Institutional crypto ETF flows accelerated sharply over March 10–11, with net inflows rocketing from $97 million to $242 million — a 149% increase, according to COINTURK on March 12, 2026. Bitcoin ETFs were the primary driver, while Ethereum ETFs rebounded after a day of heavy outflows. Altcoin ETFs mostly recorded net outflows or no movement.
Bitcoin ETFs Absorb Over $400 Million in Two Days
On March 10, Bitcoin ETFs purchased 2,530 BTC valued at $167.1 million. The next day, buying intensified to 3,610 BTC ($246.9 million). Cumulative acquisitions of 6,140 BTC represent nearly eight days of new Bitcoin supply. BlackRock and Fidelity led the charge — BlackRock alone boosted daily purchases from 1,660 BTC to 2,720 BTC, signaling sustained institutional confidence in Bitcoin as a portfolio anchor within regulated vehicles.
Ethereum ETFs Swing From Massive Outflow to Inflow
Ethereum ETFs saw a dramatic reversal. On March 10, net outflows totaled 26,498 ETH (~$51.3 million). The next day, inflows reached 6,325 ETH (~$12.6 million). The rebound suggests that major allocators like BlackRock and Fidelity adjusted short-term portfolio rebalancing and tactical positions. While Ethereum’s role in institutional holdings remains smaller than Bitcoin’s, its centrality in blockchain infrastructure and DeFi ecosystems keeps it a key component of diversified crypto ETFs.
Altcoin ETFs: Minimal Participation, Selective Flows
Altcoin ETFs recorded scant activity. Solana saw net outflows of 30,649 SOL on March 10; XRP registered net withdrawals of $18.11 million. Chainlink logged inflows of roughly $2 million, and Hedera added about $655,000 on March 11. Dogecoin, Litecoin, Avalanche, Polkadot, and further Chainlink saw zero net movement. This pattern highlights institutions prioritizing liquid, well-established assets, leaving most altcoins as marginal allocations sidelined from ETF-driven demand.
The two-day ETF flow data show institutional investors increasingly steering the broader crypto market’s direction and liquidity, while maintaining a conservative strategy focused on large-cap, established assets.