Bitcoin ETF flows totaled $159.9 million on September 14, 2026, with IBIT leading inflows at $134.3 million and ARKB seeing outflows of $42 million.
Bitcoin ETFs experienced a $482.5M outflow for September 8-11, with IBIT flipping to a net outflow after being the previous week's largest inflow driver. Ethereum ETFs remained positive with $139.7M inflow, though Bitcoin's weakness pushed combined flows negative at $342.8M for the holiday-shortened week.
Bitcoin ETFs experienced a $482.5M outflow for September 8-11, with ARKB and IBIT driving the decline, while Ethereum ETFs saw $139.7M inflows. Combined crypto ETF flows swung negative to -$342.8M from the prior week's +$1.10B, as spot demand weakened and leverage positions unwound.
Bitcoin investment fund flows shifted dramatically, with Grayscale's ARKB accounting for a $78 million outflow on Wednesday after a $138 million inflow six days prior, causing the entire complex to decline by $120 million while most other asset classes gained. Most bitcoin funds traded below their net asset value, with only Grayscale's mini trust and Invesco's BTCO maintaining premiums.