Bitcoin spot ETF inflows reached US$3.8 billion, setting a peak record for three consecutive weeks i

Strongest three weeks so far in 2026: U.S. spot Bitcoin ETF inflows reach US$3.8 billion

U.S. -listed spot Bitcoin exchange-traded funds (ETFs) continued a surge in demand in late summer, setting a record for the strongest three-week inflows in 2026. The rebound coincided with Bitcoin trading around $80,000, with weekly inflows accelerating in the week ending Friday.

These funds attracted $986.9 million in inflows in the week ended Friday, according to SoSoValue. This brings cumulative net inflows to US$3.8 billion over the past three weeks. On Friday, the total net assets of the series were $101.3 billion, up to $103.3 billion the previous day. Since its establishment, cumulative net capital inflows have reached US$55.6 billion.

Key Points

• The U.S. spot Bitcoin ETF attracted $986.9 million in the week ended Friday, bringing the total three-week net inflow to $3.8 billion.
• Total net inflows on Friday were $174.6 million, well below Thursday's strong surge of nearly $731 million.
• BlackRock's IBIT led gains on Friday, receiving $117.4 million in funds in a single day, accounting for about 67% of the day's inflows, according to Farside Investors.
• Although Bitcoin ETF momentum has improved compared with the previous week, year-to-date capital flows are still approximately minus US$1 billion, reflecting the continued uncertainty caused by outflows in early 2026.
• Although Bitcoin inflows strengthened, cash flows from spot Ether and XRP ETFs fell significantly on a weekly basis.

Three-week rally highlights shift in demand

The latest sequence of inflows marks a significant improvement from early 2026, when spot Bitcoin ETFs experienced significant outflows. This comparison is crucial for market participants tracking whether institutional demand is expanding or simply responding to short-term price movements.

According to SoSoValue, the three-week total net inflows of $3.8 billion are more solid than at the beginning of the year. However, the overall picture remains mixed: net capital flow year-to-date is reported to be about minus US$1 billion. This means that the ETF sector is recovering, but has not yet fully reversed the cumulative losses caused in previous months.

Net asset value also confirms the speed of recovery. As of Friday, the total net assets of the U.S. -listed spot Bitcoin ETF stood at $101.3 billion, after briefly climbing to $103.3 billion the previous day.

Capital inflows cooled on Friday after Thursday's surge

Market demand did not maintain Thursday's strength. According to reports from this week's fund flow review, the U.S. spot Bitcoin ETF recorded a net inflow of $174.6 million on Friday. That figure fell sharply from the nearly $731 million recorded the previous day.

BlackRock's iShares Bitcoin Trust (IBIT) remains the main driving force in the overall total. According to Farside Investors data cited, IBIT received $117.4 million on Friday, contributing about 67% of the day's net inflows.

In other respects, Fidelity's Wise Origin Bitcoin Fund (FBTC) was the only other fund to record a net inflow, attracting $57.2 million. All other U.S. spot Bitcoin ETFs had no net capital flow on the day, highlighting the potential for high concentration of capital inflow activity even in periods of overall strength.

Price movements also provide the background for this pattern of capital flows. On Friday, Bitcoin fell from about $81,200 to briefly below $79,000. As of press time, based on CoinGecko data included in the source, the Bitcoin transaction price was US$79,716, an increase of approximately 2.6% from the previous seven days.

Withdrawal of funds from Ethereum and XRP ETFs

The rebound in Bitcoin ETF inflows has been accompanied by a significant weakening in demand for other cryptocurrency asset ETFs. Compared with the previous week, Bitcoin ETF inflows increased by approximately 7%, while U.S. spot Ethereum and XRP ETF flows fell by approximately 74% and 83% respectively, based on SoSoValue data.

SoValue showed that cash Ethereum ETF inflows fell to US$218.4 million from US$824.4 million a week ago. For XRP, inflows fell from US$110.5 million to US$19 million during the same comparative period.

Despite the weekly correction, Ethereum and XRP ETF products maintained net positive inflows throughout the year. SoSoValue data cited in the source shows that the U.S. spot Ethereum ETF has recorded net inflows of approximately US$863 million year-to-date, while the XRP ETF has attracted approximately US$515 million.

This divergence provides a useful signal to investors: Even if institutional allocation preferences shift, the shift tends to occur unevenly across asset classes rather than universally consistent. For traders and configurators, the key is whether Bitcoin's specific demand trends can persist long enough to further erode year-to-date negative positioning.

As money flows become the focus, what to focus on next

Given the resilience of Bitcoin ETF inflows after early outflows, the next question is whether the sector can continue to flow momentum beyond this three-week window-especially considering the cooling in inflows on Friday compared with Thursday's unusually large inflow day. Investors should watch whether IBIT and FBTC continue to concentrate most of the inflows, and whether Ethereum and XRP ETFs continue to be under pressure or stabilize after recent weekly declines.