Investment in cryptocurrency funds surged last week, with a total of $3.2 billion in inflows—the sector’s largest single-week intake since October 2025. The Kobeissi Letter, a research firm monitoring financial markets and fund flows, reported that both crypto and gold funds experienced significant simultaneous investor interest.
BlackRock’s IBIT fund leads inflows
BlackRock’s IBIT, a spot Bitcoin ETF, was the standout, attracting $928 million in new capital last week alone. This followed the previous week’s $1.3 billion influx, pushing its two-week net intake above $2.2 billion.
Other major cryptocurrencies also drew steady investment. Funds centered on Ethereum, Solana, XRP, Hyperliquid, and Dogecoin maintained ongoing inflow streaks, indicating sustained interest beyond Bitcoin.
Crypto funds averaged $1.3 billion in inflows each week for the last four weeks, maintaining the strongest pace the sector has seen in roughly ten months.
Consistent momentum for crypto funds
The four-week rolling average for crypto fund inflows has now reached $1.3 billion per week, marking a persistent and robust period of capital movement into digital assets. Since late summer, this steady trajectory has signaled continued investor confidence rather than a one-off spike.
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AAPLDespite the strong overall performance, there were subtle shifts within the asset class. The latest figures indicate that some capital may be rotating away from Bitcoin ETFs toward alternative cryptocurrencies.
Shift from Bitcoin toward altcoins
US-based Bitcoin funds, which had enjoyed a nine-day streak of consecutive inflows, experienced $202 million in outflows last week. Even so, the net result for the week showed Bitcoin funds still pulled in $925 million, with IBIT contributing $938 million during the period.
| Fund/Asset | Weekly Inflow | Streak or recent activity |
|---|---|---|
| BlackRock’s IBIT (Bitcoin ETF) | $928 million | $1.3 billion in prior week |
| Bitcoin (all funds) | $925 million | 9-day inflow streak ended |
| Ethereum | $824 million | 10 straight days of inflows |
| Solana/XRP/Hyperliquid/Dogecoin | Figures not given | Inflows continued |
Ethereum-focused funds posted $824 million in weekly inflows, with a notable $102 million arriving on August 28. This extended Ethereum’s inflow streak to 10 consecutive sessions. Funds targeting Solana and XRP, along with newer options like Hyperliquid and Dogecoin, also saw continued investment activity.
This rotation has led some analysts to propose that investors are diversifying away from Bitcoin and into altcoins, especially as the “September effect”—a known period of volatility—approaches in crypto markets.
Scott Melker, an analyst and trader known as “The Wolf of All Streets,” observed that current flows represent a shift rather than an overall retreat from the asset class. He stated, “The bid rotated. It did not reverse.”
US Bitcoin ETFs ended a nine-day inflow streak but still brought in $925 million overall for the week, with BlackRock’s IBIT alone attracting $938 million during that stretch.
Recent patterns highlight that inflows continue to span a broad range of digital assets. Aggregate data show steady investments not only in Bitcoin and Ethereum but also in Solana, XRP, Hyperliquid, and Dogecoin-focused products.
As August transitions into September, analysts are watching to see whether this trend of rotation toward altcoins persists and how overall crypto market sentiment evolves alongside these fund flows.
Mini dictionary: The Kobeissi Letter is an independent financial markets research firm that publishes analysis, commentary, and fund flow data focused on macroeconomic trends and digital assets.
