds a total of 288,954 bitcoins, worth approximately US$19.5 billion; 3. Fidelity increased its holdings of 1,487 bitcoins, worth approximately US$100.35 million, and currently holds a total of 158,250 bitcoins, worth approximately US$10.56 billion; 4. 9 Bitcoin ETFs increased their holdings by a total of 3,077 bitcoins, worth approximately US$207,690.