Crypto ETF Inflows Surpass $3 Billion as Altcoin Products Attract $793 Million

US-based cryptocurrency exchange-traded funds (ETFs) experienced a surge in capital, amassing over $3 billion in a single week. This influx was driven by expanding investor interest beyond Bitcoin, notably reaching Ethereum and various altcoin-based products.

According to SoSoValue data, spot ETFs encompassing Bitcoin, Ethereum, Solana, XRP, and Zcash accumulated approximately $3.04 billion in net inflows between Monday and Thursday. Bitcoin maintained its position as the primary destination, absorbing $2.25 billion, while the remaining four assets collectively attracted nearly $793 million.

Bitcoin spot ETFs launched the week with a robust daily inflow of $999 million, marking the strongest single-day capital entry of 2026 and the most significant since October 6, 2025, when funds absorbed approximately $1.2 billion. These transactions represented an acquisition of roughly 11,530 BTC, the largest single-day coin intake since November 2024.

Demand remained steadfast through Thursday, marking the fourth consecutive day of positive inflows. The funds added $190.65 million on that day, bringing the four-day cumulative total to $2.25 billion.

Bitfinex noted that this renewed ETF demand has coincided with corporate treasury purchasing, establishing concurrent sources of spot demand for the first time this year.

This reversal in capital flows aligns with Bitcoin’s price recovery from below $58,000 in early June. By July 13, US spot Bitcoin ETFs had endured a year-to-date net deficit of $5.69 billion, but demand rebounded as the cryptocurrency recovered toward the mid-$80,000 range.

Despite the recent influx, the capital has yet to trigger another immediate price surge. Since Tuesday, Bitcoin has struggled to sustain momentum above $85,000, following a peak of $87,392 on September 21, according to Bitfinex. The firm identified a substantial concentration of recent purchasing between $85,000 and $86,500, estimating the aggregate break-even level for ETF investors at approximately $86,000.

This positioning places recent ETF buyers near the center of Bitcoin’s current trading range, rendering sustained demand increasingly vital for the continuation of the rally.

A SoSoValue snapshot from September 24 revealed that the 12 US Bitcoin spot ETFs held $108.92 billion in net assets, with cumulative net inflows reaching $57.43 billion.

Ethereum Captures the Majority of Non-Bitcoin Inflows

Ethereum has emerged as the primary beneficiary of the broadening ETF demand.

US spot Ethereum ETFs attracted $602.94 million from Monday through Thursday, per SoSoValue data, accounting for over three-quarters of all capital allocated to non-Bitcoin products.

The funds absorbed $269.98 million on Monday, followed by $162.31 million on Tuesday, $104.63 million on Wednesday, and $66.01 million on Thursday. This gave Ethereum four consecutive days of positive inflows, running parallel to Bitcoin’s performance.

Bitfinex reported that Monday’s $270 million inflow represented Ethereum ETFs’ largest daily total since October 7, 2025. This demand materialized even as ETH’s price performance trailed several smaller cryptocurrencies during the broader market rebound.

By September 24, cumulative net inflows into the 11 Ethereum ETFs tracked by SoSoValue had reached $13.85 billion, with combined net assets totaling $17.70 billion.

Consequently, Bitcoin and Ethereum together absorbed approximately $2.85 billion, representing nearly 94% of the combined inflows across the five assets this week.

Solana, XRP, and Zcash Attract Nearly $190 Million

While flows into smaller crypto ETFs were modest compared to Bitcoin and Ethereum, they broadened the week’s buying activity across the broader market.

Solana-based products attracted $101.55 million from Monday through Thursday, per SoSoValue, including $32.81 million on Thursday. These inflows elevated their cumulative total to $1.52 billion, with net assets reaching $1.81 billion.

XRP ETFs added $52.95 million over the same period. Flows resumed on Tuesday with $20.02 million, followed by $18.04 million on Wednesday and $14.89 million on Thursday, bringing cumulative inflows to $1.77 billion against approximately $1.70 billion in net assets.

Zcash products drew an additional $35.17 million this week. SoSoValue data shows the single tracked fund at $306.12 million in cumulative net inflows and approximately $1 billion in net assets. This milestone highlights a rapid accumulation of assets for a product that only began trading earlier in the month.

Combined, Solana, XRP, and Zcash attracted approximately $189.7 million this week. Including Ethereum, non-Bitcoin products brought in roughly $792.6 million, representing about 26% of total inflows across the five assets.

The broader ETF buying coincided with stronger performance across the rest of the crypto market. Bitfinex reported that all 35 non-Bitcoin pairs it tracked advanced between September 18 and September 22, posting a median gain of 12% compared to Bitcoin’s 6.6% rise. Furthermore, its altcoin-season indicator turned positive on September 22 for the first time since January.

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