According to iChainfo data, the total net inflow of the US Bitcoin spot ETF was approximately $637 million on December 16th (Eastern Time) yesterday.
The net inflow of the BlackRock ETF IBIT was approximately $418 million; the net inflow of the Grayscale ETF GBTC was approximately $17.65 million; the net inflow of the Fidelity ETF FBTC was approximately $116 million; the net inflow of the Ark & 21Shares ETF ARKB was approximately $47.73 million; the net inflow of the Bitwise ETF BITB was approximately $30.67 million; the net inflow of the Grayscale Micro ETF BTC was approximately $6.57 million; the VanEck ETF HODL, the WisdomTree ETF BTCW, the Valkyrie ETF BRRR, the Franklin ETF EZBC, the Invesco Galaxy ETF BTCO, and the Hashdex ETF DEFI had no net inflows or outflows.