BlackRock leads the Bitcoin ETF market, attracting $600 million in a single week

From March 9 to 13, the total net inflow into U.S. spot Bitcoin ETFs reached $767 million, marking the first consecutive daily inflows during a full trading week in 2026. Among them, BlackRock’s iShares Bitcoin Trust (IBIT) led with a weekly inflow of $600.1 million.

BlackRock IBIT’s Dominance: Market Concentration Analysis

(Source: SoSoValue)

According to data from SoSoValue, IBIT’s weekly inflow not only dominates the Bitcoin ETF market but also holds an overwhelming position within the entire crypto ETF ecosystem:

IBIT Inflow: $600.1 million, accounting for over 78% of total Bitcoin ETF inflows

Grayscale GBTC: Net outflow of $25.9 million, continuing its role as the largest seller

Consecutive Daily Inflows: For the first time in 2026, five consecutive days of positive inflow, indicating that institutional sentiment is gradually recovering from recent pressures

Arkham Intelligence’s on-chain tracking confirms that IBIT’s ongoing absorption of mined Bitcoin further consolidates BlackRock’s position as “the largest institutional buyer of Bitcoin through regulated products.” This concentration suggests that, at the institutional level of crypto ETFs, BlackRock’s capital movements have become a key leading indicator of Bitcoin’s short-term trend.

Ethereum and Solana ETFs: Early Signs of Institutional Diversification

(Source: Arkham)

BlackRock’s dominance in Bitcoin has not prevented other assets from gaining institutional attention. This week, various asset ETFs showed different degrees of positive capital inflows:

Ethereum Spot ETF: Total net inflow of $160.9 million; Fidelity’s FETH led with $90.1 million, while Grayscale’s ETHE experienced an outflow of $13.4 million

Solana Spot ETF: Weekly net inflow of $10.7 million. Although relatively small, analysts see this as an early sign that institutions are beginning to diversify into higher-risk crypto assets

Overall Capital Pattern: Bitcoin remains the core asset, but the synchronized positive inflows into Ethereum and Solana indicate that institutional allocation is expanding from flagship assets to a broader crypto portfolio

XRP ETF’s Reversal: Temporary Rotation or Attitude Shift?

Amid positive inflows for Bitcoin, Ethereum, and Solana, the reverse performance of XRP spot ETF stands out. A net outflow of $28.07 million this week makes XRP ETF the only major crypto ETF category experiencing institutional redemptions, continuing the pressure since March.

From cumulative data, since its listing in November 2025, XRP ETF has accumulated over $1.2 billion in inflows, demonstrating that the institutional base built over recent months still exists. However, the ongoing outflows raise key market questions: Is this a capital rotation during Bitcoin’s rebound (shifting funds from XRP back to BTC to chase momentum), or does it reflect a deeper reassessment by some institutions of XRP’s long-term allocation logic?

This question remains uncertain until late March data is available, but its trajectory will directly influence market perceptions of XRP ETF’s future momentum.

Frequently Asked Questions

Q: Does BlackRock IBIT’s dominance in Bitcoin ETF inflows indicate high market concentration risk?
IBIT accounting for over 78% of weekly inflows indeed reflects high institutional concentration. From liquidity and trust perspectives, this shows strong preference among large institutions for BlackRock products; however, if market conditions shift, rapid fund movements out of IBIT could amplify Bitcoin’s price volatility. Analysts generally view BlackRock’s capital flows as a reliable proxy for institutional sentiment rather than a direct price predictor.

Q: Does the outflow from XRP ETF suggest institutions are exiting XRP?
The weekly data does not provide a definitive answer. Short-term ETF capital flows are influenced by multiple factors, including capital rotation (shifting to Bitcoin for stronger rebound momentum), cyclical portfolio rebalancing, and macro market sentiment. The over $1.2 billion in cumulative inflows into XRP ETF indicates a substantial institutional base remains. The recent outflows are more likely rotations rather than fundamental exits, but upcoming weekly data will be more conclusive.

Q: Does the $10.7 million inflow into Solana ETF indicate limited institutional interest in SOL?
Solana’s ETF is relatively new, and institutional adoption is still in early accumulation stages. While $10.7 million is modest compared to Bitcoin and Ethereum, any sustained positive inflow at this early stage is seen as a positive sign of growing institutional attention. As the ETF matures and market recognition increases, future flow trends will provide more meaningful insights.