The landscape for spot Bitcoin exchange-traded funds (ETFs) in the U.S. shifted positively in the week ending March 21, as they recorded their first net inflows in over a month.
Bitcoin ETFs Experience Strongest Inflows in Weeks
Bitcoin ETFs saw an impressive net inflow of $744.4 million, marking their most substantial gain in the past eight weeks. This surge also extended their consecutive daily inflows to six days, according to data from SoSoValue.
Five different ETFs contributed to this upswing, with BlackRock’s iShares Bitcoin Trust (IBIT) leading the charge by pulling in $537.5 million. Fidelity’s Wise Origin Bitcoin Fund (FBTC) followed, attracting $136.5 million.
These renewed investments come after a bearish phase that gripped both the cryptocurrency sector and the broader financial markets. Economic uncertainty, heightened trade tensions, and recession fears had previously weighed down investor sentiment.
At the beginning of the year, Bitcoin ETFs saw their strongest inflows of 2025, with $1.96 billion entering the market during the week of Jan. 17, followed by another $1.76 billion the following week. The price of Bitcoin soared to an all-time high of $109,000 on Jan. 20, coinciding with the inauguration of U.S. President Donald Trump.
Following this peak, Bitcoin corrected to the $78,000 range amid a broader market downturn. However, with the latest surge in ETF investments—the most significant since January—the cryptocurrency has rebounded, trading at $87,343 at the time of writing, according to CoinGecko.
Ethereum ETFs Face Continued Outflows
While Bitcoin is seeing renewed confidence, Ethereum ETFs remain in a downtrend. Ether-focused funds recorded their fourth consecutive week of net outflows, totaling $102.9 million in the week ending March 21.
BlackRock’s iShares Ethereum Trust ETF (ETHA) was responsible for the majority of these losses, with $74 million exiting the fund. Despite the downward trend, Ether has managed to recover slightly, trading at $2,090 after briefly falling below $2,000—a level it had not seen in over a year.
Institutional Interest in Ethereum Remains Strong
Despite ongoing outflows, institutional investors continue to expand their exposure to Ethereum. BlackRock’s BUIDL fund, which focuses on tokenized real-world assets (RWAs), now holds a record $1.15 billion worth of ETH, up from approximately $990 million the previous week, as per Token Terminal data. This increase suggests that major financial players see long-term value in Ethereum’s role as a foundational infrastructure for asset tokenization.
Market Sentiment Improves, but Uncertainty Lingers
Investor sentiment in the crypto space has improved over the past week, with the Crypto Fear & Greed Index rising from 32% to 45%.
However, market analysts remain cautious. Singapore-based investment firm QCP Capital warned that upcoming tariff escalations, set for April 2, could introduce fresh pressure on risk assets, potentially reversing recent gains.
While Bitcoin ETFs appear to have regained momentum, Ethereum continues to face challenges. Whether these trends will persist remains to be seen as market participants closely monitor global economic developments and regulatory shifts.
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