According to Odaily, recent data from Lookonchain reveals that Grayscale's GBTC and BlackRock have increased their Bitcoin holdings. On May 23, Grayscale GBTC added 12 Bitcoins to its portfolio, valued at approximately $804,000. This brings Grayscale's total Bitcoin holdings to 289,500, worth an estimated $19.63 billion.

In addition, BlackRock has also increased its Bitcoin holdings, adding 1,321 Bitcoins, valued at approximately $89.55 million. This brings BlackRock's total Bitcoin holdings to 283,205, worth an estimated $19.2 billion.

Furthermore, nine Bitcoin ETFs collectively added 2,511 Bitcoins to their holdings, valued at approximately $170.22 million. This data indicates a growing interest in Bitcoin among institutional investors, with Grayscale and BlackRock leading the way.