Bitcoin spot ETF experiences 6 consecutive weeks of net inflows: institutions accumulating, but BTC price diverging?

The capital inflow pace of the US Bitcoin spot ETF is changing. According to SoSoValue data, during the week from May 4 to 8, 2026, the total net inflow into Bitcoin spot ETFs was $623 million, marking the sixth consecutive week of positive inflows. These six weeks have accumulated approximately $3.4 billion, the longest continuous inflow cycle since August 2025.

However, capital inflows are not a smooth straight line. Last Thursday and Friday, Bitcoin spot ETFs recorded net outflows for two consecutive trading days, totaling about $415 million, with approximately $277 million flowing out on Thursday and about $146 million on Friday. Nevertheless, thanks to strong inflows from Monday to Wednesday, the total net inflow for the week still reached $622.75 million.

On the Ethereum spot ETF front, last week saw a total net inflow of $70.49 million; XRP spot ETFs saw a total net inflow of $34.21 million last week. As of the data reporting date, the cumulative net inflow into Bitcoin spot ETFs has reached $59.34 billion, with total assets under management (AUM) at $106.61 billion, and the net asset ratio (relative to total BTC market cap) at 6.67%.

Why does Bitcoin price remain range-bound around $80k despite six weeks of net inflows exceeding $2.3 billion?

The reason Bitcoin can maintain a prolonged sideways movement near $80k instead of breaking upward first requires distinguishing the actual composition of current ETF capital. ETF inflows consist of two types: incremental fiat capital and reallocation of existing funds.

When products like GBTC experience net outflows, some funds are simply shifting between different ETF products, not creating substantial fiat buying pressure in the spot market. For example, last week GBTC had net outflows of about $80k, much of which may have moved into other ETFs. This means that even if overall ETF inflows are positive, their initial impact on spot prices is partially offset.

Under the current market structure, the ETF capital flow mechanism creates a three-layer transmission delay between fund flows and spot prices: first, after raising funds, authorized participants (APs) buy BTC spot in the secondary market; second, market makers and arbitrageurs absorb some initial buying pressure before it translates into price movement; third, some institutions use algorithms like TWAP (Time-Weighted Average Price) or VWAP (Volume-Weighted Average Price) to build positions in batches over days or weeks, smoothing market price reactions.

Do short-term capital withdrawals and medium-term continuous inflows indicate differing institutional strategies?

Weekly data also reveal noteworthy internal structural changes. From May 7 to 8, 2026, US Bitcoin spot ETFs experienced net outflows for two days, totaling about $415 million. Fidelity’s FBTC and BlackRock’s IBIT were the main outflow sources. Meanwhile, Morgan Stanley’s MSBT product continued to see net inflows during these two days, contrary to the trend.

This divergence highlights a key fact: institutional capital is not monolithic. Different managers have varying pacing for positions, risk management frameworks, and asset allocation ratios. The short-term pullback may be driven by macro events—such as the release of US CPI data in May 2026 and the upcoming Senate final review of the CLARITY Act—prompting some institutions to reduce positions ahead of key macroeconomic milestones. Meanwhile, others focused on long-term allocations are leveraging short-term volatility to add more positions.

From a weekly perspective, the ongoing tug-of-war between bullish and bearish institutional flows has not altered the six-week streak of net inflows. The outflow of about $146 million last Friday, relative to the total inflow of $622.75 million for the week, accounts for roughly 23%, remaining within a reasonable fluctuation range.

IBIT’s weekly inflow of $596 million accelerates the trend of market share concentration in ETFs

The trend of market share concentration within ETF products warrants special attention. Last week, BlackRock’s IBIT was the largest net inflow recipient, with a weekly inflow of $596 million, accounting for about 96% of the total weekly inflow. The cumulative net inflow into IBIT has reached $66.1 billion, holding approximately 812,000 BTC.

This data confirms a trend observed since the first quarter of 2026. During that quarter, IBIT experienced net inflows on 48 out of 62 trading days, totaling about $8.4 billion. By the end of March, IBIT accounted for roughly 60% of the assets in the US Bitcoin spot ETF category. In April, IBIT further captured over 70% of the total inflows for the month.

The direct consequence of market share concentration is that IBIT almost determines the overall capital flow pattern of Bitcoin ETFs. When IBIT experiences outflows, the overall data quickly turn negative. This concentration introduces a certain structural fragility into the market. However, on the flip side, as the world’s largest asset manager, BlackRock’s ongoing buying behavior constitutes a stable and predictable demand constant in the Bitcoin spot market.

Weekly capital flow analysis of Ethereum and XRP ETFs: Is capital rotation underway?

While Bitcoin ETFs lead, inflows into Ethereum and XRP ETFs are also gradually rising.

Ethereum spot ETFs saw a total net inflow of $70.49 million last week. Among them, BlackRock’s ETHA recorded a weekly net inflow of $100 million, making it the largest positive inflow. Notably, Ethereum ETFs reversed their capital outflow trend in April, ending nearly five months of continuous outflows, with about $356 million net inflow that month. However, Ethereum’s price did not reflect this improvement, partly because ETH’s risk exposure is closer to high-beta assets—more prone to sell-offs during increased market volatility.

SOL spot ETFs saw a weekly net inflow of $39.23 million, indicating investors are beginning to diversify from Bitcoin into other assets.

