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Bitcoin ETF interest abound as BlackRock fund has record day

Reported by Blockworks
Mar 16, 2026· 3 min read
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Key Takeaways
  • • BlackRock's iShares Bitcoin Trust (IBIT) recorded its highest-ever single-day trading volume at $10.7 billion, surpassing the previous record set on its launch day nearly seven weeks prior, signaling robust institutional demand for spot Bitcoin exposure.
  • • IBIT has accumulated $3 billion in recent net inflows and ranks in the top 1% of all ETFs by flow volume, with Bloomberg ETF analyst Eric Balchunas noting that Bitcoin ETF flows have turned positive across every rolling period tracked for the first time in months.
  • • The 12 spot Bitcoin ETFs collectively recorded $335.8 million in net inflows on a single day (April 22), with IBIT capturing $246.9 million, demonstrating continued market dominance and renewed institutional appetite as Bitcoin trades near $77,700.
  • • IBIT has generated $244.5 million in annualized revenue in its first year of operation—the highest revenue-generating BlackRock ETF to date—and maintains $63 billion in net assets, reflecting exceptional market penetration.
  • • Cumulative lifetime net inflows across all spot Bitcoin ETFs have reached $62.8 billion, with additional competitive products launching in 2026, including Morgan Stanley's MSBT ($139 million in assets within nine days) and GSR's actively managed Crypto Core3 ETF (BESO).
Summary
BlackRock's iShares Bitcoin Trust (IBIT) achieved a record trading day with $10.7 billion in volume and approximately $900 million in options premiums, eclipsing its previous high set during its launch period. The milestone reflects accelerating institutional participation in cryptocurrency markets and underscores the dominant position IBIT has established since its introduction as the first spot Bitcoin ETF approved by U.S. regulators.

Bitcoin ETF flows have shifted decisively positive across all tracked rolling periods, marking the first such alignment in months. IBIT has captured $3 billion in recent inflows, placing it in the top 1% of all exchange-traded funds by flow volume—a distinction that reflects both its liquidity and appeal to institutional capital. According to Bloomberg ETF analyst Eric Balchunas, this turnaround signals renewed confidence in Bitcoin as a mainstream asset class, with the broader spot Bitcoin ETF ecosystem recording $335.8 million in daily inflows on April 22 alone, of which IBIT accounted for $246.9 million.

The product's commercial success has been extraordinary by industry standards. IBIT generated $244.5 million in annualized revenue in its inaugural year—higher than any other BlackRock ETF—and currently manages $63 billion in net assets. The weekly inflows data further demonstrates momentum: the week ending April 17 saw combined spot Bitcoin and Ethereum ETFs accumulate $1.37 billion in net inflows, the largest weekly total since January 2026. Cumulative lifetime flows across the 12 spot Bitcoin ETFs have reached $62.8 billion.

New entrants are intensifying competition in the space. Morgan Stanley launched its spot Bitcoin ETF (MSBT) with a competitive 0.14% fee structure and accumulated $139 million in assets within nine days. GSR introduced the actively managed Crypto Core3 ETF (BESO) on April 22, offering diversified exposure to Bitcoin, Ethereum, and Solana with integrated staking rewards. Despite this competitive landscape, IBIT maintains clear market leadership, and the positive flow dynamics suggest the institutional adoption trend remains intact as Bitcoin prices stabilized near $77,700.

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Sources

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Blockworks Bitcoin ETF interest abound as BlackRock fund has record day