U.S. spot Bitcoin exchange-traded funds (ETFs) have strung together eight consecutive sessions of net inflows, extending a buying streak that pushed weekly accumulation past $2.3 billion even as futures and spot demand indicators continued to flash weakness across the broader market.

Spot ETFs hold Bitcoin directly and trade on U.S. stock exchanges, offering exposure to the asset through standard brokerage accounts — one reason their daily flow data is among the most closely watched demand gauges in crypto.

Data from analytics platform Santiment Intelligence show U.S. Bitcoin spot ETFs took in $2.77 billion between September 17 and 27, while SoSoValue recorded an additional $31.07 million on September 28. The inflows reflect renewed appetite for Bitcoin exposure through regulated investment products. Yet futures and spot demand figures describe a contrasting trend in Bitcoin's underlying market activity, setting up a divergence between fund flows and broader demand.

Inflows Extend Into Late September

According to Santiment Intelligence, U.S. Bitcoin spot ETFs posted seven consecutive positive trading sessions from September 17 to 27. The inflows totaled $2.77 billion, reflecting renewed demand for Bitcoin exposure through investment products. Consecutive net-inflow sessions indicate that new share creations outpaced redem throughout the stretch.

SoSoValue reported that the streak extended to eight consecutive trading days, with Bitcoin spot ETFs recording $31.07 million in net inflows on September 28. Ethereum spot ETFs also attracted $1710 million that day, marking their seventh consecutive session of net inflows.

Santiment compared the recent ETF activity with August's rally. From August 17 to 27, spot Bitcoin ETFs recorded nine straight positive sessions and accumulated approximately $3.04 billion.

BlackRock and Fidelity were among the major contributors to the recent inflows, according to Santiment. The analytics platform also noted Bitcoin's recovery above $85,000 alongside increased attention toward the investment products.

Weekly ETF Accumulation Reaches $2.3 Billion

Analyst Darkfost reported that ETFs accumulated more than 27,800 BTC last week. At an average purchase price of $84,000, the acquisitions were worth approximately $2.3 billion.

Because ETF shares are backed by holdings of the underlying asset, sustained creations require issuers and their trading counterparties to buy Bitcoin in the market, tying fund flows directly to on-exchange demand.

Darkfost described the period as the largest weekly ETF inflow since the April 2025 low. He added that continued demand was prompting the entities offering these products to adjust their Bitcoin reserves.

Futures and Spot Demand Remain Negative

Despite the ETF inflows, Darkfost reported limited improvement in broader Bitcoin demand. Futures demand dropped sharply from 164,000 BTC to 3,000 BTC, while spot demand remained negative at -174,000 BTC. Consequently, the total 30-day demand estimate reached -171,000 BTC.

Futures demand tracks positioning in derivative contracts, while spot demand measures net buying in Bitcoin's spot order books — meaning the negative readings describe demand outside the ETF wrapper.

The negative readings came as Bitcoin climbed from $74,000 to $84,000 over 15 days, despite the weak demand data. The divergence highlights how ETF buying has differed from demand across futures and spot markets during the rally. Whether futures and spot demand recover alongside continued fund inflows — moving the -171,000 BTC 30-day estimate back toward balance — is the development that would narrow the gap between the two demand pictures. Santiment cautioned that sustained ETF enthusiasm could eventually lead to excessive buying as prices rise.