XRP spot ETFs experienced a weekly net inflow of $34.21 million, more than doubling the previous week’s approximately $15 million. Daily inflows into XRP ETFs last week showed an increasing trend: nearly $4 million on Monday, over $11 million on Tuesday, $13 million on Wednesday, $6 million on Friday, with positive inflows on four days. The drivers include JPMorgan, Mastercard, and Ripple’s successful testing of cross-platform tokenized US Treasury settlement on the XRP Ledger, providing regulatory validation for institutional participation.

The core conclusion from these multi-asset ETF data is: Institutional demand for crypto assets is expanding from “Bitcoin-only” to multi-asset frameworks, but Bitcoin still dominates, accounting for about 90%.

The deeper logic behind the disconnect between capital inflows and price: What is market structure experiencing?

The divergence between continuous ETF capital inflows and Bitcoin’s sideways price movement is not market “failure,” but a reflection of profound structural change.

First layer: “Silent absorption” on the supply side. Bitcoin exchange reserves have fallen to about 2.2 million BTC, the lowest in seven years, compared to over 3.2 million BTC in 2023—a withdrawal of nearly 1 million BTC from market liquidity. The pace at which institutions absorb BTC exceeds the new supply from miners by over 500%. These supplies have not disappeared but have shifted into ETFs, corporate balance sheets, and long-term holders’ addresses—transforming from “liquid supply” to “static reserves.” This explains why prices haven’t dropped sharply but also why they haven’t broken upward.

Second layer: Transparency of market maker hedging mechanisms. Unlike during the initial launch of Bitcoin ETFs in 2024, current high-frequency market makers have fully absorbed the ETF inflow pricing patterns. When ETF data shows net inflows, market makers hedge in advance via futures short positions to lock in arbitrage profits. This hedging “smooths” the immediate price impact of ETF buying, pushing the price response into a longer-term supply-demand evolution.

Third layer: “Expected discounting” over time. Market expectations of ETF inflows have already been partially priced in. Six consecutive weeks of inflows is a recognized trend; the real catalysts for price moves are “unexpected” large inflows (e.g., weekly surpassing $1 billion) or macro signals like explicit easing of monetary policy.

Cumulative net inflows approaching $60 billion, ETFs becoming the core pricing mechanism in Bitcoin market

As of last week, the cumulative net inflow into Bitcoin spot ETFs has reached $59.34 billion, nearing $60 billion. This signals clearly: ETFs are no longer peripheral players but the main channel for institutional capital entering the Bitcoin ecosystem.

In terms of assets, the total net asset value of US Bitcoin spot ETFs is about $106.61 billion, with a net asset ratio of 6.67%, meaning that the BTC held via ETFs accounts for roughly 6.7% of the circulating supply.

Looking back over a longer horizon, the trend of Bitcoin ETFs in Q1 2026 contrasts sharply with physical gold ETFs: in March, global gold ETFs experienced a record monthly outflow of about $12 billion, while Bitcoin ETFs ended four consecutive months of net outflows, turning positive in inflows.

ETF accumulation is reshaping Bitcoin’s supply-demand structure. During market sell-offs, ETFs act as natural “liquidity absorbers,” mechanically and algorithmically taking on selling pressure. This explains Bitcoin’s current price resilience—$80k has become a new “floor” in this context.

Summary

Bitcoin spot ETFs have seen six consecutive weeks of net inflows totaling $2.37 billion, with cumulative inflows approaching $60 billion—clear signals of an intensifying institutional wave. However, inflows have not directly triggered price increases, due to the combined effects of fund composition (fiat capital vs. reallocation), market structure (supply absorption and market maker hedging), and expectation discounting.

Ethereum ETF inflows have turned positive, and XRP ETF weekly inflows doubled to $34 million, indicating that institutional asset allocation is expanding from “Bitcoin-only” to multi-asset strategies, though Bitcoin remains dominant (about 90%). IBIT’s market share continues to concentrate around 60%, with BlackRock’s influence growing. When institutional allocations reach current scales and depth, the question shifts from “Should I buy?” to “When will it break out?”

FAQ

Q: What is the total amount of net inflow into Bitcoin spot ETFs over six weeks?

According to SoSoValue data, since early April, US Bitcoin spot ETFs have achieved six consecutive weeks of net inflows, totaling about $3.4 billion.

Q: Which Bitcoin ETF product attracted the most capital last week?

Last week, BlackRock’s IBIT led with a weekly net inflow of $596 million, accounting for about 96% of total weekly inflows.

Q: How do Ethereum and XRP ETF inflows compare?

Ethereum spot ETFs saw a weekly net inflow of $70.49 million; XRP spot ETFs saw $34.21 million, more than doubling the previous week’s inflow.

Q: Why do ETF inflows not lead to significant Bitcoin price increases?

Main reasons include: 1) some funds are reallocated among products without creating substantial fiat buying; 2) market makers hedge via futures in advance, smoothing price impact; 3) the market has partially priced in the trend of continuous inflows.

Q: How much market share does IBIT hold in the Bitcoin ETF space?

As of Q1 2026, IBIT holds about 812,000 BTC, roughly 60% of the assets in US Bitcoin spot ETFs.

Q: What is the current cumulative net inflow into Bitcoin spot ETFs?

As of May 11, 2026, the cumulative net inflow is approximately $59.34 billion, with total assets valued at $106.61 billion.