According to BlockBeats, on May 23, according to Lookonchain data monitoring, 9 US Bitcoin ETFs increased their holdings by 2,511 BTC today, equivalent to about $170 million. BlackRock increased its holdings by 1,321 BTC (about $89.55 million) and currently holds 283,205 BTC (about $19.2 billion). Grayscale reduced its holdings by 12 BTC (about $800,000) and currently holds 289,500 BTC (about $19.63 billion).