According to Deep Tide TechFlow news, on December 21, based on SoSoValue data, yesterday (Eastern Time December 20) the Bitcoin spot ETF had a total net outflow of $277 million. Yesterday, Grayscale ETF GBTC had a single-day net outflow of $57.3609 million, and the historical net outflow of GBTC is currently $21.293 billion.

Grayscale Bitcoin Mini Trust ETF BTC had a single-day net inflow of $6.4074 million, and the historical total net inflow of Grayscale Bitcoin Mini Trust BTC is currently $860 million. Following that is Franklin Templeton ETF EZBC, with a single-day net inflow of $5.6136 million, and the historical total net inflow of EZBC has reached $467 million.

As of the time of writing, the total net asset value of the Bitcoin spot ETF is $10.9725 billion, with an ETF net asset ratio (market capitalization relative to Bitcoin's total market capitalization) reaching 5.75%. The historical cumulative net inflow has reached $36.052 billion.