iShares Bitcoin Trust ETF
Item 1. Business.
Summary
The iShares Bitcoin Trust ETF (the “Trust”) was formed as a Delaware statutory trust on June 8, 2023. The Trust is governed by the provisions of the Third Amended and Restated Trust Agreement (the “Trust Agreement”) executed by iShares Delaware Trust Sponsor LLC, as sponsor (the “Sponsor”), BlackRock Fund Advisors, as trustee (the “Trustee”), and Wilmington Trust, National Association, as Delaware trustee (the “Delaware Trustee”), dated as of June 27, 2025.
The purpose of the Trust is to own bitcoin purchased by the Trust in exchange for the shares issued by the Trust (the “Shares”). Each Share represents a fractional undivided beneficial interest in the net assets of the Trust. The owners of the beneficial interests in the Shares are the “Shareholders.” The assets of the Trust consist primarily of bitcoin held by a custodian on behalf of the Trust. The Sponsor and the Trustee are consolidated subsidiaries of BlackRock, Inc. (“BlackRock”). Coinbase Custody Trust Company, LLC serves as the custodian for the Trust’s bitcoin holdings (the “Bitcoin Custodian”); Anchorage Digital Bank N.A. serves as an additional available custodian for the Trust’s bitcoin holdings (the “Additional Bitcoin Custodian”); Coinbase, Inc. (“Coinbase Inc.” or the “Prime Execution Agent”), an affiliate of the Bitcoin Custodian, serves as the Trust’s prime execution agent; and The Bank of New York Mellon serves as the custodian for the Trust’s cash holdings (the "Cash Custodian”) and as the administrator of the Trust (the “Trust Administrator”). The Bitcoin Custodian, the Additional Bitcoin Custodian, and the Cash Custodian are collectively referred to as the “Custodians.”
The Trust’s net asset value increased from $51,519,566,547 at December 31, 2024 to $67,401,155,244 at December 31, 2025, the Trust’s fiscal year end. Outstanding Shares of the Trust increased from 970,440,000 Shares at December 31, 2024 to 1,358,680,000 Shares outstanding at December 31, 2025.
The activities of the Trust are limited to (1) issuing blocks of 40,000 Shares (a “Basket”) in exchange for the cash deposited with the Cash Custodian as consideration, (2) selling or delivering bitcoin, as necessary to cover the remuneration due to the Sponsor (the “Sponsor’s Fee”), Trust expenses not assumed by the Sponsor and other liabilities and (3) buying and selling bitcoin through the designated third parties who are not registered broker-dealers and transact in bitcoin pursuant to written agreements with the Trust (each, a “Bitcoin Trading Counterparty” and each written agreement, a “Bitcoin Trading Counterparty Agreement”) or the Prime Execution Agent, as applicable, in exchange for Baskets in connection with creation and redemption.
The Trust is not actively managed. It does not engage in any activities designed to obtain a profit from, or to ameliorate losses caused by, changes in the price of bitcoin.
The Sponsor of the Trust maintains a website at www.ishares.com, through which the Trust’s annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (“Exchange Act”), are made available free of charge after they have been filed or furnished to the Securities and Exchange Commission (the “SEC”). The information on the Trust’s website is not, and shall not be deemed to be, part of this report or incorporated into any other filings we make with the SEC. Additional information regarding the Trust may also be found on the SEC’s EDGAR database at www.sec.gov.
Trust Objective
The Trust seeks to reflect generally the performance of the price of bitcoin. The Trust seeks to reflect such performance before payment of the Trust’s expenses and liabilities. The Shares are intended to constitute a simple means of making an investment similar to an investment in bitcoin rather than by acquiring, holding and trading bitcoin directly on a peer-to-peer or other basis or via a digital asset platform. The Shares have been designed to remove the obstacles represented by the complexities and operational burdens involved in a direct investment in bitcoin, while at the same time having an intrinsic value that reflects, at any given time, the investment exposure to the bitcoin owned by the Trust at such time, less the Trust’s expenses and liabilities. Although the Shares are not the exact equivalent of a direct investment in bitcoin, they provide investors with an alternative method of achieving investment exposure to bitcoin through the securities market, which may be more familiar to them.
