Odaily Planet Daily News Lookonchain monitored the US spot Bitcoin ETF data on May 27 and showed: 1. Grayscale GBTC increased its holdings of 216 bitcoins, worth approximately US$15 million; 2. Grayscale currently holds a total of 289,041 bitcoins, worth approximately US$20.2 billion; 3. BlackRock increased its holdings of 2,642 bitcoins, worth approximately US$89.7 million, and currently holds a total of 287,168 BTC, worth approximately US$20.08 billion; 4. Nine US Bitcoin ETFs increased their holdings by a total of 3,028 bitcoins, worth approximately US$211.8 million.