This monitor tracks daily net flows into and out of US spot Bitcoin ETFs and converts them into the metric that actually drives price: how many days of newly mined Bitcoin supply each flow represents. Flow data: Farside Investors. Supply and trend computations: TCB Research.
Daily net flows
| Session | Net flow (US$m) |
|---|---|
| 10 Aug 2026 | -$144.6M |
| 11 Aug 2026 | +$7.8M |
| 12 Aug 2026 | -$61.1M |
| 13 Aug 2026 | -$131.1M |
| 14 Aug 2026 | -$56.2M |
| 17 Aug 2026 | +$297.5M |
| 18 Aug 2026 | +$189.3M |
| 19 Aug 2026 | +$517.2M |
| 20 Aug 2026 | +$606.3M |
| 21 Aug 2026 | +$307.5M |
What TCB Research computes from this
- Over the last five sessions, net ETF flows totalled $1,918M (5 of 5 days positive), a net accumulation trend (TCB calculation).
- BlackRock’s IBIT drove 78% of the day’s net flow, underlining how concentrated US ETF demand has become in a single issuer (TCB calculation, 21 Aug 2026).
- Since launch, US spot Bitcoin ETFs have taken in a net $53.8B, about 695,486 BTC at today’s price, a structural buyer that did not exist before 2024 (TCB calculation from Farside cumulative data).
Methodology. Net flow is the daily total across all US spot Bitcoin ETFs. TCB converts the dollar figure to coins at the current Bitcoin price, then divides by daily issuance of about 450 BTC (3.125 BTC per block across roughly 144 blocks a day after the 2024 halving) to express each flow in days of mined supply. Cumulative figures are net since the funds began trading in January 2024.
Data is provided for research purposes and may contain inaccuracies. Not investment advice.