Grayscale Bitcoin Mini Trust ETF

Grayscale Bitcoin Mini Trust ETF: Annual Report Review (Fiscal Year Ended December 31, 2025)

Unlock the insights into your Bitcoin investment. This summary provides a comprehensive review of the Grayscale Bitcoin Mini Trust ETF's performance, operations, and risk factors for the fiscal year ended December 31, 2025. Based on its recent 10-K filing, this report aims to clarify key aspects of this investment vehicle for retail investors.

Business Overview

Fund Overview and Investment Objective

The Grayscale Bitcoin Mini Trust ETF (NYSE Arca: BTC) offers investors a way to gain exposure to Bitcoin's price movements. On November 4, 2024, it officially transitioned to an ETF structure, changing its name from "Grayscale Bitcoin Mini Trust (BTC)." Formed on March 12, 2024, its shares began trading on NYSE Arca on July 31, 2024.

Its main goal is to mirror the value of the Bitcoin it holds, as measured by its Bitcoin Reference Rate, after accounting for the Trust's expenses and liabilities. It achieves this through a "passive" investment strategy: the ETF does not actively manage its Bitcoin holdings or try to outperform Bitcoin, but instead aims to track Bitcoin's price movements directly. Crucially, the Trust explicitly states it does not use leverage or derivatives, ensuring straightforward, direct exposure to Bitcoin.

Fund Operations and Structure

The ETF uses a "Cash Order" creation and redemption mechanism. This means authorized participants (large financial institutions) create or redeem shares by exchanging cash with the Trust, instead of directly exchanging Bitcoin. This process helps keep the ETF's market price closely aligned with its underlying Net Asset Value (NAV).

• Custody: Coinbase Custody Trust Company, LLC serves as the primary custodian, securely holding the Trust's Bitcoin in cold storage – a critical arrangement for asset safety.
• Administration: The Bank of New York Mellon acts as the administrator, transfer agent, and cash custodian, handling operational tasks like NAV calculation, share issuance, and record-keeping.
• Asset Security: A core principle of the Trust's design is its commitment that the Bitcoin it holds will not be loaned out, pledged, or used as collateral. This policy aims to reduce counterparty risk and ensure shares are directly backed by Bitcoin.

Management and Governance

The Trust's sponsorship underwent internal restructuring during the reporting period:

• Grayscale Investments, LLC served as sponsor until the end of 2024.
• For a brief period in early 2025, Grayscale Investments Sponsors, LLC and Grayscale Operating, LLC co-sponsored it.
• Since May 3, 2025, Grayscale Investments Sponsors, LLC (GSIS) has been the sole sponsor. This consolidation primarily represents an internal operational streamlining by Grayscale. GSIS now oversees the Trust's overall management and administration.

Financial Performance

Key Financials and Performance (Fiscal Year Ended December 31, 2025)

Fiscal year 2025 marked the Grayscale Bitcoin Mini Trust ETF's first full reporting period since its launch and conversion.

• Assets Under Management (AUM): By December 31, 2025, the Trust reported significant AUM of $4.7 billion, reflecting substantial investor interest since its inception and considerable growth from its initial trading period in late 2024.
• Shares Outstanding: At year-end, approximately 113 million shares of the ETF were outstanding.
• Bitcoin Holdings: The Trust held a notable amount of Bitcoin, approximately 0.24% of all Bitcoin in circulation as of December 31, 2025, directly backing its shares' value.
• Sponsor Fee (Expense Ratio): The Trust charges an annual Sponsor Fee of 0.30% of its AUM. This fee accrues daily and is deducted from the Trust's Bitcoin holdings, directly impacting the Net Asset Value (NAV) per share. It represents the primary ongoing expense for investors.
• Performance: For the fiscal year ended December 31, 2025:
  • The Grayscale Bitcoin Mini Trust ETF generated a total return of approximately +59.5%.
  • This performance closely tracked the underlying Bitcoin price, which returned approximately +60.0% over the same period.
  • The tracking error, the difference between the ETF's and Bitcoin's performance, was approximately 0.5%, primarily due to the Sponsor Fee and minor operational expenses.
• Net Asset Value (NAV): The NAV per share is calculated daily based on the total value of Bitcoin held by the Trust, minus its liabilities (primarily accrued sponsor fees), divided by the number of shares outstanding. A key operational goal is maintaining a tight correlation between the ETF's market price and its NAV.