An investment in Shares is:
Backed by bitcoin held by the Bitcoin Custodian on behalf of the Trust.
The Shares are backed by the assets of the Trust. The Bitcoin Custodian keeps custody of all of the Trust’s bitcoin, other than that which is maintained in a trading account (the “Trading Balance”) with the Prime Execution Agent, in accounts that are required to be segregated from the assets held by the Bitcoin Custodian as principal and the assets of its other customers (the “Vault Balance”). The Bitcoin Custodian keeps all of the private keys associated with the Trust’s bitcoin in the Vault Balance. The hardware, software, systems, and procedures of the Bitcoin Custodian may not be available or cost-effective for many investors to access directly. The Trust’s bitcoin holdings and cash holdings from time to time may be held with the Prime Execution Agent, an affiliate of the Bitcoin Custodian, in the Trading Balance, in connection with creations and redemptions of Baskets, the sale of bitcoin to pay the Sponsor’s Fee and any other Trust expenses not assumed by the Sponsor, to the extent applicable, and in extraordinary circumstances, in connection with the liquidation of the Trust’s bitcoin. These periodic holdings held in the Trading Balance with the Prime Execution Agent represent an omnibus claim on the Prime Execution Agent’s bitcoin (and cash) held on behalf of clients; these bitcoin holdings exist across a combination of omnibus hot wallets, omnibus cold wallets or in accounts in the Prime Execution Agent’s name on a trading venue (including third-party venues and the Prime Execution Agent’s own execution venue) where the Prime Execution Agent executes orders to buy and sell bitcoin on behalf of clients.
As convenient and easy to handle as any other investment in shares.
Investors may purchase and sell Shares through traditional securities brokerage accounts, and can avoid the complexities of handling bitcoin directly (e.g., managing wallets and public and private keys themselves, or interfacing with a trading platform), which some investors may not prefer or may find unfamiliar.
Listed.
The Shares are listed and traded on The Nasdaq Stock Market LLC (“NASDAQ”) under the ticker symbol “IBIT.”
Competition
The Trust and the Sponsor face competition with respect to the creation of competing exchange-traded bitcoin products. There can be no assurance that the Trust will achieve market acceptance and scale due to competition.
Secondary Market Trading
While the Trust seeks to reflect generally the performance of the price of bitcoin before the payment of the Trust’s expenses and liabilities, Shares may trade at, above or below their NAV. The NAV will fluctuate with changes in the market value of the Trust’s assets. The trading prices of Shares will fluctuate in accordance with changes in their NAV as well as market supply and demand. The amount of the discount or premium in the trading price relative to the NAV may be influenced by non-concurrent trading hours between the major bitcoin markets and NASDAQ. While the Shares will trade on NASDAQ until 4:00 p.m. Eastern Time Zone (“ET”), liquidity in the market for bitcoin may be reduced, negatively affecting the trading volume; alternatively, developments in bitcoin markets (which operate around the clock), including price volatility, declines in trading volumes, and the closing of bitcoin trading platforms due to fraud, failures, security breaches or otherwise that occur outside of NASDAQ trading hours will not be reflected in trading prices of the Shares until trading on the NASDAQ opens. As a result, during this time, trading spreads, and the resulting premium or discount, on Shares may widen. However, the Sponsor believes that the Basket size of 40,000 Shares will enable registered broker-dealers who have entered into written agreements with the Sponsor and the Trustee (each, an “Authorized Participant” and each written agreement, an “Authorized Participant Agreement”) and Bitcoin Trading Counterparties to manage inventory and facilitate an effective arbitrage mechanism for the Trust. The Sponsor believes that the arbitrage opportunities may provide a mechanism to mitigate the effect of such premium or discount.
