IBTLvsZROZETF Comparison

ETF 1

IBTL

iShares iBonds Dec 2031 Term Treasury ETF

This fund is part of

US Government Bonds

+0.07%

Full IBTL fund page

ETF 2

ZROZ

PIMCO 25+ Year Zero Coupon U.S. Treasury Index ETF

This fund is part of

US Government Bonds

+0.07%

Full ZROZ fund page

iShares iBonds Dec 2031 Term Treasury ETF (IBTL) and PIMCO 25+ Year Zero Coupon U.S. Treasury Index ETF (ZROZ) belong to the same industry segment: US Government Bonds. IBTL's top 2 sector exposures are Sovereign and Non-Corporate. In contrast, ZROZ's top sector exposures are Sovereign. IBTL is less expensive with a Total Expense Ratio (TER) of 0.07%, versus 0.15% for ZROZ. IBTL is down -1.68% year-to-date (YTD) with +$321M in YTD flows. ZROZ performs worse with -9.49% YTD performance, and +$587M in YTD flows. Run a side-by-side ETF comparison of IBTL and ZROZ 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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IBTL vs ZROZ performance and flow charts

Performance

Cumulative Flows

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Data Services

Historic performance and flows

Data as of 10/16/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	IBTL ZROZ	+0.34%-2.19%	-1.44%-6.62%	-1.68%-9.49%	-1.76%-15.83%	+13.77%-7.17%	-5.94%-54.31%
Flows	IBTL ZROZ	+$19M+$340M	+$134M+$708M	+$321M+$587M	+$337M+$499M	+$647M+$1.36B	+$772M+$2.36B

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	IBTL ZROZ	+3.36%+18.45%	+3.35%+15.72%	+5.29%+20.95%	+7.34%+23.77%
Max drawdown	IBTL ZROZ	-2.68%-13.65%	-4.29%-22.82%	-5.55%-33.12%	-20.62%-61.27%
Max drawdown duration	IBTL ZROZ	52d89d	229d359d	198d760d	1776d1776d

Trading data

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	IBTL	ZROZ
Last sale 10/16/2026 at 1:30 PM	$224.77	$56.63
Previous close 10/16/2026	$226.15	$56.66
Consolidated volume 10/16/2026
Average volume 30 days
Average discount or premium 30 days
Average Bid/Ask spread 30 days

Replication quality

Data as of October 19, 2026

1-year trailing difference

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	IBTL	ZROZ
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 10/16/2026 at 1:30 PM

Live

Closed

	IBTL	ZROZ
Last price	$224.77	$56.63
1D performance	-0.61%	-0.05%
AuM	$749.38 M	$1.98 B
E/R	0.07%	0.15%

Characteristics

	IBTL	ZROZ
Management strategy	Passive	Passive
Provider	iShares	PIMCO
Benchmark	ICE 2031 Maturity US Treasury Index	ICE BofA Long US Treasury Principal STRIPS Index
N° of holdings	25	21
Asset class	Fixed Income	Bonds
Trailing 12m distribution yield	Join	Join
Inception date	July 15, 2021	October 30, 2009
ESG	No	No

More IBTL data on Trackinsight

More ZROZ data on Trackinsight

Exposure

Countries

IBTL

USA

95.2%

Other

4.8%

ZROZ

USA

95.56%

Other

4.44%

Sectors

IBTL

Sovereign

95.04%

Other

4.96%

ZROZ

Sovereign

95.56%

Other

4.44%

Diversification

IBTL

Total weight of top 15 holdings out of 15

74.38%

ZROZ

Total weight of top 15 holdings out of 15

78.28%

Top 15 holdings

Data as of August 31, 2026

IBTL

USA, Notes 1.25% 15aug2031, USD (E-2031)

6.96%

USA, Notes 1.375% 15nov2031, USD (F-2031)

6.87%

USA, Notes 1.625% 15may2031, USD (C-2031)

6.49%

USA, Notes 1.125% 15feb2031, USD (B-2031)

6.45%

USA, Notes 4.125% 30jun2031, USD (AA-2031)

5.11%

USA, Notes 4.125% 31may2031, USD (Z-2031)

5.00%

USA, Notes 3.875% 31mar2031, USD (W-2031)

4.83%

USA, Notes 3.875% 30apr2031, USD (Y-2031)

4.83%

USA, Notes 3.75% 31jan2031, USD (U-2031)

4.73%

USA, Notes 3.5% 28feb2031, USD (V-2031)

