According to Foresight News, Asset management giants BlackRock and Grayscale collectively hold close to 3% of the total circulating supply of Bitcoin through their U.S. spot Bitcoin ETFs.

Specifically, BlackRock's iShares Bitcoin Trust (IBIT) holds 357,736.76150 BTC, while Grayscale's GBTC holds 227,712.3295 BTC. Additionally, Grayscale has further Bitcoin holdings, including 5,962 BTC in its Digital Large Cap Fund and 32,692.0926 BTC in its Grayscale Bitcoin Mini Trust.

This substantial accumulation highlights the growing influence of these major financial institutions in the cryptocurrency market.