The Trust is not registered as an investment company for purposes of U.S. federal securities laws and is not subject to regulation by the SEC as an investment company. Consequently, the owners of Shares do not have the regulatory protections provided to investors in registered investment companies. For example, the provisions of the Investment Company Act of 1940, as amended (the “Investment Company Act”), that limit transactions with affiliates, prohibit the suspension of redemptions (except under certain limited circumstances) or limit sales loads, among others, do not apply to the Trust. The Sponsor is not registered with the SEC as an investment adviser and is not subject to regulation by the SEC as such in connection with its activities with respect to the Trust. Consequently, the owners of Shares do not have the regulatory protections provided to advisory clients of SEC-registered investment advisers.
The Trust does not hold or trade in commodity futures contracts or any other instruments regulated by the Commodity Exchange Act (the “CEA”), as administered by the U.S. Commodity Futures Trading Commission (the “CFTC”). Furthermore, the Trust is not a commodity pool for purposes of the CEA. Consequently, the Trustee and the Sponsor are not subject to registration as commodity pool operators or commodity trading advisors with respect to the Trust. The owners of Shares do not receive the CEA disclosure document and certified annual report required to be delivered by the registered commodity pool operator with respect to a commodity pool, and the owners of Shares do not have the regulatory protections provided to investors in commodity pools operated by registered commodity pool operators.
The Cash Custodian
The Cash Custodian is The Bank of New York Mellon. Pursuant to the services agreement between the Cash Custodian, the Trustee and the Trust (the “Services Agreement”), the Cash Custodian will establish and maintain cash account(s) for the Trust and, upon instructions from the Trustee acting on behalf of the Trust, facilitate cash transfers and cash payments from the Trust’s account(s). The fees of the Cash Custodian are paid by the Trustee on behalf of the Trust.
Under the Services Agreement, the Cash Custodian has agreed to provide its services for an initial term of two years with an automatic renewal of successive one-year terms unless earlier terminated pursuant to the Services Agreement. In addition, the Cash Custodian may terminate its services for certain material breaches of the Services Agreement or for failure to pay fees within a specified grace period and terminations as may be required or occasioned by law. The Trust may terminate the Services Agreement for, among others, cause, certain enduring force majeure events, terminations as may be required or occasioned by law, and for certain corporate events affecting the Cash Custodian.
The Cash Custodian will exercise the following standard of care: (1) with the exercise of that level of care at least at the same standard of care as the Cash Custodian provides for itself and/or its affiliates with respect to similar services, and without the exercise of any bad acts, (2) in a manner reasonably designed to satisfy the Cash Custodian’s obligations under the Services Agreement; and (3) with the skill and care that may reasonably be expected of a first class international financial services provider of asset processing and related services.
Except as otherwise expressly provided in the Services Agreement, the Cash Custodian’s liability arising out of or relating to the Services Agreement shall be limited solely to those direct damages that are caused by the Cash Custodian’s failure to perform its obligations under the Services Agreement in accordance with such standard of care. The Trust agrees to indemnify the Cash Custodian and hold the Cash Custodian harmless from and against all losses, expenses, damages and liabilities (including reasonable counsel fees and expenses) incurred by the Cash Custodian arising out of or relating to the Cash Custodian’s performance under the Services Agreement, except to the extent resulting from the Cash Custodian’s failure to perform its obligations under the Services Agreement in accordance with such standard of care.
The Trust may retain additional cash custodians from time to time pursuant to a cash custodian agreement to perform certain services that are typical of a cash custodian. The Sponsor may, in its sole discretion, add or terminate cash custodians at any time.
The Services Agreement is governed by the laws of the State of New York.
The Bitcoin Custodian and Additional Bitcoin Custodian
The Bitcoin Custodian for the Trust’s bitcoin holdings is Coinbase Custody Trust Company, LLC, and the Additional Bitcoin Custodian for the Trust’s bitcoin holdings is Anchorage Digital Bank N.A. The Trust has entered into the Custodian Agreement with the Bitcoin Custodian and the Anchorage Custodian Agreement with the Additional Bitcoin Custodian. The Sponsor may, in its sole discretion, add or terminate bitcoin custodians. The Sponsor may, in its sole discretion, change the custodian for the Trust’s bitcoin holdings, but it will have no obligation whatsoever to do so or to seek any particular terms for the Trust from other such custodians.
