Bitcoin and Ethereum ETFs Pull In $2.6 Billion in Their Strongest Week of 2026

Wall Street did not tiptoe back into crypto last week. It came through the front door with $2.6 billion.

U.S. spot Bitcoin and Ethereum exchange-traded funds posted their strongest combined inflow week since October 2025 during the five trading sessions through August 21. Both fund groups also logged their best week of 2026.

The Block reported that Bitcoin funds took in roughly $1.9 billion while Ethereum products attracted $697.2 million. That was a roughly $3 billion swing from the prior week’s combined $392 million outflow.

The speed of that reversal matters. It was not one oversized order masking a weak week.

Bitcoin ETFs recorded positive flows in all five sessions, including $517.2 million on Wednesday and $606.3 million on Thursday. BlackRock’s IBIT accounted for $503 million of Thursday’s total.

The fund group’s cumulative net inflows have now reached $53.7 billion since the products began trading in January 2024. Thursday’s rush also showed where the marginal demand was concentrated: one BlackRock product supplied most of the day’s new money, even as the broader category stayed positive.

ETFs bought $1,920,000,000 in $BTC this week.

Biggest weekly inflow since October 2025. pic.twitter.com/c8rbuSmsRF

— Ted (@TedPillows) August 22, 2026

Trading volume exploded with the inflows.

The buying came with real market participation. Combined Bitcoin and Ethereum ETF trading volume more than tripled to approximately $29 billion.

Bitcoin fund volume rose to $22.1 billion from $6.9 billion, while Ethereum fund volume increased to $6.9 billion from $1.9 billion.

CryptoSlate connected the fund demand to one of crypto’s sharpest rallies in years. Bitcoin climbed from around $62,300 to briefly trade near $80,000, while Ethereum reached a seven-month high above $2,500 before both assets cooled from their peaks.

The rally unfolded as long-term Treasury yields fell and Washington moved toward a more supportive crypto policy posture. Those conditions eased some of the pressure that had kept regulated fund demand weak earlier in the year.

🚨BULLISH: Ethereum crosses $2,500 for the first time since March after surging 30% in five days.$ETH is up another 9% today.

It spent most of August stuck below $2,000.

The Aug 19 move was a 20% single-day surge, its largest since May 2025.

Spot ETH ETFs pulled in over $500… pic.twitter.com/Jh5sI21vTQ

— Coin Bureau (@coinbureau) August 21, 2026

The rebound is powerful, but the hole is not closed.

The weekly numbers are undeniably bullish, yet they need context. Bitcoin ETFs still stood at roughly $2.9 billion in net outflows for 2026, while Ethereum ETFs remained down about $192 million for the year.

The blockbuster week cut the combined year-to-date deficit from approximately $5.7 billion to $3.1 billion. It did not erase it.

That tension is what makes the next few weeks important. A one-week surge can be driven by traders chasing a breakout.

A sustained sequence of inflows would suggest that larger allocators are rebuilding long-term exposure after months of caution.

Bitcoin funds now hold about $96.1 billion in net assets, and cumulative net inflows since their 2024 launch have reached $53.7 billion. Ethereum funds have accumulated roughly $12.2 billion in net inflows since launch.

The clearest takeaway is simple: regulated demand returned at the same moment crypto broke decisively higher. If those ETF inflows continue after the first rush of price momentum fades, this week may look less like a short squeeze and more like the start of a broader institutional reset.

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