According to Lookonchain monitoring, Grayscale GBTC reduced its holdings by 404 bitcoins ($23.2 million) on May 1 and now holds 296,714 bitcoins ($17 billion). 9 bitcoin ETFs (including Grayscale) reduced their holdings by 1,950 bitcoins ($111.93 million). BlackRock IBTC hasn't added to its bitcoin holdings for five consecutive days.