Bitcoin held above $81,000 in Friday’s Asian morning after U.S. spot bitcoin exchange-traded products recorded $730.8 million of net inflows on Thursday, their largest daily total since Jan. 14.

Farside Investors’ automated fund-flow table shows the Sept. 3 total was led by BlackRock’s IBIT at $454 million, followed by ARKB at $137.7 million and Fidelity’s FBTC at $74.4 million. Coinburn calculates that IBIT supplied about 62.1% of the day’s net total. Seven products were positive, two were negative and three were flat.

The result matters because it paired a large flow into regulated U.S. bitcoin wrappers with a broad repricing of interest-rate expectations. It does not, by itself, prove a durable institutional allocation cycle or establish that ETF demand caused bitcoin’s move.

A large day inside an uneven sequence

The Sept. 3 inflow followed $101.1 million of net inflows on Sept. 2 and a $236.5 million net outflow on Sept. 1, according to Farside. That three-session sequence totals a positive $595.4 million, but the sharp changes in direction show why one day should not be treated as a trend.

Farside’s complete daily series lists $840.6 million for Jan. 14 and no larger positive session between then and Sept. 3. The Sept. 3 total is therefore the strongest in more than seven months, not a record for the products.

Net flow is also narrower than trading volume. It estimates money entering or leaving the fund complex after creations and redemptions; it does not measure every purchase and sale of ETF shares, identify the end investors or reveal whether allocations were strategic, hedged or short-term.

Fed repricing supplied the macro backdrop

Federal Reserve Governor Christopher Waller said on Sept. 3 that he would be inclined to support holding the federal-funds target steady if incoming August data show continued progress toward the Fed’s 2% inflation goal. He also said he would consider a rate increase if inflation comes in hot.

That conditional language is important. Waller described his own policy position, not a decision by the Federal Open Market Committee, which is scheduled to meet Sept. 15–16. The market still faces an August employment report and inflation reading before that decision.

Interest-rate expectations affect bitcoin through several channels. Higher expected policy rates can lift cash and bond yields, strengthen the dollar and increase the opportunity cost of holding assets that do not produce contractual income. A reduced probability of tightening can ease those pressures. Those relationships are context, however, not proof that a single speech produced every crypto or ETF move.

Bitcoin’s window does not match the ETF session

CoinGecko quoted bitcoin at approximately $81,033 at 11:00 UTC on Sept. 4, up 4.4% over its trailing 24-hour window. The aggregated BTC/USD market showed a 24-hour range of roughly $77,107 to $82,108.

That rolling crypto window overlaps but does not match the Sept. 3 U.S. ETF trading session. Bitcoin trades continuously across venues, while the ETF flow figures are assigned to a U.S. trading date and can be updated as issuers and data providers finalize inputs. The price move therefore should not be converted into a claim about how much of the rally the funds caused.

The next tests are whether the flow remains positive for multiple sessions and whether the upcoming U.S. inflation data validate the softer policy interpretation. Until then, the verified development is a large one-day inflow alongside a bitcoin rebound—not confirmation of a new regime.

The ETF event window is the Sept. 3 U.S. session. Waller’s remarks were delivered Sept. 3. The crypto-price snapshot is 11:00 UTC, or 7:00 a.m. EDT, on Sept. 4. Coinburn’s publication window is the Sept. 4 open in America/New_York.

Primary sourceFarside Investors — complete U.S. bitcoin ETF daily flow dataset

The complete source packet and revision history are retained with the newsroom record.

Automated desk disclosure

Automated systems may have assisted with source organization and drafting. Coinburn is accountable for the published text and maintains a revision record.

Financial-risk note

This article provides news and analysis, not investment, legal or tax advice. Digital assets are volatile and may result in total loss.