Last week saw divergent fund flows in crypto spot ETFs: Bitcoin spot ETFs posted a net inflow of $6.21 million overall, with BlackRock's IBIT attracting $121 million in a single week; Ethereum spot ETFs saw a net outflow of $140 million, ending four consecutive weeks of inflows, with BlackRock's ETHA recording the largest outflow.
The latest weekly data shows a clear divergence in crypto spot ETF fund flows. Last week, Bitcoin spot ETFs still recorded net inflows overall, but the total was only $6.21 million. During the same period, Ethereum spot ETFs saw net outflows of $140 million, ending their previous four-week streak of inflows. Within both asset classes, capital concentrating into or out of leading products was a common feature. Among them, BlackRock's Bitcoin spot ETF IBIT attracted $121 million in a single week, while BlackRock's Ethereum spot ETF ETHA recorded the largest outflow among Ethereum products. This set of data directly reflects the short-term divergence in institutional capital allocation between Bitcoin and Ethereum, and is one of the most notable ETF fund flow signals this week.
From the perspective of the institutions and products involved, this round of fund flow divergence centered mainly on leading asset managers such as BlackRock and Fidelity. In Bitcoin spot ETFs, BlackRock's IBIT saw net inflows of $121 million for the week, while Fidelity's FBTC also saw inflows of nearly $80 million. Against the backdrop of an overall net inflow of only $6.21 million, the combined inflow of these two leading products clearly exceeded the overall net inflow, indicating that other Bitcoin spot ETF products may have recorded net outflows or only minor inflows over the same period. On the Ethereum spot ETF front, BlackRock's ETHA saw the largest outflow, becoming one of the main products dragging the overall Ethereum spot ETF into net outflow territory. The opposite fund flow directions between the same asset manager's Bitcoin and Ethereum products highlight the structural adjustment currently taking place among institutional capital across crypto assets.
Specifically, Bitcoin spot ETFs saw limited overall net inflows, but the leading products showed notable capital attraction. Last week, the total net inflow for Bitcoin spot ETFs was only $6.21 million, indicating little change in total scale. However, BlackRock's IBIT recorded net inflows of $121 million for the week, and Fidelity's FBTC also saw inflows of nearly $80 million. Leading products attracted substantial capital while overall net inflows remained low, suggesting a clear trend of capital concentrating into top-tier ETF products. Structurally, products from BlackRock and Fidelity were the main beneficiaries. Since the combined inflows of these two products significantly exceeded the overall net inflow, it can be inferred that other Bitcoin spot ETFs experienced outflows or weak inflows during the period, thereby lowering the total net inflow. This structural disparity is an important reference for judging the main direction of institutional capital allocation in Bitcoin.
Unlike Bitcoin ETFs, which still maintained slight net inflows, Ethereum spot ETFs ended a four-week streak of continuous inflows. Last week, Ethereum spot ETFs recorded net outflows of $140 million, with BlackRock's ETHA seeing the largest outflow. The previous four-week inflow trend was thus interrupted, reflecting a shift in institutional sentiment toward ETH over the short term. The end of consecutive inflows suggests that some institutional capital that had entered Ethereum through spot ETFs has now retreated. With only single-week data disclosed so far, it is difficult for the market to determine whether this change reflects short-term subscription and redemption fluctuations or marks the starting point of a more sustained adjustment in institutional willingness to allocate to Ethereum. Fund flow direction over the coming weeks will be key to assessing whether this trend continues.
When placing Bitcoin and Ethereum spot ETF data side by side, the divergence in capital sentiment becomes even clearer. Bitcoin spot ETFs remained in net inflow overall, albeit at just $6.21 million, but inflows into BlackRock's IBIT and Fidelity's FBTC indicate that some institutions are still increasing their Bitcoin allocations. Ethereum spot ETFs, by contrast, saw net outflows of $140 million, with the largest outflow occurring in BlackRock's ETHA. Both involve products from leading asset managers, yet the fund flow directions are opposite. This divergence may reflect institutional rebalancing between the two asset classes, or it may be related to differences in subscription and redemption rhythms and investor structures across products. Given the weekly nature of the data, it is not sufficient to judge longer-term trends, but the short-term directional difference is already clear enough.
Against the technical and institutional backdrop, Galaxy's Head of Research Alex Thorn noted that BTC's weekly close has risen above the 50-week moving average for the first time in 45 weeks, historically a strong signal that a bear market bottom has been established. This view offers another dimension for observing the current technical structure of the Bitcoin market. With Bitcoin spot ETFs still seeing net inflows overall and strong capital uptake in leading products, technical signals and institutional fund flows are to some extent aligning. However, ETF fund flows focus more on short-term subscription and redemption behavior, while technical indicators reflect medium- to long-term changes in price trends, and the two should not be simply equated. Combining both can help the market gain a more comprehensive understanding of where Bitcoin currently stands.
The institutional signals embedded in fund flow data deserve attention. On the Bitcoin ETF side, overall net inflows were only $6.21 million, but leading products attracted strong inflows, indicating that institutional allocations favor large products with stronger liquidity and brand advantages. On the Ethereum ETF side, net outflows reached $140 million with BlackRock's ETHA recording the largest outflow, showing that the previous four-week inflow streak could not be sustained. For market participants, ETF fund flows are not the sole determinant of price movements, but they are an important gauge of changes in institutional demand. Especially with both Bitcoin and Ethereum spot ETFs now available, the migration of capital between these two product categories serves as a key reference for observing the moves of major market players. The current data highlights divergence rather than one-way inflows or outflows.
Capital concentration has become another key observation point. Looking at Bitcoin ETF data, BlackRock's IBIT saw $121 million in weekly inflows and Fidelity's FBTC saw nearly $80 million, in sharp contrast to the overall net inflow of just $6.21 million, indicating a high degree of capital concentration. This structure means that while monitoring aggregate data, it is equally important to track fund changes in leading products. On the Ethereum ETF side, BlackRock's ETHA recorded the largest outflow, showing that leading products also have a significant impact on the overall direction. If capital continues to concentrate in a small number of products going forward, the structural differences in the ETF market may widen further, and the divergence in institutional product selection will become more pronounced. Even products under the same brand can show completely different fund flow directions, adding further complexity to data interpretation.
Going forward, key attention should be paid to whether next week's spot ETF fund flow data maintains the current pattern. For Bitcoin spot ETFs, observers should watch whether overall net inflows can expand or whether they remain dependent on leading products such as BlackRock's IBIT and Fidelity's FBTC. For Ethereum spot ETFs, attention should focus on whether net outflows persist and whether fund flows in BlackRock's ETHA reverse. At the same time, whether overall capital concentration further increases will also be crucial for judging institutional allocation preferences. If Bitcoin ETF net inflows continue to be driven solely by leading products over the long term, while Ethereum ETFs keep seeing outflows, the difference in market demand for the two asset classes may become more evident. These assessments still require validation from more weekly data, and for now the market should maintain objective tracking of fund flow figures and avoid overinterpreting single-week changes.
