Bitcoin ETF inflows collapse 87% from Monday peak to Friday

• Monday’s $998.95 million inflow fell 87% to $134.47 million by Friday, though inflows continued for a seventh straight session.
• CryptoQuant tracked $2.52 billion in net BTC leaving major exchanges between September 22 and 24, 2026.
• River found ETFs bought only about 18,000 BTC in September, trailing their average monthly pace since launch.

• $2.39B weekly spot Bitcoin ETF inflow, largest total of 2026
• 81% share of BTC supply unmoved for six months, per River
• $108.42B total assets now held across US spot Bitcoin ETFs

Spot Bitcoin ETFs listed in the United States absorbed $2.39 billion in net inflows for the week ended Friday, September 25, 2026, the largest weekly total of 2026, according to SoSoValue data first detailed in reporting by BeInCrypto. The number looks strong in isolation. Daily flow data tells a different story, one that matters for anyone sizing positions around the idea that institutional demand for Bitcoin is accelerating.

Inflows Crater 87% From Monday’s $998.95 Million Peak

Monday, September 21’s $998.95 million inflow followed a 6.7% jump in Bitcoin’s price on the heaviest trading volume since August 21. About $262 million in short positions were forcibly closed within an hour, a liquidation cascade that pushed those traders to buy back into the rally. Funds had also just returned to the market after the Federal Reserve’s September 16 hike to a 3.75% to 4% range.

The mood reversed on Wednesday, September 23. S&P Global’s business survey showed the fastest US growth since July 2021, and the 10-year Treasury yield climbed above 5%.

Bitcoin fell below $84,000 within an hour of that data, and BeInCrypto flagged the next day that ETF buying had shrunk for three straight sessions. By Friday, inflows had dropped to $134.47 million, 87% below Monday’s peak, even as money technically kept arriving for a seventh consecutive day.

Bitcoin now trades near $84,241, down 0.06% over 24 hours, with the ETF complex holding $108.42 billion in total assets.

CryptoQuant Tracks $2.52 Billion Leaving Exchanges in Three Days

Not every indicator points to weak demand. CryptoQuant recorded about $2.52 billion in net BTC withdrawals from major exchanges between September 22 and 24, and a trader known as Crypto Rover put the four-day figure at $2.7 billion in a post on X dated September 26. Coins leaving trading platforms typically move into long-term cold storage rather than back onto the market.

Santiment data shows wallets holding between 100 and 1,000 BTC, a bracket often used as a proxy for mid-size institutional or high-net-worth buyers, have accumulated 113,950 BTC since July 15. River separately reports that long-term holders have added more than 3 million BTC since 2020.

River Says 81% of Supply Has Not Moved in Six Months

River, a Bitcoin financial services firm, reads the same data as a supply story rather than a demand story. Its September 23 analysis found that 81% of Bitcoin’s supply, or 16.3 million BTC, has not moved in at least six months, while exchange trading volume sits 30% below where it started the year.

ETFs had bought only about 18,000 BTC in September as of that report, a pace trailing their monthly average since launch.

Bitcoin has risen 50% without a real increase in demand.

River, Bitcoin financial services firm

In River’s framing, fewer coins changing hands has lifted the price more than new buyers have. The firm laid out the case in a post on X the same day.

For now, ETF issuers are drawing on a shrinking float rather than a growing buyer base, according to River’s read of the data.

The CCS read. This week’s number is a supply story, not a demand story, and that distinction matters for anyone leveraged against ETF flow data. If long-term holders keep sitting on 81% of supply, issuers are pulling inflows from a shrinking float, which raises volatility risk for strategies that assume steady liquidity. The real test isn’t this week’s $2.39 billion total, it’s whether October’s ETF pace beats September’s 18,000 BTC clip.

The next data point arrives Wednesday, September 30, 2026, when the Commerce Department releases August’s personal consumption expenditures inflation reading, the Fed’s preferred price gauge. Economists expect a methodology change to pull the headline figure lower, which could reopen the door for rate-cut bets that fueled Monday’s rally. River’s own caveat stands unresolved: nobody, by the firm’s own admission, can say when actual buying demand will return.