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ARK 21Shares Bitcoin ETF
A mid-sized bitcoin ETF from ARK and 21Shares with multi-custodian design.
$10,000 invested, compounded for 30 years.
Compound-fee impact at an assumed 8% annual return. The expense-ratio benchmarks (lowest + category median) come from the live cohort in /compare/etfs; the 8% return is illustrative, not a forecast.
The full custody chain.
When you buy ARKBshares, you don't hold Bitcoin — you hold a claim on the trust. The trust holds a claim on the custodian. The custodian holds the actual keys.
How ARKB compares to the other ETFs.
ARKB is everywhere.
Listed on Cboe BZX, available in essentially every U.S. brokerage. Compatible with IRA, 401(k), and HSA accounts.
The 8-factor breakdown.
Annual sponsor fee — the largest, most certain drag on returns
Trading depth and spreads for getting in and out at scale
How tightly the fund tracks spot bitcoin
Market-price premium or discount to NAV — arb efficiency
Assets under management — viability and closure risk
ARKB combines 21Shares digital-asset product experience with ARK Invest distribution and thematic-investing brand recognition.
Clarity of fee structure — waivers, expirations, hidden costs
ARKB discloses a multi-custodian structure across Anchorage, BitGo, and Coinbase Custody.
Overall score = 8*25% + 6*20% + 8*12% + 8*10% + 4*13% + 6*8% + 8*7% + 10*5% = 7.0. The calibrated fee rubric gives more credit to a low-20 bps fee while still reserving elite fee scores for near-zero or lower-fee products.
Questions readers actually ask about ARKB.
Is owning ARKB the same as owning Bitcoin?
Functionally for most purposes, yes — you get price exposure backed 1:1 by BTC held in cold storage. Mechanically, no — you own shares in a trust, not the underlying Bitcoin. The difference matters in three scenarios: (1) self-custody control, (2) using BTC as collateral elsewhere, (3) keeping access if your brokerage fails.
Does ARKB pay dividends?
No. The trust holds Bitcoin, which doesn't generate yield. All returns come from price appreciation of the underlying.
What happens to my ARKB if ARK Invest / 21Shares fails?
The Bitcoin backing ARKB is held by Anchorage Digital Bank N.A. as a qualified custodian, legally separate from ARK Invest / 21Shares's operating funds. The trust's assets would not be claimable by ARK Invest / 21Shares's creditors.
Can I buy ARKB in my 401(k)?
Depends on your plan. Most modern plans that allow individual brokerage windows support it. Many default 401(k) menus don't.
The receipts.
Every figure on ARKB traces to a primary document. These are the ones we read — open any of them.
- 21Shares ARKB product page ↗Verified
Official page used for AUM, NAV, shares outstanding, fee, exchange, inception date, and custodian list.
- ARK ARKB fund page ↗Verified
ARK fund page confirms objective, fund name, sponsor relationship, and risk disclosures.
- StockAnalysis ARKB profile ↗Partial
Market-data snapshot used for price, volume, shares outstanding, expense ratio, exchange, and AUM cross-check.
Not investment advice. Pledge provides comparison data for educational purposes only; scores do not recommend buying, selling, or holding any ETF. Past performance does not guarantee future results. Review ARKB's current prospectus before investing — expense ratios, fee waivers, AUM, and custodian arrangements can change after a score is published.