How Much Bitcoin Does BlackRock Hold 2026: Real Holdings

BlackRock’s iShares Bitcoin Trust (IBIT) holds over 813,953.5 BTC as of May 4, 2026, valued at approximately $65.8 billion, representing 3.876% of the total 21 million bitcoin supply, after roughly 16 months of accumulation since its January 2024 launch.

IBIT added over 31,627 BTC in April alone, more than double the roughly 13,500 BTC that bitcoin miners produced globally during the same month at the post-halving 450 BTC per day rate. The figures below cover IBIT’s full holdings trajectory, the holder rankings IBIT sits inside, the aggregate spot Bitcoin ETF custody footprint, and the single-custodian concentration risk that comes with it.

Key Takeaways

• BlackRock IBIT holds 813,953.5 BTC as of early May 2026, equal to roughly 3.876% of bitcoin’s 21 million maximum supply.
• IBIT crossed 800,000 BTC for the first time on April 22, 2026, after nine consecutive trading days of net inflows.
• Coinbase Custody holds approximately 84% of all US spot Bitcoin ETF assets, around $77 billion, across 9 of 12 spot ETFs.
• All 12 US spot Bitcoin ETFs combined hold approximately 1.29 million BTC, equal to roughly 6.5% of the circulating supply.
• Strategy (formerly MicroStrategy) overtook BlackRock briefly on April 20, 2026, with a 34,164 BTC purchase worth $2.54 billion.
• IBIT’s April 2026 accumulation of 31,627 BTC outpaced global miner issuance of roughly 13,500 BTC that month at the post-halving 3.125 BTC per block rate.

Editor’s Choice

• 813,953.5 BTC: BlackRock IBIT bitcoin holdings as of May 4, 2026.
• $65.8 billion: The approximate market value of IBIT’s bitcoin position at early May 2026 prices.
• 818,334 BTC: Strategy’s holdings as of April 26, 2026, the largest corporate bitcoin treasury.
• 1.096 million BTC: Satoshi Nakamoto’s estimated dormant holdings, the single largest concentration on-chain.
• $77 billion: Total US spot Bitcoin ETF assets held by Coinbase Custody as a single custodian.
• 450 BTC per day, global miner issuance after the April 2024 halving cut block rewards to 3.125 BTC.

Recent Developments

• May 1 to May 4, 2026: IBIT added 3,626.7 BTC across four trading days, lifting the fund’s holdings to 813,953.5 BTC.
• April 27, 2026: Strategy purchased 3,273 BTC for approximately $255 million, reaching 818,334 BTC total.
• April 22, 2026: IBIT bitcoin holdings hit 806,700 BTC worth $63.7 billion, an all-time high for the fund.
• April 20, 2026: Strategy bought 34,164 BTC for $2.54 billion, briefly surpassing BlackRock as the largest institutional bitcoin holder.
• April 2026 (full month): IBIT accumulated approximately 31,627 BTC, including consecutive multi-day inflow streaks.

How Much Bitcoin Does BlackRock IBIT Hold Right Now?

• BlackRock’s iShares Bitcoin Trust holds over 813,953.5 BTC as of May 4, 2026, valued at approximately $65.8 billion, representing 3.876% of the total 21 million bitcoin supply.
• From May 1 to May 4, 2026, IBIT added 3,626.7 BTC in net accumulation.
• The fund accumulated approximately 31,627 BTC during April 2026 through various transactions.
• IBIT recorded a notable single-day addition of 25,286 BTC on October 7, 2025.
• In Arkham’s on-chain entity ranking, BlackRock holds around 799,000 BTC, making it the largest Bitcoin ETF issuer in that ranking.
• IBIT began operations with approximately 2,621 BTC on January 11, 2024.

Source: Bitbo IBIT treasury tracker, Arkham Intelligence on-chain attribution

By the numbers: IBIT’s over 813,953.5 BTC holdings as of May 4, 2026 place a single fund inside the top three bitcoin concentrations on-chain, behind only the dormant Satoshi Nakamoto wallets and Coinbase corporate addresses. The fund built that position in 16 months, faster than any institutional bitcoin accumulator before it.

For background on how spot Bitcoin ETFs sit alongside other crypto vehicles, see CoinLaw’s crypto exchange market share data.

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BlackRock IBIT Bitcoin Accumulation Timeline

• IBIT launched with approximately 2,621 BTC on January 11, 2024.
• The fund accumulated over 813,000 BTC within roughly 16 months of launch.
• IBIT Bitcoin holdings reached 806,700 BTC worth $63.7 billion on April 22, 2026, an all-time high for the fund.
• The 800K milestone followed nine consecutive trading days of net inflows, during which the fund added approximately 21,500 BTC.
• The fund recorded a notable single-day addition of 25,286 BTC on October 7, 2025.
• April 2026 net accumulation totaled approximately 31,627 BTC.

