ARKB filed its annual 10-K on March 2, 2026 for the year ended December 31, 2025. The filing is thin by design, and that is the read.
There are no revenues, no operating segments, no management discussion of product strategy, and no insider compensation tables to parse. What the document gives you is the annual snapshot that anchors ARKB's regulatory baseline: custody arrangements, fee structure, trust mechanics, and risk factors tied to holding Bitcoin inside a registered wrapper.
The Filing Is Thin by Design
Spot Bitcoin ETF 10-Ks read differently from operating company filings. ARKB holds Bitcoin. It does not mine it, lend it, or generate revenue from it. The trust passes Bitcoin price exposure to shareholders and charges a management fee. The annual report reflects that structure: trust agreement, custodian relationship, authorized participant mechanism, and the risk factors attached to Bitcoin custody and regulatory treatment.
The March 2 filing covers December 31, 2025 as the period-end date. The filing is the annual report and serves as the source for annual fundamentals, risk-factor review, and filing-risk scoring. The SEC primary document sits in EDGAR for entity 1869699.
Exposure Score Captures the Whole Case
ARKB's BTC Exposure Score is 90. The fund holds Bitcoin, tracks its price, and has no other economic activity to dilute that relationship. A score in the 75-100 band means Bitcoin is the entire research case, and for a pure spot wrapper that is literally true. No operating business offsets a Bitcoin drawdown, and no alternative revenue stream complicates the read when prices compress.
The practical consequence: reading ARKB's 10-K through an earnings or balance-sheet lens misses what the filing is for. The things that move the wrapper are AUM trajectory, fee competitiveness against IBIT and FBTC, trading liquidity, and the custody and regulatory risk factors disclosed in the annual document.
Filing Risk in the Watchlist Range
Filing Risk sits at 38, in the watchlist band. That reading is not a distress signal. For a spot ETF, it reflects the disclosure complexity around Bitcoin custody, the evolving regulatory environment for digital-asset products, and the recency of the product category. The trust structure is simple. The risk factors attached to it are not: custody concentration, Bitcoin network risk, and possible adverse regulatory action on spot ETF treatment all show up in the annual filing and push the disclosure cadence above a plain-vanilla equity ETF.
Event Momentum sits at 100, driven by the annual report filing itself as the most recent material event. That is a recency reading, not an operational development inside the trust.
Price Context Frames the Category Backdrop
As of May 18, 2026, ARKB is down about 12% year to date and roughly 17% over the trailing six months. The 52-week high of $41.99 hit on October 6, 2025, now 224 days back. The 90-day window shows a recovery of approximately 16%, capturing the move off the February 5, 2026 low of $20.66.
The short-term trend is an uptrend while the long-term trend remains a downtrend. The fund trades above its 50-day moving average but below both its 20-day and 200-day averages. That is a partial recovery inside a broader drawdown, which fits the macro tape: Bitcoin dominance at 58.2% signals a Bitcoin-led market, and the crypto Fear and Greed reading of 28 reflects category-wide caution. Bitcoin's 30-day realized volatility at 28.4% annualized is calm by historical standards, so the current level is not the product of a volatility spike.
ARKB's own 30-day realized volatility runs at roughly 31% annualized, modestly above Bitcoin's over the same window, consistent with the liquidity dynamics of a wrapper trading around net asset value.
What the Annual Filing Cannot Tell You
The 10-K sets the legal and structural baseline. It does not tell you how ARKB's AUM compares to IBIT or FBTC this quarter, whether authorized participant activity is concentrating or broadening, or how the fee structure is holding up against cheaper peers. Those questions require flow and AUM data that arrive through other channels.
The annual report's real value for ARKB is as a change-detection document. If the custody arrangement shifts, if new risk factors appear around regulatory treatment, or if the fee structure changes, those disclosures surface here first. That is the right frame for reviewing a spot ETF annual filing year over year.
Research only. Not investment advice.