Bitcoin Spot ETFs See $118M Net Inflow on March 31, SoSoValue Says

U.S. spot Bitcoin ETFs recorded a combined net inflow of $118 million on March 31 (Eastern Time), according to SoSoValue data. The positive session added to a growing cumulative total that now exceeds $56 billion, even as broader market sentiment indicators remained deeply pessimistic.

Bitcoin Spot ETF Inflows Reach $118 Million on March 31

The daily aggregate figure aligns with Farside Investors’ flow table, which recorded $117.5 million in net inflows for the same session. The minor difference reflects rounding between the two data aggregators.

BlackRock’s iShares Bitcoin Trust (IBIT) led all issuers with $98.4 million in net inflows, capturing roughly 84% of the day’s total. Fidelity’s FBTC followed at $16.2 million, while Bitwise’s BITB and ARK 21Shares’ ARKB added $1.8 million and $1.1 million respectively.

The remaining listed spot Bitcoin ETFs were flat on the day, recording neither inflows nor outflows. After the March 31 session, cumulative net inflows across all U.S. spot Bitcoin ETFs reached $56.098 billion, spanning every trading day since the SEC-approved products launched in January 2024.

Why the March 31 ETF Flow Data Matters

Daily net-flow figures from platforms like SoSoValue and Farside have become a standard proxy for gauging institutional appetite for Bitcoin exposure. A positive daily total signals that new money entering the funds outpaced redemptions during that session.

The March 31 inflow arrived on a day when Bitcoin traded at $69,121, up 2.48% over the prior 24 hours. That price level placed BTC’s total market capitalization near $1.38 trillion with roughly $53.7 billion in daily trading volume.

What stands out is the disconnect between ETF demand and broader sentiment. The Fear and Greed Index sat at 8 out of 100 at the time, a reading classified as Extreme Fear. Positive ETF inflows during a period of extreme pessimism can indicate that institutional allocators are positioning differently than retail-driven sentiment gauges suggest.

That institutional conviction mirrors a wider pattern of large players building positions in crypto infrastructure. Initiatives like BiHelix and Fortuna Group’s Web3 expansion in Bougainville reflect a similar appetite for long-term crypto exposure beyond spot trading.

IBIT’s outsized share of the March 31 inflows is consistent with a pattern that has held since the spot ETF launch. BlackRock’s product has routinely absorbed the majority of daily flows, reflecting its brand recognition, liquidity advantages, and tighter bid-ask spreads relative to smaller competitors.

The concentration of inflows in a single issuer also means that headline ETF flow numbers can be more nuanced than they appear. A day with $118 million in aggregate inflows where four funds contributed and the rest were flat tells a more granular story than the top-line number alone.

Meanwhile, the broader crypto market continues to develop on multiple fronts. On the infrastructure side, proposals like Vitalik Buterin’s fast confirmation rule for Ethereum are pushing network upgrades forward, while exchange-level activity such as Binance’s latest HODLer airdrop for Fabric Protocol highlights continued platform engagement across the sector.

For context, daily ETF flow data captures only one channel of Bitcoin demand. On-chain exchange reserve trends, over-the-counter desk activity, and derivatives positioning all contribute to the broader supply-demand picture. Bitcoin ETFs drew over $2.5 billion in net inflows during March, suggesting the March 31 session was part of a broader pattern of sustained demand rather than an isolated event.

The next meaningful data point will be the April 1 session’s flow figures, which will show whether buying momentum carried into the new quarter.

Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency and digital asset markets carry significant risk. Always do your own research before making decisions.