Source: Bitbo IBIT tracker, Yahoo Finance reporting on April 22 milestone

BlackRock vs Strategy: The Largest Bitcoin Holder Battle

• Strategy owned 818,334 BTC as of April 27, 2026, with an average purchase price of $66,384.56 per bitcoin and a total cost of $33.139 billion.
• On April 20, 2026, Strategy bought 34,164 BTC for $2.54 billion, surpassing BlackRock’s iShares Bitcoin Trust to become the largest institutional bitcoin holder.
• Strategy’s Bitcoin reserves account for over 60% of all Bitcoin held by publicly traded companies worldwide.
• Michael Saylor said Strategy purchased 3,273 bitcoin for about $255 million, bringing total holdings to 818,334 BTC as of April 26, 2026.
• Arkham’s on-chain ranking placed Strategy at approximately 781,000 BTC before the late-April purchases. Strategy is the largest public company Bitcoin holder.
• Strategy’s reported 818,334 BTC holdings exceed IBIT’s 813,953.5 BTC by approximately 4,380 BTC, a gap that has shifted week to week with each new ETF inflow or treasury purchase.

Source: Strategy public purchase announcements, Bitbo IBIT tracker

Across crypto exchange market data CoinLaw tracks, two accumulation models now define institutional bitcoin holdings: the ETF wrapper that aggregates many investors into a single fund, and the corporate treasury that converts cash on a balance sheet into bitcoin. Strategy and BlackRock represent the two extremes, and they trade the top spot back and forth based on weekly inflow and purchase data.

How IBIT Ranks Against Other Top Bitcoin Holders

• Satoshi Nakamoto’s estimated 1.096 million BTC is worth around $82 billion at current prices.
• Coinbase holds approximately 976,000 BTC in Arkham’s entity attribution data.
• Binance holds approximately 631,000 BTC in Arkham’s entity attribution data.
• The United States Government ranks as the largest government bitcoin holder, with approximately 328,000 BTC in Arkham’s tracking.
• BlackRock holds approximately 799,000 BTC in Arkham’s on-chain ranking. This sits slightly below the trust’s reported holdings figure, which is consistent with on-chain wallet attribution lag.
• Strategy holds about 781,000 BTC in Arkham’s ranking. Corporate-disclosure totals run ahead of on-chain attribution as new addresses are tagged.

Spot Bitcoin ETF Aggregate Holdings

• The 12 US spot Bitcoin ETFs collectively hold approximately 1.29 million BTC, valued at roughly $93 billion.
• Across all US spot ETFs, between 1.28 and 1.31 million BTC sits in cold custody.
• The aggregate ETF holdings represent roughly 6.5% of bitcoin’s circulating supply of approximately 20 million BTC.
• At the current accumulation pace, spot ETFs could collectively hold 1.8 million BTC by late 2027, representing nearly 10% of bitcoin’s total supply.
• BlackRock’s IBIT leads with approximately 785,000 BTC in the aggregate ETF dataset, followed by Fidelity’s FBTC with approximately 187,000 BTC.
• Bitcoin’s circulating supply was approximately 20,023,521 BTC as of early May 2026, equal to 95% of the 21,000,000 BTC maximum supply.

The context: The roughly 6.5% of circulating bitcoin held in US spot ETF custody sits in cold storage with limited operational mobility. Once a coin enters ETF custody it functions like a long-term holder; redemption requires authorized participant arbitrage.

Coinbase Custody: The Single Point of Failure Risk

• According to Marc Baumann, founder of research firm fiftyonexyz, Coinbase Custody manages approximately 84% of US spot Bitcoin ETF assets, amounting to around $77 billion.
• Coinbase is the custodian for nine of the twelve spot Bitcoin ETFs.
• Fidelity uses its own custody affiliate, Fidelity Digital Assets, while VanEck uses Gemini.
• The concentration has sparked discussions about potential systemic risks and regulatory scrutiny over a single custodian holding the majority of ETF-held bitcoin.
• Applying the approximately 84% Coinbase Custody share to the 1.29 million BTC aggregate ETF total implies roughly 1.08 million BTC sits with a single custodian.
• BlackRock’s IBIT alone holds 813,953.5 BTC.

Source: Phemex News reporting fiftyonexyz analysis, CoinGlass aggregate ETF custody breakdown

Why it matters: Coinbase Custody’s approximately 84% share of US spot Bitcoin ETF assets, around $77 billion, means a single operational disruption against one custodian could affect more bitcoin than any individual exchange failure in crypto’s history. The concentration follows from the spot ETF market consolidating around the most established institutional custodian, but it shifts risk from many points to one.

How IBIT’s Holdings Compare to Bitcoin Miner Issuance

• Bitcoin’s fourth halving on April 20, 2024, cut the block subsidy reward from 6.25 BTC to 3.125 BTC at block height 840,000.
• The halving cut daily issuance from 900 BTC to 450 BTC per day, using the long-term average of 144 blocks per day.
• After April 2024, nearly 95% of all bitcoins that will ever exist will have been mined.
• At 450 BTC per day, annual global miner issuance equals approximately 164,250 BTC per year at the current 3.125 BTC block reward.
• IBIT’s 813,953.5 BTC holdings equal approximately 4.96 years of total post-halving global miner issuance at the current 164,250 BTC annual rate.
• IBIT’s 31,627 BTC April accumulation exceeded global miner output of approximately 13,500 BTC for the same month by a factor of roughly 2.34x.