Risk Factors

Key Risk Factors for Investors

Investing in the Grayscale Bitcoin Mini Trust ETF involves significant risks, stemming primarily from Bitcoin's inherent nature and the evolving regulatory landscape for digital assets. Investors should carefully consider these key risks:

1. Bitcoin Price Volatility: Bitcoin's price is highly volatile, subject to rapid and unpredictable fluctuations. Investors could lose a substantial portion, or even all, of their investment if Bitcoin's value significantly declines. Past performance is not indicative of future results.
2. Regulatory Uncertainty: The regulatory environment for Bitcoin and other digital assets remains uncertain and can change rapidly worldwide. New laws, regulations, or government actions (e.g., classifying Bitcoin as a security, restricting its use, or imposing new taxes) could severely impact Bitcoin's value and, consequently, the ETF's performance. The tax treatment of digital assets is also complex and evolving.
3. Market and Liquidity Risks: Digital asset trading platforms (exchanges) are generally less regulated than traditional securities exchanges. This can lead to market manipulation (e.g., wash trading, front-running), operational failures, or security breaches. Discrepancies between traditional market trading hours (NYSE Arca) and 24/7 crypto markets can also cause temporary divergences between the ETF's share price and its NAV.
4. Operational and Custody Risks: The Trust relies on third-party service providers like Coinbase Custody. A custodian failure (e.g., security breach, loss of private keys, insolvency) could lead to a loss of the Trust's Bitcoin. While the Trust aims to avoid lending Bitcoin, unforeseen "extraordinary expenses" (e.g., legal fees, regulatory fines, or unexpected operational costs not covered by the sponsor fee) could also reduce the NAV.
5. Tracking Error: While the ETF aims to closely track Bitcoin's price, the Sponsor Fee and other operational expenses will cause its performance to lag Bitcoin's over time. Market inefficiencies or operational issues could also contribute to tracking error.
6. Sponsor Conflicts of Interest: Potential conflicts of interest exist between the sponsor (Grayscale) and the Trust, particularly regarding the management of other Grayscale products or the sponsor's discretion in certain operational decisions. There is also a risk that the sponsor may cease providing services to the Trust.

Management Discussion and Analysis of Financial Condition and Results of Operations (MD&A Highlights)

Fiscal year 2025 marked the first full year of operations for the Grayscale Bitcoin Mini Trust ETF as a publicly traded spot Bitcoin ETF. Management focused on ensuring the seamless operation of the Trust's cash creation and redemption mechanism and maintaining a tight correlation between the ETF's market price and its Net Asset Value (NAV).

The significant growth in Assets Under Management (AUM) to $4.7 billion by year-end stemmed primarily from two factors: substantial investor inflows following the ETF's conversion and the appreciation in Bitcoin's market price during the period. The Trust's total return of +59.5% closely mirrored Bitcoin's +60.0% return, demonstrating its passive investment strategy's effectiveness. The observed tracking error of approximately 0.5% was largely attributable to the annual Sponsor Fee of 0.30% and other minor operational expenses inherent in managing the Trust. Management continuously monitors these factors to minimize divergence from the underlying Bitcoin performance.

Operational highlights included the successful transition to the ETF structure and the establishment of robust relationships with key service providers like Coinbase Custody and The Bank of New York Mellon, critical for the Trust's secure and efficient functioning. The sponsor also streamlined its internal structure, consolidating sponsorship under Grayscale Investments Sponsors, LLC to enhance operational clarity and efficiency. The Trust's commitment to not lending or pledging its Bitcoin holdings remained a core principle, mitigating certain counterparty risks.

