Spot Bitcoin ETFs in the United States saw a net inflow of $998.95 million in trading on Monday, September 21, 2026, making this day the ninth-largest daily inflow since the funds launched on January 11, 2024. This figure is also the highest of its kind since October 6, 2025, the day on which the digital currency hit an all-time high of around $126,200.

Flow details by fund

BlackRock topped the list of beneficiaries of these inflows, with its IBIT fund alone recording a net inflow of $381.37 million, bringing the fund’s total historical inflows to $64.506 billion. ARKB, from “Ark Invest” and “21 Shares,” came in second with an inflow of $289.12 million, bringing its cumulative inflows to $1.370 billion. Third place went to FBTC, Fidelity’s fund, which attracted $238.84 million that day.

Market context and its impact on price

This record surge in inflows comes after a streak of volatility in the market, as this session marked the first consecutive bullish wave over three days within a two-week period. The inflow coincided with a rise in the price of Bitcoin, which briefly broke through the $87,300 barrier, reaching its highest level since January, delivering quarterly gains of 44% and outperforming most major assets, including gold.

Analysts attribute these strong inflows to renewed institutional demand, which emerged despite the challenges the market has recently faced, such as the Senate vote failure on the “Clarity Act” and interest rate hikes by the Federal Reserve. With this rise, total net inflows for September to date reached $1.31 billion, following a strong inflow of $3.52 billion in August.

Official sources

These data were documented uniformly by leading financial data analytics platforms in the digital currency space, foremost among them:

· SoSoValue: the primary source for daily flow data for exchange-traded funds, which has been relied upon by many specialized media outlets.

· CoinDesk: published a detailed report on the event titled “Spot Bitcoin ETFs attract nearly $1 billion on Monday, the ninth-largest inflow ever.”

· The Block: provided an in-depth analysis of the data and the flows associated with Ethereum funds.