Welcome to our dedicated page for ARK 21Shares Bitcoin ETF SEC filings (Ticker: ARKB), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The ARK 21Shares Bitcoin ETF (ARKB) SEC filings page on Stock Titan provides direct access to the Trust’s regulatory disclosures, along with AI-powered summaries that help explain key terms and structures. ARKB’s common shares of beneficial interest are registered under Section 12(b) of the Securities Exchange Act of 1934 and trade on Cboe BZX Exchange, Inc., and its filings describe how the Trust holds bitcoin and manages its relationships with custodians and authorized participants.
In documents such as Form 8-K, investors can review details of the Trust’s custodial services agreement with BitGo Trust Company, Inc., which covers segregated custody accounts, insurance requirements, and indemnification provisions. Filings also describe existing custody arrangements with Coinbase Custody Trust Company, LLC, Anchorage Digital Bank N.A., and BitGo New York Trust Company, LLC, as well as how the Sponsor allocates bitcoin among these Custodians and bears the costs of transferring bitcoin between them via on-chain transactions on the Bitcoin network.
Other filings outline the authorized participant agreement with Macquarie Capital (USA) Inc., including procedures for creating and redeeming Baskets of 5,000 shares, the possibility of in-kind creation and redemption orders, and the circumstances under which the Trust indemnifies Macquarie and its affiliates. These documents provide insight into how new shares are brought into the market and how bitcoin is delivered for those transactions.
Stock Titan’s filing tools surface real-time updates from EDGAR and apply AI analysis to highlight important sections in ARK 21Shares Bitcoin ETF’s 10-K, 10-Q, 8-K, and other submissions. Users can quickly locate discussions of bitcoin custody, authorized participant arrangements, indemnification clauses, and emerging growth company disclosures, as well as track insider-related forms such as Form 4 when available.
ARK 21Shares Bitcoin ETF files its annual report describing how the trust tracks the price of bitcoin and outlining key operational and risk details. The ETF holds bitcoin in custody with multiple regulated custodians, values its shares daily using the CME CF Bitcoin Reference Rate – New York Variant, and issues and redeems shares in 5,000‑share baskets through authorized participants.
The trust charges a unitary 0.21% Sponsor Fee, largely paid in bitcoin, which covers most operating expenses; this fee was fully waived until trust assets first exceeded $1 billion in February 2024. As of June 30, 2025, shares held by non‑affiliates were valued at $5.03 billion, and there were 107,550,000 shares outstanding as of February 26, 2026.
The filing emphasizes that the ETF is a passive grantor trust concentrated solely in bitcoin, not registered under the Investment Company Act or regulated as a commodity pool. It details extensive cybersecurity, custody, and prime brokerage arrangements, while highlighting significant risks from bitcoin price volatility, exchange failures, market manipulation, regulatory changes, tax treatment uncertainties, and limited investor rights, including minimal voting powers and broad indemnification protections for the sponsor and service providers.
ARK 21Shares Bitcoin ETF reported two key operational updates affecting how it holds bitcoin and processes share creations and redemptions. On December 12, 2025, the fund entered into a new Custodial Services Agreement with BitGo Trust Company, Inc., under which BitGo will maintain segregated custody accounts for the ETF’s bitcoin, keep reasonable insurance coverage, and provide safekeeping services. The ETF must indemnify BitGo and certain affiliates in specified circumstances.
The sponsor will continue to use existing custodians Coinbase Custody Trust Company, LLC, Anchorage Digital Bank N.A., and BitGo New York Trust Company, LLC, and will allocate bitcoin among them and BitGo Trust Company based on risk, cost, and other factors. On December 16, 2025, the ETF also entered into an Authorized Participant Agreement with Macquarie Capital (USA) Inc., allowing Macquarie to create and redeem 5,000-share baskets, including in-kind orders using bitcoin, with transaction fees generally charged by the sponsor.
ARK 21Shares Bitcoin ETF (ARKB) reported Q3 results anchored by bitcoin price movement and share activity. Net assets were $5,092,934 thousand at September 30, 2025, with NAV per share of $38.00. The Trust held 44,528.1082 bitcoins, valued at $5,093,058 thousand using its principal market price.
For the quarter, the Trust recorded a net increase in net assets from operations of $317,667 thousand, driven by net realized and unrealized gains of $320,440 thousand and sponsor fees of $2,773 thousand. For the nine months ended September 30, 2025, the Trust posted a net increase from operations of $927,779 thousand and total return at NAV of 22.30%. Shares outstanding were 134,040,000 at September 30, 2025; the Trust executed a 3‑for‑1 share split effective June 16, 2025. The Sponsor fee remained 0.21% annually, with $7,584 thousand incurred for the nine-month period.