IEFvsZROZETF Comparison

ETF 1

IEF

iShares 7-10 Year Treasury Bond ETF

This fund is part of

US Government Bonds

-0.23%

Full IEF fund page

ETF 2

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

iShares 7-10 Year Treasury Bond ETF (IEF) and PIMCO 25+ Year Zero Coupon U.S. Treasury Index ETF (ZROZ) belong to the same industry segment: US Government Bonds. IEF's top 2 sector exposures are Sovereign and Non-Corporate. In contrast, ZROZ's top sector exposures are Sovereign. Both IEF and ZROZ have the same Total Expense Ratio (TER) of 0.15%. IEF is down -2.64% year-to-date (YTD) with -$24M in YTD flows. ZROZ performs worse with -7.56% YTD performance, and +$363M in YTD flows. Run a side-by-side ETF comparison of IEF 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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IEF vs ZROZ 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.	IEF ZROZ	+1.82%+4.94%	-1.88%-5.05%	-2.64%-7.56%	-3.17%-15.24%	+13.16%-0.69%	-7.55%-54.20%
Flows	IEF ZROZ	+$855M+$15M	-$3.31B+$517M	-$24M+$363M	+$5.58B+$306M	+$16.47B+$1.05B	+$34.88B+$2.14B

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	IEF ZROZ	+5.61%+19.90%	+4.91%+16.17%	+6.13%+20.74%	+7.66%+23.77%
Max drawdown	IEF ZROZ	-4.27%-13.46%	-6.81%-22.75%	-6.88%-33.12%	-20.43%-61.27%
Max drawdown duration	IEF ZROZ	64d92d	241d365d	319d772d	1788d1788d

Trading data

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	IEF	ZROZ
Last sale 10/28/2026 at 1:30 PM	$90.85	$57.82
Previous close 10/28/2026	$91.10	$58.77
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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	IEF	ZROZ
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 10/28/2026 at 1:30 PM

Live

Closed

	IEF	ZROZ
Last price	$90.85	$57.82
1D performance	-0.27%	-1.62%
AuM	$42.82 B	$1.80 B
E/R	0.15%	0.15%

Characteristics

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

More IEF data on Trackinsight

More ZROZ data on Trackinsight

Exposure

Countries

IEF

USA

96.87%

Other

3.13%

ZROZ

USA

95.56%

Other

4.44%

Sectors

IEF

Sovereign

95.76%

Other

4.24%

ZROZ

Sovereign

95.56%

Other

4.44%

Diversification

IEF

Total weight of top 15 holdings out of 15

100.18%

ZROZ

Total weight of top 15 holdings out of 15

78.28%

Top 15 holdings

Data as of August 31, 2026

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%

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 IEF and ZROZ

How have the IEF and ZROZ ETFs performed in 2026?

As of October 28, 2026, IEF is down -2.64% year-to-date (YTD), while ZROZ has lost -7.56%. That puts IEF better performer ahead so far this year.

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

Year-to-date, the IEF ETF saw -$24M in flows, compared to +$363M for ZROZ.

Which ETF is more volatile: IEF or ZROZ?

Over the past year, IEF had a volatility of 4.91%, while ZROZ experienced 16.17%.

Which ETF is bigger: IEF or ZROZ?

As of October 28, 2026, IEF holds $42.82 B in assets under management (AUM), while ZROZ manages $1.80 B.

What sectors do the IEF and ZROZ ETFs invest in?

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

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

IEF top holdings include 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). 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).

IEFvsZROZETF Comparison

iShares 7-10 Year Treasury Bond ETF

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

IEF 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 IEF and ZROZ ETFs performed in 2026?

As of October 28, 2026, IEF is down -2.64% year-to-date (YTD), while ZROZ has lost -7.56%. That puts IEF better performer ahead so far this year.

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

Year-to-date, the IEF ETF saw -$24M in flows, compared to +$363M for ZROZ.

Which ETF is more volatile: IEF or ZROZ?

Over the past year, IEF had a volatility of 4.91%, while ZROZ experienced 16.17%.

Which ETF is bigger: IEF or ZROZ?

As of October 28, 2026, IEF holds $42.82 B in assets under management (AUM), while ZROZ manages $1.80 B.

What sectors do the IEF and ZROZ ETFs invest in?

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

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

Which ETF is more diversified: IEF or ZROZ?

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

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