ZROZvsIBTLETF Comparison

ETF 1

ZROZ

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

This fund is part of

US Government Bonds

-0.23%

Full ZROZ fund page

ETF 2

IBTL

iShares iBonds Dec 2031 Term Treasury ETF

This fund is part of

US Government Bonds

-0.23%

Full IBTL fund page

PIMCO 25+ Year Zero Coupon U.S. Treasury Index ETF (ZROZ) and iShares iBonds Dec 2031 Term Treasury ETF (IBTL) belong to the same industry segment: US Government Bonds. ZROZ's top 1 sector exposures are Sovereign. In contrast, IBTL's top sector exposures are Sovereign and Non-Corporate. ZROZ is more expensive with a Total Expense Ratio (TER) of 0.15%, versus 0.07% for IBTL. ZROZ is down -7.56% year-to-date (YTD) with +$363M in YTD flows. IBTL performs better with -1.44% YTD performance, and +$324M in YTD flows. Run a side-by-side ETF comparison of ZROZ and IBTL 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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ZROZ vs IBTL performance and flow charts

Performance

Cumulative Flows

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Data Services

Historic performance and flows

Data as of 10/28/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	ZROZ IBTL	+4.94%+1.27%	-5.05%-0.99%	-7.56%-1.44%	-15.24%-1.41%	-0.69%+15.12%	-54.20%-5.84%
Flows	ZROZ IBTL	+$15M+$23M	+$517M+$115M	+$363M+$324M	+$306M+$337M	+$1.05B+$650M	+$2.14B+$776M

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	ZROZ IBTL	+19.90%+3.56%	+16.17%+3.42%	+20.74%+5.20%	+23.77%+7.34%
Max drawdown	ZROZ IBTL	-13.46%-2.68%	-22.75%-4.29%	-33.12%-5.55%	-61.27%-20.62%
Max drawdown duration	ZROZ IBTL	92d64d	365d241d	772d198d	1788d1788d

Trading data

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	ZROZ	IBTL
Last sale 10/29/2026 at 2:54 PM	$58.42	$19.72
Previous close 10/28/2026	$57.82	$228.38
Consolidated volume 10/28/2026
Average volume 30 days
Average discount or premium 30 days
Average Bid/Ask spread 30 days

Replication quality

Data as of October 29, 2026

1-year trailing difference

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

Main metrics

Last update 10/29/2026 at 2:54 PM

Live

Closed

	ZROZ	IBTL
Last price	$58.42	$19.72
1D performance	+1.04%	-91.37%
AuM	$1.80 B	$755.12 M
E/R	0.15%	0.07%

Characteristics

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

More ZROZ data on Trackinsight

More IBTL data on Trackinsight

Exposure

Countries

ZROZ

USA

95.56%

Other

4.44%

IBTL

USA

95.2%

Other

4.8%

Sectors

ZROZ

Sovereign

95.56%

Other

4.44%

IBTL

Sovereign

95.04%

Other

4.96%

Diversification

ZROZ

Total weight of top 15 holdings out of 15

78.28%

IBTL

Total weight of top 15 holdings out of 15

74.38%

Top 15 holdings

Data as of August 31, 2026

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%

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%

Frequently asked questions about ZROZ and IBTL

How have the ZROZ and IBTL ETFs performed in 2026?

As of October 28, 2026, ZROZ is down -7.56% year-to-date (YTD), while IBTL has lost -1.44%. That puts IBTL better performer ahead so far this year.

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

Year-to-date, the ZROZ ETF saw +$363M in flows, compared to +$324M for IBTL.

Which ETF is more volatile: ZROZ or IBTL?

Over the past year, ZROZ had a volatility of 16.17%, while IBTL experienced 3.42%.

Which ETF is bigger: ZROZ or IBTL?

As of October 28, 2026, ZROZ holds $1.80 B in assets under management (AUM), while IBTL manages $755.12 M.

What sectors do the ZROZ and IBTL ETFs invest in?

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

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

ZROZ top holdings include USA, STRIPS 0% 15feb2052, USD (10957D), USA, STRIPS 0% 15may2052, USD (10958D) and USA, STRIPS 0% 15nov2051, USD (10957D). IBTL holds in its top three: 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).

ZROZvsIBTLETF Comparison

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

iShares iBonds Dec 2031 Term Treasury ETF

ZROZ vs IBTL 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 ZROZ and IBTL ETFs performed in 2026?

As of October 28, 2026, ZROZ is down -7.56% year-to-date (YTD), while IBTL has lost -1.44%. That puts IBTL better performer ahead so far this year.

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

Year-to-date, the ZROZ ETF saw +$363M in flows, compared to +$324M for IBTL.

Which ETF is more volatile: ZROZ or IBTL?

Over the past year, ZROZ had a volatility of 16.17%, while IBTL experienced 3.42%.

Which ETF is bigger: ZROZ or IBTL?

As of October 28, 2026, ZROZ holds $1.80 B in assets under management (AUM), while IBTL manages $755.12 M.

What sectors do the ZROZ and IBTL ETFs invest in?

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

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

Which ETF is more diversified: ZROZ or IBTL?

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

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