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Organization | 12 Months Ended
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Dec. 31, 2025
Organization [Abstract] |
Organization |
| 1. | Organization
The ARK 21Shares Bitcoin ETF (the “Trust”) is a Delaware statutory trust, formed on June 22, 2021, pursuant to the Delaware Statutory Trust Act (“DSTA”). The Trust operates pursuant to an Amended and Restated Trust Agreement (the “Trust Agreement”). CSC Delaware Trust Company, a Delaware trust company, is the trustee of the Trust (the “Trustee”). The Trust is managed and controlled by 21Shares US LLC (the “Sponsor”). The Sponsor is a limited liability company formed in the state of Delaware on June 16, 2021. In November 2025, 21co Holdings Limited, Jura Pentium Inc’s former ultimate parent company, was acquired by FalconX Holdings Limited, which became the ultimate parent company of Jura Pentium Inc, and 21 Shares US LLC. Coinbase Custody Trust Company, LLC (“Coinbase”), BitGo Bank & Trust, N.A. (“BitGo”), Anchorage Digital Bank N.A. (“Anchorage”) and BitGo Trust Company, Inc. (“BitGo New York”, and, together with Coinbase, BitGo and Anchorage, as the context may require, the “Custodian”, “Custodians” and each a “Custodian”) are the custodians for the Trust and hold all of the Trust’s bitcoin on the Trust’s behalf. The transfer agent (the “Transfer Agent”), the administrator for the Trust (the “Administrator”), and the cash custodian (the “Cash Custodian”), is Bank of New York Mellon. The Trust is an exchange-traded fund that issues common shares of beneficial interest (the “Shares”) representing fractional undivided beneficial interests in its net assets that trade on the Cboe BZX Exchange, Inc. (the “Exchange”). The Shares were listed for trading on the Exchange on January 11, 2024, under the ticker symbol “ARKB”. The Trust’s investment objective is to seek to track the performance of bitcoin, as measured by the performance of the CME CF Bitcoin Reference Rate—New York Variant (the “Index”), adjusted for the Trust’s expenses and other liabilities. CF Benchmarks Ltd. is the administrator for the Index (the “Index Provider”). The Index is designed to reflect the performance of bitcoin in U.S. dollars. In seeking to achieve its investment objective, the Trust holds bitcoin at its Custodians and values its Shares daily based on the Index. ARK Investment Management LLC (the “Sub-Adviser”) is the sub-adviser of the Trust and provides assistance in the marketing of the Shares. The Trust’s Shares are neither interests in nor obligations of the Sponsor, the Sub-Adviser, or the Trustee. On December 12, 2023, the Sponsor, in its capacity as Seed Capital Investor, subject to conditions, purchased the initial Seed Shares comprising six at a per-Share price of $16.67. Total proceeds to the Trust from the sale of these Initial Seed Shares were $100. Delivery of the Initial Seed Shares was made on December 12, 2023. These Seed Shares were redeemed for cash on or about January 5, 2024. On January 9, 2024 (the “Seed Capital Purchase Date”), the Seed Capital Investor purchased Baskets comprising 30,000 Shares (the “Initial Seed Creation Baskets”) at a per-share price of $15.63. Total proceeds to the Trust from the sale of the Initial Seed Creation Baskets were $468,806.44. On January 9, 2024, the Trust purchased 10 bitcoins with the proceeds of the Initial Seed Creation Baskets by transacting with a bitcoin counterparty, which is a designated third party who is not an Authorized Participant (as defined below) but who may be an affiliate of an Authorized Participant and with whom the Sponsor has entered into an agreement on behalf of the Trust (a “Trading Counterparty”), to acquire bitcoin on behalf of the Trust in exchange for cash provided by the Sponsor in its capacity as Seed Capital Investor. These Initial Seed Creation Baskets were redeemed for cash on or about January 19, 2024. Effective June 12, 2024, the Sponsor, on behalf of the Trust, entered into a Master Purchase and Sale Agreement for Digital Assets (“Agreement for Digital Assets”) with FalconX Bravo, Inc. (“FalconX Bravo”), a registered swap dealer and a subsidiary of FalconX. The Agreement governs spot purchase and sale transactions in digital assets conducted on a principal-to-principal basis. Transactions are executed at prevailing market prices and are subject to customary terms and conditions. On June 2, 2025, the Trust announced that the Sponsor approved a three (3)-for-one (1) share split (the “Share Split”) of all of the Trust’s outstanding Shares. In connection with the Share Split, every one Share that was held by the Trust’s beneficial owners (the “Record Holders”) at the close of business on June 12, 2025, automatically split into three Shares after market close on June 13, 2025. The Share Split became effective at market open on June 16, 2025. Following the Share Split, the Shares continued to trade under the ticker symbol “ARKB” under the same CUSIP, and the total net asset value (“NAV”) of the Trust did not change as a result of the Share Split. In addition, each Record Holder continued to hold the same percentage of the Trust’s outstanding Shares as held immediately prior to the Share Split, and the Share Split did not modify the rights or preferences of the Shares. The investment objective, strategy, and underlying holdings of the Trust remained unchanged. The fiscal year of the Trust is December 31st.

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