Ethereum ETF inflows challenge Bitcoin dominance in September
Ethereum (ETH)
Editor:
Eugene Serbin
Cryptobriefing.com reports that Ethereum ETFs are outpacing Bitcoin in net capital inflows for September, driven by staking appeal and institutional rotation. While Bitcoin ETFs recorded a massive $731 million inflow on September 3, they subsequently lost approximately $463 million over four consecutive sessions from September 8 to 11. In contrast, Ethereum ETFs maintained steady momentum, logging $216 million in inflows on September 11 alone.
Through mid-September, Ethereum ETFs captured roughly $324 million in net inflows, edging past Bitcoin’s $307 million. The full-month picture shows Ethereum attracting around $445 million versus Bitcoin’s $467 million. BlackRock’s ETHA product posted standout days, including $148.8 million on September 11 and $80.5 million on September 14.
This momentum follows August’s breakout performance of $1.75 billion in net inflows for Ethereum ETFs. Cumulative net inflows for Ethereum ETFs now stand at roughly $13.5 billion since launch. The competitive landscape includes Fidelity and Grayscale contributing meaningful volume across both asset classes. Product differentiation, such as staking features, helps justify crypto allocations for conservative institutional investors.
How the market reacted
Whalio's own Binance spot order flow for ETH, measured when this story was written up on 15 September 2026. Not the outlet's figures.
Whalio’s Binance spot data for Ethereum shows a price of $2,515.75 with a 24-hour buy ratio of 51.5%, indicating a slight majority of buying pressure over the full day. However, shorter timeframes reveal fading momentum, with the 1-hour buy ratio dropping to 39.1% and the 4-hour ratio at 47.0%. The 24-hour volume delta is positive at $27,755,975, contrasting with negative deltas of -$6,018,881 (1h) and -$5,215,467 (4h). This suggests that while buying pressure built over the day, it has weakened in the most recent hours. The Cumulative Volume Delta (CVD) for the 24-hour close is -$50,984,071, indicating that sell volume has outweighed buy volume in total executed trades despite the positive delta figure. Net buying occurred in only 8 of the 24 hours, highlighting intermittent rather than sustained demand.
The latest daily buy ratio of 46.8% sits at the 16th percentile of the last 322 days, against a median of 49.5% - weaker buying than most days.
Was that an ordinary day?
The same Binance spot measurements for ETH, averaged over the days leading up to the story.
Comparing today’s activity to the preceding week, the 24-hour buy ratio of 51.5% is 3.3 percentage points higher than the 7-day average of 48.2%. This represents a 1.16x increase in volume compared to the weekly average, marking an unusual spike in trading activity. Over the past 8 days, the coin saw a price change of +1.0% with a total volume delta of -$117,616,538. Today’s positive 24-hour volume delta of $27,755,975 contrasts sharply with the cumulative negative delta of the previous week. While the buy ratio is elevated relative to the weekly average, the broader weekly trend remains dominated by net outflows.