IBTOvsIBGCETF Comparison
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iShares iBonds Dec 2033 Term Treasury ETF (IBTO) and iShares iBonds Dec 2046 Term Treasury ETF (IBGC) belong to the same industry segment: US Government Bonds. Both ETFs have the same top 2 sector exposures: Sovereign and Non-Corporate. Both IBTO and IBGC have the same Total Expense Ratio (TER) of 0.07%. Run a side-by-side ETF comparison of IBTO and IBGC below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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IBTO vs IBGC performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/03/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IBTO IBGC | -0.22%+0.31% | -0.58%-2.04% | -1.13%n/a | +0.29%n/a | +10.80%n/a | n/an/a |
| Flows | IBTO IBGC | +$24M+$20M | +$32M+$22M | +$70M- | +$113M- | +$463M- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IBTO IBGC | +4.21%+8.72% | +4.17%n/a | +6.28%n/a | n/an/a |
| Max drawdown | IBTO IBGC | -1.68%-5.17% | -3.64%n/a | -6.89%n/a | n/an/a |
| Max drawdown duration | IBTO IBGC | 66d66d | 186dn/a | 318dn/a | n/an/a |
Trading data
IBTO | IBGC | |
Last sale 9/4/2026 at 1:30 PM | $23.59 | $23.99 |
| Previous close 09/03/2026 | $23.61 | $23.96 |
| Consolidated volume 09/03/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 5, 2026
1-year trailing difference
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IBTO | IBGC | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/4/2026 at 1:30 PM
Live
Closed
IBTO | IBGC | |
|---|---|---|
| Last price | $23.59 | $23.99 |
| 1D performance | -0.10% | +0.11% |
| AuM | $483.99 M | $29.94 M |
| E/R | 0.07% | 0.07% |
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Exposure
Countries
IBTO
USA
100%
Other
0%
IBGC
USA
100%
Other
-0%
Sectors
IBTO
Sovereign
99.97%
Other
0.03%
IBGC
Sovereign
99.99%
Other
0.01%
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Diversification
IBTO
Total weight of top 11 holdings out of 11
100%
IBGC
Total weight of top 7 holdings out of 7
100%
Top 15 holdings
Data as of July 31, 2026
IBTO
USA, Notes 4.5% 15nov2033, USD (F-2033)
17.44%
USA, Notes 3.875% 15aug2033, USD (E-2033)
15.72%
USA, Notes 3.5% 15feb2033, USD (B-2033)
14.35%
USA, Notes 3.375% 15may2033, USD (C-2033)
13.86%
USA, Notes 4.25% 31mar2033, USD (J-2033)
7.69%
USA, Notes 4.25% 30jun2033, USD (M-2033)
6.48%
USA, Notes 3.75% 28feb2033, USD (H-2033)
6.41%
USA, Notes 4.25% 31may2033, USD (L-2033)
6.38%
USA, Notes 4% 31jan2033, USD (G-2033)
6.19%
USA, Notes 4.125% 30apr2033, USD (K-2033)
5.45%
BlackRock Cash Funds - Treasury
0.03%
IBGC
USA, Bonds 4.625% 15feb2046, USD
30.78%
USA, Bonds 5% 15may2046, USD
22.03%
USA, Bonds 2.25% 15aug2046, USD
15.69%
USA, Bonds 2.5% 15feb2046, USD
12.45%
USA, Bonds 2.5% 15may2046, USD
12.44%
USA, Bonds 2.875% 15nov2046, USD
6.60%
BlackRock Cash Funds - Treasury
0.01%
Frequently asked questions about IBTO and IBGC
Which ETF is bigger: IBTO or IBGC?
As of September 3, 2026, IBTO holds $483.99 M in assets under management (AUM), while IBGC manages $29.94 M.
What sectors do the IBTO and IBGC ETFs invest in?
IBTO leans toward sectors like Sovereign. Meanwhile, IBGC focuses on Sovereign.
What are the top holdings of the IBTO ETF and IBGC ETF?
IBTO top holdings include USA, Notes 4.5% 15nov2033, USD (F-2033), USA, Notes 3.875% 15aug2033, USD (E-2033) and USA, Notes 3.5% 15feb2033, USD (B-2033). IBGC holds in its top three: USA, Bonds 4.625% 15feb2046, USD, USA, Bonds 5% 15may2046, USD and USA, Bonds 2.25% 15aug2046, USD.
Which ETF is more diversified: IBTO or IBGC?
IBTO has 11 securities and IBGC has 7 securities.
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