US Spot Bitcoin ETFs Record Sixth Consecutive Day of Net Positive Inflows

The recent surge in spot Bitcoin ETF inflows has sparked significant attention within the financial community. Over the past six consecutive trading days, US spot Bitcoin exchange-traded funds (ETFs) have attracted substantial amounts of new capital, with a notable $11.83 million entering the market on April 21, 2025.

This trend is indicative of growing institutional and retail adoption of regulated cryptocurrency exposure. The sustained inflow streak suggests a shift beyond speculative trading, with investors increasingly using these products for strategic portfolio allocation. This development has significant implications for the underlying Bitcoin market, as the custodial purchase of BTC by fund issuers directly impacts the spot price.

Breaking down the figures provides deeper insight into this trend. BlackRock's iShares Bitcoin Trust (IBIT) led the pack with a substantial inflow of $39.32 million, reinforcing its position as a dominant force in the spot Bitcoin ETF landscape since its launch. Conversely, Grayscale's Bitcoin Trust (GBTC) experienced an outflow of $17.51 million, which continues a long-observed trend of profit-taking and rotation from the converted fund.

The flow data also highlights a competitive and maturing market where investor preference is actively shaping fund flows. The reduction in GBTC outflow magnitude is a critical development, as initially, the fund saw billions exit as investors locked in profits or moved to lower-fee competitors post-conversion. The simultaneous inflow into Grayscale's new Mini Trust indicates the firm is successfully retaining assets within its product suite.