Verdict: Choose IBIT when trading liquidity and fund scale matter most. Choose FBTC if you prefer Fidelity’s ecosystem or its vertically integrated custody model. Both charge 0.25% annually, both hold Bitcoin, and neither protects you from Bitcoin’s large price swings. For most buy-and-hold investors, the difference is smaller than the decision to own Bitcoin exposure at all.
Original illustration by Best ETF to Buy Now. It is conceptual and does not show live fund data or expected returns.
IBIT vs FBTC at a Glance
| Feature | IBIT | FBTC | Practical edge |
|---|---|---|---|
| Full name | iShares Bitcoin Trust ETF | Fidelity Wise Origin Bitcoin Fund | Tie |
| Sponsor / issuer | BlackRock / iShares | Fidelity | Preference |
| Annual fee | 0.25% | 0.25% | Tie |
| Net assets | $58.78B on Aug. 21, 2026 | $10.8B in Fidelity’s recent table | IBIT |
| Published trading data | 0.03% 30-day median spread; 46.1M average daily shares on Aug. 21 | Check current quote at execution | IBIT on documented scale |
| Benchmark | CME CF Bitcoin Reference Rate – New York Variant | Fidelity Bitcoin Reference Rate | No certain return edge |
| Bitcoin custody | Coinbase Custody Trust Company | Fidelity Digital Assets | Different operating models |
| Launch | January 2024 | January 2024 | Tie |
Data snapshot: August 25, 2026. Assets and trading statistics move with Bitcoin’s price and investor flows. Confirm them on each issuer’s website before placing an order.
How We Compared IBIT and FBTC
We used the issuers’ published product pages, fact sheets and prospectus language. The comparison focuses on costs, tradability, custody, benchmark design and product structure. We did not infer a winner from a short return period because both products are designed to follow the same underlying asset.
This distinction matters: a one-week performance gap may come from valuation timing, market price versus NAV, fees or rounding. It is not evidence that one sponsor can consistently make Bitcoin perform better.
Fees: IBIT and FBTC Are Tied at 0.25%
There is no expense-ratio winner. BlackRock lists a 0.25% sponsor fee for IBIT. Fidelity’s fund table and FBTC prospectus also state 0.25%.
At that rate, the simple annual fee estimate is:
| Amount invested | Approximate annual fee at 0.25% |
|---|---|
| $1,000 | $2.50 |
| $10,000 | $25.00 |
| $50,000 | $125.00 |
These are illustrations, not separate bills. The trust generally pays its fee from its assets, reducing the Bitcoin represented by each share over time. The dollar cost changes as the investment value changes.
Investors comparing more than these two products should also read our spot Bitcoin ETF fee comparison. A lower headline fee can save money over a long holding period, but spreads may matter more for a short trade.
Liquidity: IBIT Has the Clearer Advantage
IBIT wins on documented scale and secondary-market liquidity. BlackRock reported $58.78 billion in net assets, 46.1 million shares of 30-day average volume and a 0.03% 30-day median bid-ask spread as of August 21, 2026. Fidelity’s recent institutional table listed FBTC at $10.8 billion in net assets.
FBTC is not small. A multibillion-dollar product can still be practical for ordinary orders. But IBIT’s greater activity may help investors seeking tighter execution during normal market conditions, especially for large or frequent trades.
Do not confuse share volume with dollar liquidity. IBIT and FBTC have different share prices, so the same number of shares represents a different dollar amount. Check the live bid and ask just before trading, and consider a limit order when crypto markets are moving quickly.
Custody: Different Models, No Risk-Free Choice
FBTC stands out for investors who value Fidelity’s in-house operating chain. Fidelity states that Fidelity Digital Assets provides custody for FBTC. IBIT uses Coinbase Custody Trust Company, according to its filings and product materials.
The distinction is real, but it should not be simplified into “safe” and “unsafe.” Both structures depend on controls around private keys, service providers, cybersecurity and authorized participant activity. Shares are also securities held through a brokerage account; they do not give you a private key or the ability to withdraw the trust’s Bitcoin.
Read the custody and risk-factor sections in the current prospectus. Brand familiarity is not a substitute for understanding the structure.
Benchmark and Tracking: Expect Similar Exposure, Not Identical Returns
Neither benchmark has a proven everyday advantage for a typical long-term investor. IBIT references the CME CF Bitcoin Reference Rate – New York Variant. FBTC uses the Fidelity Bitcoin Reference Rate.
Both aim to turn fragmented spot-market prices into a repeatable daily valuation. Their sampling and calculation methods differ, so NAV changes can vary slightly on a given day. Market-price returns may differ again because ETF shares trade throughout U.S. market hours while Bitcoin trades around the clock.
Over longer periods, fees, operational costs and tracking differences gradually separate each product from spot Bitcoin. The important check is whether the premium or discount, spread and tracking remain controlled—not which fund won yesterday by a few basis points.
Which Fund Fits Which Investor?
Choose IBIT if you trade often
IBIT is the practical first choice when you expect to enter and exit more often, use options, or place larger orders. Its scale and published trading statistics are the main reasons—not a forecast that it will produce a higher Bitcoin return.
Choose FBTC if Fidelity integration matters
FBTC may fit an investor who already researches and holds assets at Fidelity and prefers Fidelity Digital Assets as the custodian. Check your brokerage’s current commission rules and whether either product has platform-specific restrictions.
Choose neither if a large drawdown would break your plan
Both funds hold a single highly volatile asset. Diversification across two Bitcoin products does not diversify away Bitcoin risk. A reader building a core portfolio should first compare this exposure with a three-fund portfolio and review our ETF guide for beginners.
Does Fund Flow Change the Choice?
Fund flows help show where investors are concentrating activity, but they do not make an ETF safer or guarantee better returns. A large inflow can coincide with a falling Bitcoin price; redemptions can occur during a rally.
Our dated August 2026 Bitcoin ETF flow analysis explains how incomplete issuer reporting can also change a daily total. Use flow data as market context, not as the sole reason to select IBIT or FBTC.
Frequently Asked Questions
Is IBIT better than FBTC?
IBIT is the stronger default for frequent trading because it is substantially larger and its recent published bid-ask spread was very tight. FBTC remains a reasonable long-term alternative with the same 0.25% expense ratio and Fidelity-managed custody.
Do IBIT and FBTC hold real Bitcoin?
Both products hold Bitcoin and seek to track a Bitcoin reference rate before fees and expenses. You own exchange-traded shares, not Bitcoin that can be transferred to a personal wallet.
Which is cheaper, IBIT or FBTC?
Neither has an expense-ratio advantage as of August 25, 2026. Both state a 0.25% annual fee. Your spread, order type and brokerage terms can still change the actual cost of buying and selling.
Final Recommendation
IBIT is our default choice between the two because its much larger asset base and strong published liquidity data make execution easier to evaluate. FBTC is a credible alternative for investors who prefer Fidelity’s ecosystem and custody model. Since the annual fees match, make the final decision from a live spread quote and the current prospectus—not a one-day return chart.
Sources
- BlackRock: iShares Bitcoin Trust ETF (IBIT), fund data as of August 21, 2026.
- Fidelity: ETF and ETP pricing table, accessed August 25, 2026.
- Fidelity: FBTC fact sheet, March 31, 2026.
- Fidelity: FBTC prospectus, accessed August 25, 2026.
- SEC Investor.gov: Exchange-traded products providing exposure to Bitcoin and Ether.
Disclosure: This article is educational and does not provide individualized investment, tax or legal advice. Spot Bitcoin products can lose most or all of their value. Fees, assets, spreads and product terms can change.