Why it matters: Bitcoin’s post-halving daily issuance of 450 BTC has not kept pace with institutional accumulation. When a single fund consumes more than two months of global supply in 30 days, the marginal buyer of bitcoin in 2026 is no longer the new investor; it is the redemption arbitrage between ETF authorized participants and miners selling fresh supply.

BlackRock IBIT vs Fidelity FBTC: ETF Issuer Comparison

• Fidelity’s FBTC holds 188,479.5 BTC as of May 4, 2026, valued at approximately $15,233,559,674, equal to 0.898% of the 21M supply.
• FBTC began with approximately 5,291 BTC in late January 2024, near IBIT’s launch window.
• IBIT’s 813,953.5 BTC holdings are roughly 4.32x Fidelity FBTC’s 188,479.5 BTC, despite both funds launching within days of each other in January 2024.
• FBTC showed notable fluctuations in holdings throughout 2024 to 2026, with sustained accumulation overall.
• FBTC sits at approximately 187,000 BTC in CoinGlass aggregate ETF data, the second-largest holder among US spot Bitcoin ETFs after IBIT.
• FBTC accounts for the second-largest share among US spot Bitcoin ETF holdings, well behind IBIT’s lead among the twelve products.

Source: Bitbo treasury trackers for IBIT and FBTC

US Government Bitcoin Holdings vs BlackRock IBIT

• The US government holds between 198,000 and 326,588 BTC, making it the world’s largest government bitcoin holder.
• All US government bitcoin comes from law enforcement seizures, not purchases, with major sources including Silk Road, Bitfinex, and the Prince Group.
• The 2020 Silk Road seizure recovered 69,370 BTC from an unidentified hacker referred to in court documents as “Individual X.”
• Authorities recovered 94,643 BTC from Ilya Lichtenstein and Heather Morgan in the primary Bitfinex seizure, with additional Bitfinex-related forfeitures of 12,267 BTC and 2,818 BTC.
• Bitfinex recovery operations combined provided roughly 109,728 BTC to the US government, more than half of some estimated total holdings.
• The March Strategic Bitcoin Reserve executive order shifted policy from selling seized crypto to holding it permanently.

Across CoinLaw’s regulation coverage, the seizure-to-reserve pivot follows a pattern documented across multiple SEC and CFTC crypto enforcement events: policy treatment of bitcoin shifts after large-volume law enforcement actions establish that the asset is too valuable to liquidate piecemeal. The Strategic Bitcoin Reserve is the policy expression of that learning.

What BlackRock’s Bitcoin Position Means for Bitcoin’s Hard Cap

• Bitcoin’s circulating supply was approximately 20,023,521 BTC as of early May 2026, equal to 95% of the 21,000,000 BTC maximum.
• Approximately 450 bitcoins are mined daily at the current post-halving block reward.
• Roughly 1.32 million BTC remain unmined as of 2026.
• IBIT’s 813,953.5 BTC measured against bitcoin’s circulating supply of 20,023,521 BTC lands fractionally above the 3.876% of-21M figure when expressed as a share of currently circulating coins.
• All 12 US spot Bitcoin ETFs combined hold approximately 1.29 million BTC against a circulating supply of 20,023,521 BTC, slightly above the 6.5% estimate.
• BlackRock IBIT, Strategy, and the documented US government Bitfinex recovery alone account for the sum of 813,953.5 BTC, 818,334 BTC, and 109,728 BTC in concentrated holdings.

Why it matters: With 95% of all bitcoin already mined and roughly 1.32 million BTC left to issue the marginal supply available for institutional accumulation is shrinking each year. The combined BlackRock-Strategy-US government concentration of about 9% of circulating supply demonstrates how quickly fixed-supply assets concentrate when large-scale buyers operate at industrial pace.

Frequently Asked Questions (FAQs)

Conclusion

BlackRock’s IBIT holds over 813,953.5 BTC as of May 4, 2026, equal to 3.876% of bitcoin’s 21 million supply and built from a launch-day position of approximately 2,621 BTC in 16 months. Strategy’s 818,334 BTC corporate treasury operates alongside that ETF position. The aggregate of approximately 1.29 million BTC held across all 12 US spot Bitcoin ETFs and the approximately 84% Coinbase Custody concentration combine to reshape how bitcoin’s fixed supply meets institutional demand.

Two patterns stand out for readers tracking this market. First, IBIT’s April 2026 accumulation of approximately 31,627 BTC exceeded the estimated global miner issuance of about 13,500 BTC for the same month, meaning the marginal seller of bitcoin is no longer a new entrant but the arbitrage path between authorized participants and miner sales. Second, the approximately 84% Coinbase Custody concentration places the majority of ETF-held bitcoin behind one operational counterparty. Both patterns will continue to shape spot ETF flows, Bitcoin adoption rates by country, and the regulatory conversation around custodian concentration.