ZROZvsIEFETF Comparison

ETF 1

ZROZ

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

This fund is part of

US Government Bonds

-0.02%

Full ZROZ fund page

ETF 2

IEF

iShares 7-10 Year Treasury Bond ETF

This fund is part of

US Government Bonds

-0.02%

Full IEF fund page

PIMCO 25+ Year Zero Coupon U.S. Treasury Index ETF (ZROZ) and iShares 7-10 Year Treasury Bond ETF (IEF) belong to the same industry segment: US Government Bonds. ZROZ's top 1 sector exposures are Sovereign. In contrast, IEF's top sector exposures are Sovereign and Non-Corporate. Both ZROZ and IEF have the same Total Expense Ratio (TER) of 0.15%. ZROZ is down -6.14% year-to-date (YTD) with +$371M in YTD flows. IEF performs better with -2.37% YTD performance, and +$567M in YTD flows. Run a side-by-side ETF comparison of ZROZ and IEF 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 IEF performance and flow charts

Performance

Cumulative Flows

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Data Services

Historic performance and flows

Data as of 10/27/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	ZROZ IEF	+6.55%+2.11%	-2.84%-1.30%	-6.14%-2.37%	-13.57%-2.80%	+0.36%+13.11%	-53.60%-7.54%
Flows	ZROZ IEF	+$24M+$1.45B	+$507M-$2.66B	+$371M+$567M	+$315M+$6.24B	+$1.08B+$17.09B	+$2.15B+$35.47B

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	ZROZ IEF	+19.75%+5.62%	+16.11%+4.91%	+20.73%+6.13%	+23.76%+7.66%
Max drawdown	ZROZ IEF	-13.46%-4.27%	-22.75%-6.81%	-33.12%-6.88%	-61.27%-20.43%
Max drawdown duration	ZROZ IEF	91d63d	364d240d	771d319d	1787d1787d

Trading data

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	ZROZ	IEF
Last sale 10/27/2026 at 1:30 PM	$58.77	$91.10
Previous close 10/27/2026	$58.87	$91.12
Consolidated volume 10/27/2026
Average volume 30 days
Average discount or premium 30 days
Average Bid/Ask spread 30 days

Replication quality

Data as of October 28, 2026

1-year trailing difference

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

Main metrics

Last update 10/27/2026 at 1:30 PM

Live

Closed

	ZROZ	IEF
Last price	$58.77	$91.10
1D performance	-0.17%	-0.02%
AuM	$1.84 B	$43.54 B
E/R	0.15%	0.15%

Characteristics

	ZROZ	IEF
Management strategy	Passive	Passive
Provider	PIMCO	iShares
Benchmark	ICE BofA Long US Treasury Principal STRIPS Index	ICE US Treasury 7-10 Year Bond Index
N° of holdings	21	17
Asset class	Bonds	Bonds
Trailing 12m distribution yield	Join	Join
Inception date	October 30, 2009	July 22, 2002
ESG	No	No

More ZROZ data on Trackinsight

More IEF data on Trackinsight

Exposure

Countries

ZROZ

USA

95.56%

Other

4.44%

IEF

USA

96.87%

Other

3.13%

Sectors

ZROZ

Sovereign

95.56%

Other

4.44%

IEF

Sovereign

95.76%

Other

4.24%

Diversification

ZROZ

Total weight of top 15 holdings out of 15

78.28%

IEF

Total weight of top 15 holdings out of 15

100.18%

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%

IEF

USA, Notes 4.125% 15feb2036, USD (B-2036)

9.32%

USA, Notes 4.375% 15may2036, USD (C-2036)

8.83%

USA, Notes 4.625% 15feb2035, USD (B-2035)

8.76%

USA, Notes 4.25% 15nov2034, USD (F-2034)

8.74%

USA, Notes 4% 15nov2035, USD (F-2035)

8.63%

USA, Notes 4.375% 15may2034, USD (C-2034)

8.42%

USA, Notes 4.25% 15may2035, USD (C-2035)

8.32%

USA, Notes 4.25% 15aug2035, USD (E-2035)

8.27%

USA, Notes 4% 15feb2034, USD (B-2034)

8.13%

USA, Notes 4.5% 15nov2033, USD (F-2033)

7.02%

USA, Notes 3.875% 15aug2034, USD (E-2034)

6.74%

US91282CRF04

3.83%

USA, Notes 3.875% 15aug2033, USD (E-2033)

3.30%

BlackRock Cash Funds - Treasury

1.11%

USA, Bonds 4.5% 15feb2036, USD

0.77%

Frequently asked questions about ZROZ and IEF

How have the ZROZ and IEF ETFs performed in 2026?

As of October 27, 2026, ZROZ is down -6.14% year-to-date (YTD), while IEF has lost -2.37%. That puts IEF better performer ahead so far this year.

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

Year-to-date, the ZROZ ETF saw +$371M in flows, compared to +$567M for IEF.

Which ETF is more volatile: ZROZ or IEF?

Over the past year, ZROZ had a volatility of 16.11%, while IEF experienced 4.91%.

Which ETF is bigger: ZROZ or IEF?

As of October 27, 2026, ZROZ holds $1.84 B in assets under management (AUM), while IEF manages $43.54 B.

What sectors do the ZROZ and IEF ETFs invest in?

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

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

ZROZ top holdings include USA, STRIPS 0% 15feb2052, USD (10957D), USA, STRIPS 0% 15may2052, USD (10958D) and USA, STRIPS 0% 15nov2051, USD (10957D). IEF holds in its top three: USA, Notes 4.125% 15feb2036, USD (B-2036), USA, Notes 4.375% 15may2036, USD (C-2036) and USA, Notes 4.625% 15feb2035, USD (B-2035).

ZROZvsIEFETF Comparison

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

iShares 7-10 Year Treasury Bond ETF

ZROZ vs IEF 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 IEF ETFs performed in 2026?

As of October 27, 2026, ZROZ is down -6.14% year-to-date (YTD), while IEF has lost -2.37%. That puts IEF better performer ahead so far this year.

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

Year-to-date, the ZROZ ETF saw +$371M in flows, compared to +$567M for IEF.

Which ETF is more volatile: ZROZ or IEF?

Over the past year, ZROZ had a volatility of 16.11%, while IEF experienced 4.91%.

Which ETF is bigger: ZROZ or IEF?

As of October 27, 2026, ZROZ holds $1.84 B in assets under management (AUM), while IEF manages $43.54 B.

What sectors do the ZROZ and IEF ETFs invest in?

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

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

Which ETF is more diversified: ZROZ or IEF?

ZROZ holds 21 securities with 78.28% of its assets in the top 15. IEF has 17 securities and a top 15 weight of 100.18%.

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