ARK 21Shares ARKB Bitcoin ETF review 2026: 0.21% expense ratio — cheapest major Bitcoin ETF. Cathie Wood + 21Shares partnership, $4B+ AUM, Coinbase custody, vs IBIT and FBTC.
Fidelity Wise Origin Bitcoin Fund (FBTC) is the second-largest spot Bitcoin ETF in the United States, trailing only BlackRock's IBIT in total assets under management. Launched January 11, 2024 alongside the initial wave of spot Bitcoin ETF approvals, FBTC reached $20+ billion in AUM within its first year — a remarkable adoption rate driven by Fidelity's massive existing client base and its unique self-custody model. Here's a complete review of FBTC for 2026.
FBTC at a Glance
| Feature | Details |
|---|---|
| Full name | Fidelity Wise Origin Bitcoin Fund |
| Ticker | FBTC |
| Exchange | NYSE Arca |
| Expense ratio | 0.25% annually |
| AUM (2026) | $20+ billion |
| Custodian | Fidelity Digital Assets (self-custody) |
| Launch date | January 11, 2024 |
| Minimum investment | 1 share (~$50–$100 depending on BTC price) |
What Makes FBTC Different: Self-Custody
Fidelity's most distinctive feature is that FBTC is the only major Bitcoin ETF where the issuer custodies Bitcoin using its own infrastructure. Every other major ETF (BlackRock's IBIT, ARK21Shares's ARKB, etc.) uses Coinbase Custody as their third-party custodian.
Fidelity Digital Assets was established in 2018 — years before the ETF launches — and built its own Bitcoin custody infrastructure from the ground up. This means:
- No Coinbase counterparty risk: FBTC doesn't depend on Coinbase remaining solvent and operational
- Direct institutional-grade custody: Fidelity's cold storage and security infrastructure is proprietary
- Regulatory standing: As a trust company subsidiary of Fidelity, Fidelity Digital Assets operates under established financial regulation
For investors specifically concerned about Coinbase concentration risk across multiple ETFs, FBTC is the only major alternative.
FBTC Expense Ratio: 0.25%
FBTC charges 0.25% annually — identical to BlackRock's IBIT. This puts both products tied as the lowest-cost major Bitcoin ETFs.
Cost comparison across major Bitcoin ETFs (2026):
| ETF | Expense Ratio | Custodian |
|---|---|---|
| FBTC (Fidelity) | 0.25% | Fidelity Digital Assets |
| IBIT (BlackRock) | 0.25% | Coinbase |
| ARKB (ARK/21Shares) | 0.21% | Coinbase |
| BITB (Bitwise) | 0.20% | Coinbase |
| HODL (VanEck) | 0.20% | Gemini |
| GBTC (Grayscale) | 1.50% | Coinbase |
FBTC is tied for second on pure cost but wins on custodian diversification. BITB and ARKB are cheaper at 0.20-0.21% but use Coinbase custody.
FBTC vs. IBIT: The Key Comparison
For most investors choosing between the two market leaders:
| Factor | FBTC | IBIT |
|---|---|---|
| AUM | ~$20B | ~$65B+ |
| Expense ratio | 0.25% | 0.25% |
| Custodian | Fidelity Digital Assets | Coinbase |
| Liquidity | Very high | Highest |
| Tracking error | Minimal | Minimal |
| Fidelity account access | Native | Available |
| Charitable giving | Yes (via DAF) | Yes |
IBIT advantages: larger AUM means tighter bid-ask spreads and more liquidity. BlackRock's institutional distribution is unmatched.
FBTC advantages: custodian diversification (no Coinbase risk), native integration in Fidelity accounts, and Fidelity's longer track record in digital assets.
For Fidelity brokerage account holders, FBTC is the natural choice — seamless integration, same expense ratio, and you keep all assets within one custodian relationship.
Who Should Hold FBTC?
FBTC is the right choice for:
- Existing Fidelity brokerage or IRA account holders (seamless access, no new accounts)
- Investors specifically concerned about Coinbase counterparty concentration across other ETFs
- Institutional investors or RIAs who prefer Fidelity's established counterparty relationships
- 401(k) participants with Fidelity plans that offer FBTC (Fidelity has been expanding 401(k) Bitcoin access)
Consider alternatives if:
- Maximum liquidity is your priority (IBIT has deeper markets)
- You want the lowest absolute cost (BITB at 0.20%)
- You hold Bitcoin for ideological reasons (ETF gives no self-custody; consider hardware wallets)
FBTC in Retirement Accounts
FBTC is available in both taxable and tax-advantaged accounts:
- Traditional IRA: Pre-tax contributions, Bitcoin gains tax-deferred
- Roth IRA: Post-tax contributions, Bitcoin gains tax-free (qualified withdrawals)
- 401(k): Fidelity has been expanding FBTC access for workplace retirement plans
Holding FBTC in a Roth IRA is arguably the most tax-efficient way to get Bitcoin exposure through traditional brokerage infrastructure.
FBTC Performance and Tracking
FBTC tracks spot Bitcoin price with minimal tracking error. The 0.25% expense ratio represents the annual "drag" versus holding Bitcoin directly. On a $100,000 position, the annual cost is $250 — a small price for the simplicity of regulated brokerage access, no custody responsibility, and no private key management.
For comparison: direct Bitcoin ownership through an exchange has exchange fees, potential custody concerns, and complexity at tax time. FBTC generates a single 1099-B for tax reporting like any stock.
FBTC: The Bottom Line
FBTC is a high-quality product at a competitive price point, backed by one of the world's most trusted financial institutions. For investors who want Bitcoin exposure through a brokerage account, FBTC and IBIT are the two premier choices — essentially identical in cost, with the key differentiator being Fidelity's self-custody versus Coinbase's institutional custody.
For Fidelity account holders, FBTC is the obvious first choice. For investors at other brokerages, IBIT's superior liquidity often wins. Either way, both represent the gold standard for regulated Bitcoin exposure in 2026.
Rating: 4.5/5 — Top-tier product. Minor knock: slightly lower AUM vs. IBIT means marginally wider spreads in thin markets.