Bitcoin ETFs Pull In $1.9 Billion in a Week as BTC Jumps From the $60,000s to Above $76,000

Since Bitcoin ETFs opened 2024 to record demand, this is their strongest single week in nearly a year. US-listed spot Bitcoin and Ether ETFs pulled in a combined $2.615 billion between August 17 and August 21, according to SoSoValue data reported by KuCoin. That is the largest weekly inflow for both product categories since October 2025.

The number is a sharp reversal. The week before, August 10 to 14, Bitcoin ETFs alone saw $389.7 million in outflows, according to KuCoin. Crypto Briefing put last week's net outflow figure at roughly $392 million. Either way, the swing from outflow to inflow ran close to $3 billion in seven days.

Bitcoin did most of the work. Bitcoin ETFs took in about $1.917 billion, roughly 73% of the total, while Ether ETFs added $697.5 million, their largest weekly total of 2026 according to Crypto Briefing. Trading volume across the funds topped $29 billion for the week, more than tripling from the prior week.

What actually moved the price

The ETF flows didn't happen in a vacuum. Bitcoin rallied roughly 18% over about two days, climbing from the low $60,000s through $65,000, $70,000 and $75,000 before clearing $76,000 on August 21, according to KuCoin. Ether jumped even harder in percentage terms, rising 11.07% to $2,321 in one stretch and outperforming Bitcoin's 6.41% move on the day, according to dmarketforces.com, which also reported Ether gained roughly 18% over a single 24-hour period.

CoinGlass data cited by KuCoin showed about $3 billion in crypto position liquidations as Bitcoin crossed $70,000, with short positions accounting for most of the forced selling. Nansen senior research analyst Nicolai Søndergaard pointed to forced short covering, institutional demand and improved liquidity as the drivers, according to KuCoin.

dmarketforces.com traced the spark to the U.S. Treasury's August 19 announcement that it would double its long-dated bond buyback operations to at least $4 billion each. That move weakened the dollar and pushed capital into higher-beta assets like Ethereum, the outlet reported, adding that the buyback program is scheduled to run until November 4, 2026.

Not everyone read the rally as pure conviction buying. LVRG Research Director Nick Ruck warned that a single strong ETF week shouldn't be mistaken for a durable trend, a caution KuCoin included alongside the bullish flow numbers. Technical traders cited by dmarketforces.com noted Ethereum's daily RSI hit 82.2, an overbought signal, and said the rally is bullish but vulnerable to a sharp correction if leveraged longs unwind.

The fund-by-fund breakdown

BlackRock's iShares Bitcoin Trust, ticker IBIT, took in $239 million on August 21 alone, about 78% of that day's Bitcoin ETF intake, lifting its cumulative net inflows to $62.43 billion, according to KuCoin. Fidelity's Wise Origin Bitcoin Fund added $30.19 million that same day, pushing its total past $10.18 billion.

On the Ether side, BlackRock's iShares Ethereum Trust led Friday with $151 million, bringing its cumulative haul to $12.17 billion since launch. Grayscale's Ethereum Mini Trust ETF added $11.51 million, taking its total to $1.85 billion.

Combined net assets under management across both fund types hit $110.36 billion as of August 21, according to KuCoin, with Bitcoin ETFs at $96.07 billion and Ether ETFs at $14.30 billion. Bitcoin ETFs now represent roughly 6.17% of Bitcoin's total market value.

Still down for the year

Both fund categories remain negative on a year-to-date basis, according to Crypto Briefing, and are tracking toward their first full year of net outflows since Bitcoin ETFs launched in January 2024. One great week doesn't erase months of redemptions.

The rally also lands against a backdrop of rising long-term borrowing costs. The 30-year Treasury yield hit roughly 5.31% on August 17, its highest level since June 2007, according to the Epoch Times, while the 10-year climbed above 4.72%. Andrew Moran of the Epoch Times noted the U.S. has flooded markets with debt, with Treasury issuance up more than 10% year-over-year through the first seven months of 2026, according to data from the Securities Industry and Financial Markets Association.

Higher long-term yields alongside a Treasury liquidity move aimed at the long end of the curve create an unusual mix, and they raise a real question for the weeks ahead: does the Treasury's buyback expansion, running through November 4, keep pumping liquidity into risk assets even as inflation concerns keep 30-year yields elevated? The next several ETF flow reports from SoSoValue will show whether this week was the start of a trend or a short-covering spike that fades once leveraged positions clear out.