The daily total net flow (in USD) for spot bitcoin ETFs that follow the BTC price, namely BlackRock (IBIT), the Grayscale Bitcoin Trust (GBTC), Grayscale Bitcoin Mini Trust ETF (BTC), Fidelity (FBTC), Ark Invest/21Shares (ARKB), Bitwise (BITB), Franklin (EZBC), Invesco/Galaxy (BTCO), VanEck (HODL), Valkyrie (BRRR), WisdomTree (BTCW) and Hashdex (DEFI).