Bitcoin ETF Outflows End a Nine-Day Run

US spot bitcoin exchange-traded funds shed money on the last Wednesday of September, and the run of inflows that had preceded the day is over. The Block's figures for Bitcoin ETF outflows September 30 2026 FBTC put the group's net outflow at $148.7 million, with Fidelity's FBTC accounting for most of it. The same session, US spot ether funds also finished with money leaving. A second outlet, reading the same tape a day later, landed on the same story in rounded form.

What happened

The Block reported the flows on 1 October. The session in question was Wednesday 30 September. Net outflow means that, across the US spot bitcoin ETFs as a group, more money left than came in. The net figure was $148.7 million.

A spot bitcoin ETF is a fund that holds bitcoin and lists its shares on an exchange, so the share price is built to track the coin. The investor owns the share. The fund owns the bitcoin.

The day mattered because of what it ended. The Block said the outflow stopped a nine-day run in which $3.1 billion had flowed in. Nine sessions of net additions, then one session of a net exit. The streak figure and the single-day figure answer different questions.

The $3.1 billion is the inflow run. The $148.7 million is the day that closed it.

Inside the day, three funds are named. Fidelity's FBTC led, with $125.6 million out. Bitwise's BITB had $13.6 million out. BlackRock's IBIT had $9.5 million out.

"Led" means FBTC was the largest outflow among the funds The Block identified. The report, as used here, does not itemize every other ticker, and this article does not imply that unnamed funds were flat or were not.

US spot ether ETFs, the same kind of structure with ether as the holding, had $59.6 million out on the same day. Fidelity's FETH led that group, at $26.6 million. No other ether ticker is named in the figures used here.

CryptoTimes, citing SoSoValue as of 9:00 p.m. Moscow time on 1 October (18:00 UTC), reported about $149 million for the bitcoin complex, $125.58 million for FBTC, $13.63 million for BITB, $9.48 million for IBIT, and $59.58 million for the ether funds. Those are the same lines, rounded to the same tape. The Block's figures are the primary set in this article.

The Block's story is its 1 October report. The SoSoValue reading is the CryptoTimes note.

Why it matters

Flows are not the price of bitcoin, and they are not a verdict on the funds. They are a record of creations and redemptions: money entering the wrapper, or money leaving it, on a given day. A net outflow of $148.7 million says that leaving won on 30 September.

It does not say by how much the coin moved, and it does not say what the funds are worth in total. Those figures are not in the reports used here, so they are not guessed.

The streak is the context The Block supplied, and it cuts both ways. Nine days and $3.1 billion of net inflows is a long run of additions. Ending it is a change of direction for a session, not an erasure of the run. A reader who quotes only the outflow, and forgets the nine days, misreads the report.

A reader who quotes only the streak, and treats 30 September as another inflow day, misreads it the other way. Both numbers are in the same story because the story is that one followed the other.

FBTC's share of the day is large on the figures given. Of the $148.7 million net outflow, Fidelity's fund accounted for $125.6 million, with BITB and IBIT named behind it at $13.6 million and $9.5 million. Concentration of that kind means the group result and the single-fund result are close but not identical.

IBIT's $9.5 million outflow is real on The Block's tape and still much smaller than FBTC's. Describing the day as a uniform exit from every issuer would be looser than the data.

The ether figure keeps the session from being a bitcoin-only anecdote. Spot ether ETFs lost a net $59.6 million, and FETH led at $26.6 million. The Block presented that as the same day's result, not as part of the nine-day bitcoin streak. The bitcoin streak is a bitcoin-fund fact.

The ether outflow is a parallel line. CryptoTimes and SoSoValue, checking the tape as of the evening of 1 October in Moscow, did not tell a different story. They tightened the rounding: about $149 million, $125.58 million, $13.63 million, $9.48 million, and $59.58 million.

For related market context, see Evernorth XRP treasury and perpetuals and MiFID.

What's next

The reports stop at 30 September's results and at the check of that tape on 1 October. They do not, as used here, give the flow for the next session, and this article does not forecast one. A nine-day inflow run has ended. Whether another run starts is not in the data.

What is in the data is a clean set of primary figures from The Block, with a second source on the same lines. US spot bitcoin ETFs: $148.7 million net out on 30 September. FBTC: $125.6 million out. BITB: $13.6 million out.

IBIT: $9.5 million out. The inflow run that stopped: nine days, $3.1 billion. US spot ether ETFs: $59.6 million out, FETH leading at $26.6 million. CryptoTimes, via SoSoValue, matches that tape closely enough that the two accounts do not disagree about the direction or the leaders.