According to TechFlow, based on SoSoValue data, yesterday (December 19, Eastern Time), the total net outflow of Bitcoin spot ETFs was US$680 million.

Yesterday, Grayscale ETF GBTC had a daily net outflow of $87.8625 million, and the current historical net outflow of GBTC is $21.236 billion. Grayscale Bitcoin Mini Trust ETF BTC had a daily net outflow of $189 million, and the current historical total net inflow of Grayscale Bitcoin Mini Trust BTC is $853 million. The Bitcoin spot ETF with the largest daily net inflow yesterday was WisdomTree ETF BTCW, with a daily net inflow of $2.0474 million, and the current historical total net inflow of BTCW is $229 million.

As of the time of publication, the net asset value of the Bitcoin spot ETF is $109.655 billion, with an ETF net asset ratio (market value as a percentage of Bitcoin's total market value) of 5.74%. The historical cumulative net inflow has reached $36.329 billion.