As the crypto tokens saw fresh rallies in August 2026, the ETF market was no exception. Carrying ahead this bullish sentiment. Spot Bitcoin [$BTC] ETFs recorded $730.8 million in net inflows on the 3rd of September, the strongest single-day inflow since the 14th of January.

On this day, BlackRock’s IBIT alone absorbed about $454 million, followed by ARK 21Shares’ ARKB at about $137.7 million and Fidelity’s FBTC at $74.4 million. There were smaller inflows into several other funds, while VanEck and WisdomTree saw modest outflows.

Is 2026 September slightly different from previous years?

Well, the month of September, which has historically been known to be unlucky for the crypto market, especially Bitcoin, has so far favored $BTC.

Source: SoSo Value

It was only on the 1st of September that $BTC ETFs saw approximately $236.5 million of net outflows. On 2nd September, however, things changed as the ETFs recorded $101 million of inflows and then the huge $730.8 million inflow on 3rd September.

On 4th September, too, the ETFs added another $174.6 million, bringing the four-day period to approximately $770 million of net inflows despite the large 1st September withdrawal.

What’s behind this huge single-day influx?

Here, the biggest catalyst appears to be the changing macroeconomic environment, particularly expectations around U.S. monetary policy.

For context, on 3rd September itself, Federal Reserve Governor Christopher Waller made comments that markets interpreted as dovish.

He said,

I would be inclined to support holding the target for the federal funds rate at its current setting.

At the same time, the price of Bitcoin faced a major surge. However, here’s an interesting catch, and that is the $80k price level needs to now become the new support line instead of resistance.

Though the RSI is currently sitting above the neutral zone, confirming the bullish sentiment, the widening Bollinger Bands confirm that volatility is still ripe.

Source: Trading View

This was further confirmed by a recent analysis by ​​MSB Intel, which highlighted that Bitcoin has historically spent very little time trading above $70,000.

According to AMBCrypto’s previous report, Bitcoin has 4,364 days of recorded daily closing prices, and in this, only 12.7% of those closes were above $70,000. In fact at press time, $BTC was trading at $79,622.23 after a drop of 2.1% in the past 24 hours.

Are altcoin ETFs following Bitcoin ETFs’ footsteps?

On the other hand, Ethereum [$ETH] ETFs also exhibited a somewhat similar pattern to $BTC ETFs. According to Farside Investors data, on 1st September, $ETH ETFs recorded a modest $8.6 million net inflow, but flows turned negative on 2nd September, with $48.2 million in net outflows.

Source: Farside Investors

However, buying returned strongly on 3rd September, when Ethereum ETFs attracted $141.4 million, the strongest day in this period. In fact, on 4th September, though the incoming money was considerably less, i.e., $25.9 million, the $ETH ETFs still managed to continue their inflow streak.

Other altcoins also saw inflows, with Solana [SOL] ETFs seeing mixed sentiments.

Source: SoSo Value

All this happened at the heels of Hashdex’s NCIQ ETF adding HYPE with a 3.4% allocation worth about $14.7 million, creating a new source of institutional demand.

Final Summary

  • Despite strong inflows, Bitcoin ETFs are unable to buoy the $BTC price surge above $80k.
  • Other ETFs are also exhibiting a similar pattern to $BTC ETFs with a few exceptions here and there.