IBIT vs FBTC: fees, size and flows compared
IBIT and FBTC charge the same 0.25% expense ratio, so cost does not separate them. IBIT is the larger fund, about 4.5× the size of FBTC: $66.28B in net assets against $14.76B. Custody differs: IBIT holds its Bitcoin with Coinbase Custody Trust Company, LLC, FBTC with Fidelity Digital Asset Services, LLC.
IBIT vs FBTC
2 funds · Bitcoin
Cumulative net flow · last 30 trading days
IBIT selected — click a fund chip or a line to bring it forward
$M from zero at the start of the period · selected fund in black, others grey · T+1
| 2 funds |  IBITiShares Bitcoin Trust | FBTCFidelity Wise Origin Bitcoin |
|---|---|---|
| Overview | ||
| Issuer | BlackRock | Fidelity |
| Asset | Bitcoin | Bitcoin |
| Exchange | NASDAQ | CBOE |
| Launched | 11 Jan 2024 | 11 Jan 2024 |
| Custodian | Coinbase Custody Trust Company, LLC | Fidelity Digital Asset Services, LLC |
| Storage | Cold storage (institutional custody via Coinbase Prime) | Cold storage (Fidelity Digital Assets) |
| Costs | ||
| Expense ratio | 0.25% | 0.25% |
| Size | ||
| Net assets | $66.28B largest | $14.76B |
| Flows | ||
| Last dayFri 9 Oct | +$22.4Mlargest inflow | −$3.6M |
| 5 days | +$1.0M | −$380.3M |
| YTD | +$3.64B | −$1.60B |
| Cumulative | +$65.73B | +$10.52B |
| Last 20 days | ||
| Price | ||
| Share price | $46.75 +1.07% | $71.87 +1.19% |
| 7 days | −2.27% | −2.23% |
| Clients | ||
| Average entry | $81,018 | $77,519 |
| Avg entry vs close, % | +2.6% | +7.2% |
Fees
IBIT and FBTC charge the same 0.25% expense ratio, so cost does not separate them.
Size and flows
IBIT is the larger fund, about 4.5× the size of FBTC: $66.28B in net assets against $14.76B.
Since launch, net flows into IBIT total +$65.73B and into FBTC +$10.52B.
Over the last 20 trading days to 9 Oct 2026, net flows were +$1.73B for IBIT and +$233.3M for FBTC.
Custody
IBIT: Coinbase Custody Trust Company, LLC, cold storage (institutional custody via Coinbase Prime). FBTC: Fidelity Digital Asset Services, LLC, cold storage (Fidelity Digital Assets).
Where the numbers come from
Daily flows are calculated from the shares outstanding and NAV each issuer publishes, and checked against Farside and SoSoValue. Net assets are the latest figure from the issuer. The expense ratio is the sponsor fee from the fund prospectus; temporary fee waivers are not shown.