Coinbase Custody - The Bitcoin Custodian
The Bitcoin Custodian keeps custody of all of the Trust’s bitcoin held by the Bitcoin Custodian in segregated accounts in the Vault Balance, other than the Trust’s bitcoin which is temporarily maintained in the Trading Balance with the Prime Execution Agent as described below in “The Prime Execution Agent and The Trade Credit Lender—The Prime Execution Agent.” Trust assets held in the Vault Balance are held in segregated wallets, and are not commingled with the Bitcoin Custodian’s or its affiliates’ assets, or the assets of the Bitcoin Custodian’s other customers. The Vault Balance is held at the blockchain ledger for bitcoin (the “Bitcoin blockchain”) addresses at which only the Trust’s assets are held.
The Bitcoin Custodian keeps all of the private keys associated with the Trust’s bitcoin held at the Bitcoin Custodian in the Vault Balance in cold storage. Cold storage is a safeguarding method by which the private key(s) corresponding to bitcoin is (are) generated and stored in an offline manner. Private keys are generated in offline computers or devices that are not connected to the internet so that they are more resistant to being hacked. By contrast, in hot storage, the private keys are held online, where they are more accessible, leading to more efficient transfers, though they are potentially more vulnerable to being hacked.
Cold storage of private keys may involve keeping such keys on a non-networked computer or electronic device or storing the public key and private keys on a storage device or printed medium and deleting the keys from all computers. The Bitcoin Custodian may receive deposits of bitcoin but may not send bitcoin without use of the corresponding private keys. Such private keys are stored in cold storage facilities within the United States and Europe, the exact locations of which are not disclosed for security reasons. A limited number of employees at the Bitcoin Custodian are involved in private key management operations, and the Bitcoin Custodian has represented that no single individual has access to full private keys. The Bitcoin Custodian’s internal audit team performs periodic internal audits over custody operations, and the Bitcoin Custodian has represented that Systems and Organizational Control (“SOC”) attestations covering private key management controls are also performed on the Bitcoin Custodian by an external provider.
Coinbase Global Inc. (“Coinbase Global”), the parent company of the Bitcoin Custodian, the Prime Broker and the Trade Credit Lender (“Coinbase Global”) maintains a commercial crime insurance policy, which is intended to cover the loss of client assets held by Coinbase Global and its subsidiaries, referred to as the “Coinbase Insureds,” including losses arising from employee collusion or fraud, physical loss including theft, damage of key material, security breach or hack, and fraudulent transfer. The insurance maintained by Coinbase Global is shared among all of Coinbase’s customers, is not specific to the Trust or to customers holding bitcoin with the Bitcoin Custodian or the Prime Execution Agent and may not be available or sufficient to protect the Trust from all possible losses or sources of losses.
Next expected filings
- ~2026-08-04 10-Q expected by 2026-08-07 (in 81 days)
- ~2026-11-05 10-Q expected by 2026-11-08 (in 174 days)
- ~2027-02-24 10-K expected by 2027-03-07 (in 285 days)
- ~2027-05-06 10-Q expected by 2027-05-09 (in 356 days)
Predicted from historical filing cadence; not an SEC commitment.
Recent SEC filings
- 2026-05-07 10-Q Quarterly Report
- 2026-03-31 8-K Officer/Director Change
- 2026-02-27 10-K Annual Report
- 2025-11-06 10-Q Quarterly Report
- 2025-08-05 10-Q Quarterly Report
- 2025-05-07 10-Q Quarterly Report
- 2025-04-08 8-K Material Agreement Entered; Financial Statements and Exhibits
- 2025-03-05 10-K Annual Report
- 2024-11-07 10-Q Quarterly Report
- 2024-09-19 8-K Material Agreement Entered; Financial Statements and Exhibits
- 2024-08-08 10-Q Quarterly Report
- 2024-07-26 8-K Material Agreement Entered; Financial Statements and Exhibits