BlackRock IBIT AUM Trajectory
Monthly AUM in USD billions and corresponding BTC held by the BlackRock iShares Bitcoin Trust (ticker IBIT) since launch on 11 January 2024. IBIT reached USD 50B faster than any ETF on record and holds more BTC than every other US spot Bitcoin ETF combined. Hover for the AUM and BTC-held figures at any month. Values are reconstructed from IBIT's reported net assets (via SoSoValue) and its daily flow history, converted at the BTC/USD close, and refresh automatically.
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Monthly AUM in USD billions for BlackRock's iShares Bitcoin Trust (IBIT). Hover any month for the AUM and corresponding BTC held. Click Fullscreen for a presentation-grade view.
AUM milestones
- USD 1B in about a week (mid-January 2024). One of the fastest USD 1B accumulations in ETF history.
- USD 10B in 7 weeks (early March 2024). Eclipsed every prior ETF launch record.
- USD 20B in about five months (early June 2024), after the first-quarter spot BTC rally past USD 70K.
- USD 50B in 11 months (December 2024). Coincident with the post-US-election BTC rally to fresh ATH.
- USD 75B in 18 months (mid-2025). Continued steady model-portfolio adoption.
- Peak near USD 98.6B (October 2025), at the Bitcoin all-time high; just short of USD 100B on a daily-close basis.
Why IBIT dominated
IBIT's first-mover-plus-distribution dominance has four structural drivers:
- BlackRock platform integration. BlackRock's Aladdin (the institutional portfolio-management software used by sovereign wealth funds, pension funds, and most major asset managers) integrated IBIT as a default building block for crypto-sleeve allocations. Aladdin users get IBIT exposure with one click; no equivalent integration exists for the other spot BTC ETFs.
- Wirehouse model portfolio inclusion. The four major US wirehouses (Morgan Stanley, Merrill Lynch, UBS, Wells Fargo) run hundreds of model portfolios that Financial Advisors deploy at the client level. IBIT made it onto multiple model portfolios within months of launch - capturing a recurring institutional bid that compounds over time.
- 401(k) administrator access. BlackRock's relationships with US 401(k) plan administrators allowed IBIT to appear as a permitted-investment option in many large-plan menus. That created a steady drip of retirement-account demand that does not exist for the smaller issuers.
- Fee competitiveness. At 0.25% MER, IBIT is tied for the cheapest among the major US spot BTC ETFs. The combination of distribution + fee meant there was no good reason for a model-portfolio constructor to pick anything else.
AU-investor framing
- The dominant global BTC ETF bid. IBIT's daily net buying is the largest single source of new spot BTC demand globally other than direct spot-exchange flows. Sustained IBIT inflow runs have a structural impact on BTC price that AU-resident BTC holders directly benefit from.
- Access path. AUD-resident investors can hold IBIT via Stake / Interactive Brokers / a US-brokerage account. The trade-off: USD-denominated exposure with AUD/USD currency layer, 0.25% MER (vs the cheapest AU-listed alternative at 0.59%), W-8BEN tax paperwork.
- vs AU alternatives. For long-horizon allocations the IBIT fee saving (34bp annually vs the AU best-in-class) compounds materially. For SMSF allocations the AU-listed alternatives (EBTC, VBTC at 0.59%) are typically preferred for admin simplicity. See AU spot BTC ETF coverage for the local alternatives.
- vs direct custody. AUD-resident retail with no SMSF constraints frequently prefer direct BTC custody on Independent Reserve / CoinSpot / Swyftx (zero ongoing fees, sub-A$5 one-off purchase fees at scale). The ETF wrapper is more useful for SMSF and brokerage-only allocations.
Methodology
- Source. BlackRock IBIT monthly factsheet (ishares.com/us/products/333011/ishares-bitcoin-trust).
- Snapshot cadence. Month-end AUM and BTC-held values per BlackRock disclosure.
- Units. AUM in USD billions; BTC held as whole units.
- Static-first. Bundled seed snapshot is the fallback if upstream is unreachable.
Related tools
- Daily US spot BTC ETF flows - aggregate eleven-issuer flow.
- Cumulative US BTC ETF flow - aggregate running total.
- IBIT vs FBTC vs GBTC - the inter-issuer story.
- Australian BTC ETF coverage - the AU-listed alternative.
- Corporate BTC treasuries leaderboard - direct-holder ranking.
Frequently asked questions
IBIT crossed USD 10B AUM in roughly 7 weeks (the fastest ETF in history at the time). It crossed USD 50B in roughly 11 months (early December 2024) and peaked near USD 98.6B at the October 2025 Bitcoin high, just short of USD 100B on a daily-close basis. By comparison the SPDR Gold Shares (GLD) ETF - the prior fastest-growing commodity ETF on record - took 2 years to reach USD 5B and 4 years to reach USD 50B. IBIT's AUM growth was uniquely accelerated by the combination of BlackRock's distribution muscle, the spot BTC rally during the launch window, and the GBTC-to-IBIT rotation.
AUM = (BTC held) x (BTC USD price). BTC held grows when net creations exceed net redemptions (allocator-decision channel). BTC price moves with the broader spot market. AUM therefore rises both when allocators buy and when BTC rallies, and falls both when allocators sell and when BTC corrects. IBIT's BTC-held growth has been more monotonic than AUM (BTC held rarely declines materially because IBIT has been a near-consistent net buyer).
GBTC pre-ETF-conversion peaked at roughly USD 28B AUM in late 2021. IBIT crossed that bar in about nine and a half months (late October 2024). IBIT now holds more BTC than every other US spot Bitcoin ETF combined, and its AUM has stayed well above GBTC's pre-launch peak.
IBIT is the largest single end-buyer of spot Bitcoin globally other than the major spot exchanges' on-exchange book inventory. Daily IBIT net creations correspond to daily spot BTC purchases at whatever price clears. The sustained IBIT bid throughout 2024-2025 has been a material structural demand floor for BTC, particularly during sentiment drawdowns when retail and miner selling would otherwise dominate.
Practically no. IBIT is BlackRock's flagship crypto product and is now one of the firm's largest ETFs by AUM (IBIT crossed past major BlackRock fixed-income ETFs in mid-2025). Closure would also require unwinding a position larger than most sovereign Bitcoin holdings, with material market-impact implications. Regulatory or framework risk is possible (an SEC reversal under unusual conditions), but the more realistic risk to monitor is fee compression as competitor ETFs cut MERs to attract switchers.
Monthly AUM and BTC-held data from BlackRock's published IBIT factsheet (ishares.com/us/products/333011/ishares-bitcoin-trust) and the daily creation/redemption disclosure. Snapshot file bundled with the site; updated as new monthly factsheets publish.
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