4.67%

US91282CRK98

4.42%

USA, Notes 4.375% 31jul2031, USD (AB-2031)

3.59%

USA, Notes 4.625% 31may2031, USD (L-2031)

3.54%

USA, Notes 4.625% 30apr2031, USD (K-2031)

3.45%

USA, Notes 4.125% 31jul2031, USD (N-2031)

3.43%

ZROZ

USA, STRIPS 0% 15feb2052, USD (10957D)

5.67%

USA, STRIPS 0% 15may2052, USD (10958D)

5.52%

USA, STRIPS 0% 15nov2051, USD (10957D)

5.42%

USA, STRIPS 0% 15aug2052, USD (10958D)

5.37%

USA, STRIPS 0% 15feb2053, USD (10958D)

5.35%

USA, STRIPS 0% 15nov2052, USD (10958D)

5.32%

USA, STRIPS 0% 15nov2053, USD (10958D)

5.32%

USA, STRIPS 0% 15aug2051, USD (10956D)

5.25%

USA, STRIPS 0% 15aug2053, USD (10958D)

5.23%

USA, STRIPS 0% 15may2053, USD (10958D)

5.23%

USA, STRIPS 0% 15feb2055, USD (10954D)

5.09%

USA, STRIPS 0% 15feb2056, USD (10955D)

4.99%

USA, STRIPS 0% 15nov2054, USD (10957D)

4.94%

USA, STRIPS 0% 15may2054, USD (10957D)

4.85%

USA, STRIPS 0% 15aug2055, USD (10957D)

4.73%

Frequently asked questions about IBTL and ZROZ

How have the IBTL and ZROZ ETFs performed in 2026?

As of October 16, 2026, IBTL is down -1.68% year-to-date (YTD), while ZROZ has lost -9.49%. That puts IBTL better performer ahead so far this year.

Which ETF is attracting more investor money: IBTL or ZROZ?

Year-to-date, the IBTL ETF saw +$321M in flows, compared to +$587M for ZROZ.

Which ETF is more volatile: IBTL or ZROZ?

Over the past year, IBTL had a volatility of 3.35%, while ZROZ experienced 15.72%.

Which ETF is bigger: IBTL or ZROZ?

As of October 16, 2026, IBTL holds $749.38 M in assets under management (AUM), while ZROZ manages $1.98 B.

What sectors do the IBTL and ZROZ ETFs invest in?

IBTL leans toward sectors like Sovereign. Meanwhile, ZROZ focuses on Sovereign.

What are the top holdings of the IBTL ETF and ZROZ ETF?

IBTL top holdings include USA, Notes 1.25% 15aug2031, USD (E-2031), USA, Notes 1.375% 15nov2031, USD (F-2031) and USA, Notes 1.625% 15may2031, USD (C-2031). ZROZ holds in its top three: USA, STRIPS 0% 15feb2052, USD (10957D), USA, STRIPS 0% 15may2052, USD (10958D) and USA, STRIPS 0% 15nov2051, USD (10957D).

IBTLvsZROZETF Comparison

iShares iBonds Dec 2031 Term Treasury ETF

PIMCO 25+ Year Zero Coupon U.S. Treasury Index ETF

IBTL vs ZROZ performance and flow charts

Performance

Cumulative Flows

Get all the metrics on this page, and more, through a reliable ETF data feed

Countries

Sectors

Diversification

Top 15 holdings

How have the IBTL and ZROZ ETFs performed in 2026?

As of October 16, 2026, IBTL is down -1.68% year-to-date (YTD), while ZROZ has lost -9.49%. That puts IBTL better performer ahead so far this year.

Which ETF is attracting more investor money: IBTL or ZROZ?

Year-to-date, the IBTL ETF saw +$321M in flows, compared to +$587M for ZROZ.

Which ETF is more volatile: IBTL or ZROZ?

Over the past year, IBTL had a volatility of 3.35%, while ZROZ experienced 15.72%.

Which ETF is bigger: IBTL or ZROZ?

As of October 16, 2026, IBTL holds $749.38 M in assets under management (AUM), while ZROZ manages $1.98 B.

What sectors do the IBTL and ZROZ ETFs invest in?

IBTL leans toward sectors like Sovereign. Meanwhile, ZROZ focuses on Sovereign.

What are the top holdings of the IBTL ETF and ZROZ ETF?

Which ETF is more diversified: IBTL or ZROZ?

IBTL holds 25 securities with 74.38% of its assets in the top 15. ZROZ has 21 securities and a top 15 weight of 78.28%.

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