L'INFORMATEUR CRYPTOHome › Bitcoin ETF flows › Friday, September 18, 2026
Bitcoin and Ethereum ETF flows on Friday, September 18, 2026
US spot Bitcoin ETFs recorded net inflows of $433M in the Friday, September 18, 2026 session, the 2nd positive session in a row. Over the last 5 sessions, the balance stands at +$6.2M.
On the Ethereum side, spot ETFs show inflows of $143.8M.
Bitcoin closed around $81,205 (+6% on the session). Price and flows move in the same direction: the rally is supported by ETF demand.
The last 10 sessions
| Session | Bitcoin ETFs | Ethereum ETFs | BTC price |
|---|---|---|---|
| Friday, September 18, 2026 | +$433M | +$143.8M | $81,205 |
| Thursday, September 17, 2026 | +$159.5M | −$39.2M | $76,594 |
| Wednesday, September 16, 2026 | −$296M | −$224.1M | $76,080 |
| Tuesday, September 15, 2026 | −$450.3M | −$141.5M | $76,186 |
| Monday, September 14, 2026 | +$160M | +$121M | $78,982 |
| Friday, September 11, 2026 | −$13.3M | +$216.4M | $77,286 |
| Thursday, September 10, 2026 | −$282.6M | −$29.8M | $77,161 |
| Wednesday, September 9, 2026 | −$120.2M | +$34.8M | $78,235 |
| Tuesday, September 8, 2026 | −$46.6M | −$24.3M | $78,446 |
| Friday, September 4, 2026 | +$174.6M | +$26.5M | $79,793 |
Frequently asked questions
What are spot Bitcoin ETF flows?
They are the money flowing in and out of US-listed spot Bitcoin ETFs (BlackRock's IBIT, Fidelity's FBTC, Grayscale's GBTC…). A net inflow means the ETF had to buy Bitcoin to create new shares; a net outflow, that it sold some.
How do you read ETF flows for trading?
A series of net inflows reflects sustained institutional demand, rather supportive for the price. Heavy outflows during a rally show that institutions aren't following the move. Flow reversals often come before price reversals: always compare the bars with the Bitcoin curve.
When are the figures published?
A session's flows are known after the Wall Street close (4 pm New York time) and consolidated in the evening or the next morning. The current session's IBIT volume can be followed hour by hour in the dashboard.
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