Spot Bitcoin and Ethereum ETFs See Largest Weekly Inflows of 2026 Amid Crypto Rally

US spot Bitcoin and Ethereum exchange‑traded funds (ETFs) recorded their biggest weekly inflows of 2026 as a sharp rally in the underlying cryptocurrencies drew investors back into the funds.

Weekly inflows and cumulative subscriptions

According to SoSoValue data, Bitcoin ETFs received $1.918 billion and Ethereum ETFs $697.2 million over the five trading sessions through Aug. 21, for a combined $2.6 billion. The inflows represent the strongest weekly totals for the two groups in about ten months and the largest weekly intake for Bitcoin ETFs since the market sell‑off in October 2025. Since their debut in January 2024, Bitcoin ETFs have accumulated $53.7 billion in net subscriptions.

Crypto price surge

The inflows coincided with a notable price rally. Bitcoin rose from roughly $62,300 to near $80,000 on Friday, while Ethereum climbed to a seven‑month high above $2,500. At the time of reporting, prices had modestly retraced to around $76,550 for Bitcoin and $2,400 for Ethereum.

Macro and policy catalysts

Several developments appeared to support the inflows:

• The US Treasury announced on Aug. 19 an increase in the maximum size of liquidity‑support buybacks for long‑term Treasury securities, prompting a drop in long‑term yields and easing financial conditions.
• President Donald Trump met with crypto executives at the White House and indicated the US was considering accumulating large amounts of Bitcoin and other digital assets.
• The SEC proposed a new “Regulation Crypto Assets” framework on Aug. 18, offering exemptions and a conditional safe harbor for qualifying token offerings.
• The CFTC convened its Innovation Advisory Committee on Aug. 20, discussing crypto regulation with representatives from Coinbase, Uniswap Labs and BitGo.

Technical backdrop and ETF demand

Bitcoin reclaimed its 200‑day moving average during the rally, and leveraged short positions were liquidated as prices accelerated. Ecoinometrics noted that ETF demand had been modest in early August but accelerated in the final sessions of the week, suggesting fresh capital rather than solely short‑covering activity. The firm’s ETF‑flow model places Bitcoin in a supported range of roughly $67,000–$78,000, with a fair‑value estimate near $72,000.

Outlook

The strong inflows reopen a structural source of demand for Bitcoin that had weakened after the October 2025 record‑high rally. Continued positive ETF subscriptions will be key to sustaining the price advance beyond the current weekly gain.