$201.9 million in net outflows from U.S. spot Bitcoin ETFs on Aug. 28 ended a nine-day consecutive-inflow run, per SoSoValue, trimming cumulative net inflows to roughly $55.1 billion against $93.9 billion in total net assets. Ethereum spot ETFs moved the other direction that session, taking in $102.1 million to push their own streak to 10 days.
Flow snapshot, Aug. 28 (reported)
| Product | Aug. 28 flow | Streak | Cumulative net inflows | Total net assets |
|---|---|---|---|---|
| U.S. spot BTC ETFs ($BTC) | -$201.9M | 9 days, ended | ~$55.1B | ~$93.9B |
| U.S. spot ETH ETFs ($ETH) | +$102.1M | 10 days, active | ~$12.9B | ~$13.8B |
Ethereum funds are roughly 14.7% the size of the Bitcoin product base by total net assets. Cumulative ETH inflows of $12.9 billion represent about 93.5% of those total assets; the BTC equivalent is roughly 58.7%. BTC products launched in January 2024 after years of regulatory rejections and have accumulated a larger, older capital base. ETH products run on a smaller scale, which makes each inflow day comparatively more visible in ratio terms.
Friday's reversal is modest against the streak that preceded it. Bitcoin ETFs gathered $2.8 billion across the preceding eight-day run, with daily prints clearing $300 million repeatedly and peaking above $600 million on Aug. 20. A $201.9 million outflow is less than a third of that single-session peak.
What broke the streak
Federal Reserve Chair Kevin Warsh delivered hawkish remarks at Jackson Hole, cooling a Bitcoin rally that had been carrying the token toward $80,000. BTC slipped on the news before recovering to around $79,000 over the weekend.
Decrypt's ETF flow tracker flipped its Bitcoin sentiment reading to "bearish" on Aug. 28; Ethereum held at "bullish." The divergence lands differently on a per-unit-of-asset-base read: the two fund complexes differ in total assets by a factor of roughly 6.8, yet ETH inflows on the day ran to more than half the BTC outflow in absolute dollars. Ethereum's $12.9 billion in cumulative net inflows now sits less than $900 million below the funds' full $13.8 billion in total net assets.