According to a report by Bitcoin.com on March 17, the latest data shows that the US Bitcoin spot ETFs have reduced their BTC holdings by 4.76% since February 6, 2025. From January 1 to February 6, these funds added approximately 56,802.86 BTC to their balance sheets, but over the past 35 days, their holdings have decreased by 55,348 BTC.
As of March 14, the total value of BTC held by US Bitcoin spot ETFs was $93.25 billion, accounting for 5.6% of the total BTC market capitalization. BlackRock's IBIT has consolidated its leading position with net inflows of $39.24 billion and holdings of 568,559.37 BTC. Fidelity's FBTC is in second place, with total inflows of $11.25 billion and holdings of 194,269.83 BTC. Meanwhile, Grayscale's GBTC, despite recording a net outflow of $22.5 billion, still ranks third with holdings of 193,870.05 BTC.
The three giants, IBIT, FBTC, and GBTC, collectively account for 85.26% of the entire spot ETF holdings. On February 14, Osprey Funds submitted an S-1 registration statement for its Osprey Bitcoin Trust (OBTC) to the US SEC. As of March 16, 2025, OBTC has not yet received SEC approval, but according to timechainindex.com, the fund has already held approximately 1,934 BTC, valued at $160 million.