Looking forward, management acknowledges that the Trust's financial performance will continue to be directly influenced by Bitcoin's highly volatile price movements and the evolving regulatory landscape for digital assets. The operational framework is designed to adapt to market conditions while adhering to the Trust's core objective: providing direct, passive exposure to Bitcoin.

Financial Health

The Grayscale Bitcoin Mini Trust ETF maintains a strong financial position, primarily characterized by its substantial Bitcoin holdings and a structure designed to minimize traditional financial liabilities.

• Debt: The Trust operates with no significant debt. It pays operational expenses, primarily the Sponsor Fee, by deducting Bitcoin from its holdings, rather than through borrowing. Any minor accrued liabilities for operational expenses are typically short-term and immaterial relative to the Trust's assets.
• Cash and Liquidity: The Trust holds minimal cash, primarily for immediate operational needs or as part of the cash creation and redemption process. Its primary asset is Bitcoin, securely held in cold storage by Coinbase Custody. The liquidity of the Trust's shares is supported by the "Cash Order" creation and redemption mechanism, which allows Authorized Participants to efficiently create and redeem large blocks of shares, helping to keep the ETF's market price aligned with its NAV. The liquidity of the underlying Bitcoin market, across various exchanges, also critically influences the Trust's ability to manage its holdings and facilitate the creation and redemption process.
• Capital Resources: The Trust's capital resources directly represent the value of its Bitcoin holdings. As a passively managed fund, its capital structure is straightforward: outstanding shares directly represent fractional ownership of the Bitcoin held by the Trust. The Trust does not engage in leverage or other complex financial instruments that would introduce additional capital structure risks.

Future Outlook

The Grayscale Bitcoin Mini Trust ETF offers investors a regulated and accessible pathway to gain Bitcoin exposure within a traditional brokerage account. Its significant AUM and consistent tracking performance in its first full year demonstrate its operational viability. The strategy remains focused on providing direct, passive exposure to Bitcoin, with ongoing efforts to maintain low tracking error and ensure the security of its digital asset holdings.

However, its future performance remains intrinsically linked to the highly volatile and evolving Bitcoin market, alongside ongoing regulatory developments in the digital asset space. The sponsor anticipates continued global regulatory scrutiny regarding digital assets, which could impact market sentiment and Bitcoin's price. The Trust will continue to monitor the competitive landscape and technological advancements in the digital asset ecosystem. Investors should remain vigilant regarding these external factors and the inherent risks associated with cryptocurrency investments.

Competitive Position

The Grayscale Bitcoin Mini Trust ETF operates within an increasingly competitive landscape for Bitcoin investment products. Following the approval of spot Bitcoin ETFs in the U.S., the market has seen several similar products introduced.

The Trust differentiates itself through several key aspects:

• Sponsor Reputation: Leveraging Grayscale's long-standing presence and experience in the digital asset investment space, including its history managing the Grayscale Bitcoin Trust (GBTC).
• Fee Structure: Its Sponsor Fee of 0.30% positions the Trust competitively within the spot Bitcoin ETF market, aiming to attract investors seeking cost-effective exposure.
• Operational Robustness: Its established operational framework, including relationships with institutional-grade custodians and administrators, provides a level of security and reliability critical for digital asset investments.
• Direct Bitcoin Exposure: As a spot Bitcoin ETF, it offers direct exposure to Bitcoin's price movements, distinguishing it from futures-based ETFs or other indirect investment vehicles.

The Trust competes directly with other spot Bitcoin ETFs available on major U.S. exchanges, as well as indirect investment vehicles like Bitcoin futures ETFs, private Bitcoin funds, and direct Bitcoin ownership through cryptocurrency exchanges. The competitive environment is dynamic, with ongoing innovation in product offerings and fee structures. The Trust's ability to maintain its competitive position will depend on its continued operational efficiency, fee competitiveness, and effective tracking of Bitcoin's price.