IBGBvsTLTETF Comparison
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iShares iBonds Dec 2045 Term Treasury ETF (IBGB) and iShares 20+ Year Treasury Bond ETF (TLT) belong to the same industry segment: US Government Bonds. Both ETFs have the same top 2 sector exposures: Sovereign and Non-Corporate. IBGB is less expensive with a Total Expense Ratio (TER) of 0.07%, versus 0.15% for TLT. IBGB is down -4.41% year-to-date (YTD) with +$2M in YTD flows. TLT performs worse with -5.08% YTD performance, and +$3.12B in YTD flows. Run a side-by-side ETF comparison of IBGB and TLT 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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IBGB vs TLT performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/16/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IBGB TLT | -0.60%-0.69% | -3.49%-3.86% | -4.41%-5.08% | -6.57%-8.34% | n/a+5.47% | n/a-34.32% |
| Flows | IBGB TLT | -+$228M | -+$6.29B | +$2M+$3.12B | +$2M+$2.28B | -+$12.12B | -+$49.51B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IBGB TLT | +8.99%+10.41% | +8.19%+9.32% | n/a+12.82% | n/a+15.43% |
| Max drawdown | IBGB TLT | -6.59%-7.66% | -10.77%-12.42% | n/a-16.55% | n/a-43.68% |
| Max drawdown duration | IBGB TLT | 89d89d | 229d229d | n/a760d | n/a1776d |
Trading data
IBGB | TLT | |
Last sale 10/16/2026 at 1:30 PM | $22.77 | $80.05 |
| Previous close 10/15/2026 | $22.75 | $79.97 |
| Consolidated volume 10/15/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of October 18, 2026
1-year trailing difference
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IBGB | TLT | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/16/2026 at 1:30 PM
Live
Closed
IBGB | TLT | |
|---|---|---|
| Last price | $22.77 | $80.05 |
| 1D performance | +0.07% | +0.10% |
| AuM | $9.10 M | $47.01 B |
| E/R | 0.07% | 0.15% |
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Exposure
Countries
IBGB
USA
100.8%
Other
-0.8%
TLT
USA
99.66%
Other
0.34%
Sectors
IBGB
Sovereign
99.56%
Other
0.44%
TLT
Sovereign
98.58%
Other
1.42%
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Diversification
IBGB
Total weight of top 9 holdings out of 9
100.8%
TLT
Total weight of top 15 holdings out of 15
58.22%
Top 15 holdings
Data as of August 31, 2026
IBGB
USA, Bonds 5% 15may2045, USD
18.97%
USA, Bonds 4.875% 15aug2045, USD
18.49%
USA, Bonds 4.75% 15feb2045, USD
18.14%
USA, Bonds 4.625% 15nov2045, USD
18.11%
USA, Bonds 2.5% 15feb2045, USD
10.06%
USA, Bonds 2.875% 15aug2045, USD
6.51%
USA, Bonds 3% 15may2045, USD
5.07%
USA, Bonds 3% 15nov2045, USD
4.22%
BlackRock Cash Funds - Treasury
1.23%
TLT
USA, Bonds 4.75% 15may2055, USD
4.51%
USA, Bonds 4.625% 15may2054, USD
4.28%
USA, Bonds 4.125% 15aug2053, USD
4.19%
USA, Bonds 4.75% 15feb2056, USD
4.14%
USA, Bonds 4.25% 15feb2054, USD
4.04%
USA, Bonds 5% 15may2056, USD
4.03%
USA, Bonds 4.75% 15nov2053, USD
3.98%
USA, Bonds 4.25% 15aug2054, USD
3.95%
USA, Bonds 4.625% 15nov2055, USD
3.85%
USA, Bonds 4.625% 15feb2055, USD
3.81%
USA, Bonds 4.5% 15nov2054, USD
3.80%
USA, Bonds 1.875% 15nov2051, USD
3.80%
USA, Bonds 2% 15aug2051, USD
3.35%
USA, Bonds 4.75% 15aug2055, USD
3.31%
USA, Bonds 3.625% 15may2053, USD
3.16%
Frequently asked questions about IBGB and TLT
How have the IBGB and TLT ETFs performed in 2026?
As of October 16, 2026, IBGB is down -4.41% year-to-date (YTD), while TLT has lost -5.08%. That puts IBGB better performer ahead so far this year.
Which ETF is attracting more investor money: IBGB or TLT?
Year-to-date, the IBGB ETF saw +$2M in flows, compared to +$3.12B for TLT.
Which ETF is more volatile: IBGB or TLT?
Over the past year, IBGB had a volatility of 8.19%, while TLT experienced 9.32%.
Which ETF is bigger: IBGB or TLT?
As of October 16, 2026, IBGB holds $9.10 M in assets under management (AUM), while TLT manages $47.01 B.
What sectors do the IBGB and TLT ETFs invest in?
IBGB leans toward sectors like Sovereign. Meanwhile, TLT focuses on Sovereign.
What are the top holdings of the IBGB ETF and TLT ETF?
IBGB top holdings include USA, Bonds 5% 15may2045, USD, USA, Bonds 4.875% 15aug2045, USD and USA, Bonds 4.75% 15feb2045, USD. TLT holds in its top three: USA, Bonds 4.75% 15may2055, USD, USA, Bonds 4.625% 15may2054, USD and USA, Bonds 4.125% 15aug2053, USD.
Which ETF is more diversified: IBGB or TLT?
IBGB has 9 securities. TLT has 48 securities and a top 15 weight of 58.22%.
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