- BlackRock’s IBIT crossed $90 billion in assets on August 15, 2025.
- Tracker figures show about $91.06 billion while the issuer site listed $88.0 billion a day earlier due to reporting lag.
BlackRock’s iShares Bitcoin Trust moved above $90 billion in assets under management on August 15, 2025, setting a new high for a US spot bitcoin fund as the rally in the underlying asset and steady creations lifted total net assets.
IBIT assets exceed $90 billion as bitcoin trades near recent highs
External dashboards that consolidate exchange filings and fund disclosures pegged IBIT at roughly $91.06 billion in assets on Friday. BlackRock’s own product page showed $88.047 billion as of August 14, a snapshot that lags intraday market moves and creation orders.
The discrepancy reflects normal timing differences between issuer updates and third-party trackers that refresh around US trading hours.
Flows have remained supportive. Aggregated flow tallies indicate IBIT’s cumulative net inflows are about $58 billion since launch, with a recent single-day intake above $520 million contributing to the week’s momentum.
These inflow estimates are compiled from fund reports and exchange data, and they are subject to routine reconciliation.
IBIT is structured as a physically backed vehicle that holds bitcoin in custody while issuing shares that trade on Nasdaq. Coinbase serves as execution and prime brokerage infrastructure for the trust alongside the custodian.
The fund’s benchmark is the CME CF Bitcoin Reference Rate New York Variant, aligning portfolio valuation with a widely used institutional price.
Cumulative inflows outpace peers as Fidelity’s fund remains second by assets
On relative positioning, BlackRock’s product continues to lead US spot bitcoin ETFs by assets and flows, with Fidelity’s Wise Origin Bitcoin Fund in second place by AUM. Peer rankings vary day to day as bitcoin’s price and creations or redemptions move net assets, but the gap has widened over recent weeks as IBIT’s inflows persisted.
Holdings expressed in bitcoin terms have climbed alongside asset values, leaving the trust with a material share of the circulating supply according to several market trackers. While estimates differ depending on methodology and update frequency, they consistently place IBIT as the largest single listed holder among US spot products.
Traders attribute the latest asset milestone to a combination of risk appetite in digital assets and the operational ease of creations for authorised participants.
The primary market mechanism allows institutions to assemble baskets against the reference rate and deliver bitcoin in kind to create shares, then sell those shares on exchange to meet secondary demand. These mechanics have tightened trading spreads and kept share prices close to net asset value during higher-volume sessions.
With bitcoin’s price and ETF activity both elevated this week, further changes in IBIT’s reported assets remain likely as daily disclosures update and creations settle. Market participants will watch whether inflows continue at recent levels into month end, and how rivals respond with fee or market-making adjustments to defend share.
At the time of this update, Bitcoin is priced at $118,992.00, reflecting a $2,868.00 decline—about –2.35%—from the previous close.
