Spot Bitcoin ETFs Sees $199M Inflow, Longest Streak in Five Months

U.S. spot bitcoin exchange-traded funds (ETFs) extended their streak of daily inflows to seven days on March 17, totaling approximately $199 million. Notably, this marks the longest consecutive run of positive flows for these products in the past five months.

Breaking down the activity, BlackRock’s iShares Bitcoin Trust (IBIT) led the inflows with around $169 million. Fidelity’s Wise Origin Bitcoin Fund (FBTC) contributed roughly $24 million. These major funds accounted for the bulk of the activity, reflecting concentrated institutional demand.

Bitcoin ETFs See Sustained Multi-Day Inflows

The seven-day streak follows a prior six-day run as of March 16, highlighting a sustained recovery in investor interest. Analysts tracking the flows noted that such multi-day accumulation has not been observed since at least October 2025.

Cumulative net inflows since March 9 have now surpassed $1 billion. During the same period, bitcoin’s price rose more than 12%, climbing from lows near $63,000 to roughly $73,000–$75,000.

This rally coincided with improving macroeconomic conditions, including stabilizing oil prices and expectations for adjustments in Federal Reserve policy. Market watchers say these factors may have contributed to renewed confidence among larger funds.

While major institutions continued adding thousands of BTC to their holdings, smaller funds experienced minor outflows or flat activity on some days. Assets under management in U.S. spot bitcoin ETFs now exceed tens of billions, with cumulative inflows exceeding $56 billion.

These trends highlight the scale of institutional participation. Total net assets in these ETFs are near $97 billion, representing roughly 6.5% of the bitcoin market, indicating ongoing engagement despite volatility earlier in 2026.

Altcoin ETFs Follow Bitcoin With Steady Gains

Other crypto ETFs also recorded inflows on March 17, though at lower levels than Bitcoin. Spot Ethereum ETFs added $138.3 million for a sixth consecutive day.

For context, BlackRock’s ETHA led with $82 million, while its staked ether ETF (ETHB) saw $67 million in inflows. Grayscale added $25 million across its two Ethereum funds. However, not all Ethereum ETFs gained, as Fidelity’s FETH experienced a $35 million outflow.

Other altcoin-focused ETFs also saw modest inflows. Solana ETFs recorded $17.8 million, while XRP ETFs added $4.6 million.

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