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IEOvsWEEIETF Comparison

ETF 1

IEO

iShares U.S. Oil & Gas Exploration & Production ETF

This fund is part of

US Energy

-0.54%

Full IEO fund page

VS

ETF 2

WEEI

Westwood Salient Enhanced Energy Income ETF

This fund is part of

Options Strategies

-0.36%

Full WEEI fund page

iShares U.S. Oil & Gas Exploration & Production ETF (IEO) belongs to the US Energy segment. Westwood Salient Enhanced Energy Income ETF (WEEI) is part of the Options Strategies segment. Both ETFs have the same top 3 sector exposures: and Energy. IEO is less expensive with a Total Expense Ratio (TER) of 0.38%, versus 0.85% for WEEI. IEO is up 24.54% year-to-date (YTD) with +$10M in YTD flows. WEEI performs worse with 13.51% YTD performance, and +$47M in YTD flows. Run a side-by-side ETF comparison of IEO and WEEI 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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IEO vs WEEI performance and flow charts

Performance

Cumulative Flows

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Daily, global ETF data for advanced analysis or integration into apps (API), from our partner Trackinsight.

Data Services

Historic performance and flows

Data as of 06/16/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	IEO WEEI	-9.32%-6.19%	-5.32%-1.25%	+24.54%+13.51%	+21.94%+22.48%	+40.86%n/a	+120.60%n/a
Flows	IEO WEEI	-$6M+$4M	-$16M+$34M	+$10M+$47M	-$61M+$63M	-$222M-	-$75M-

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	IEO WEEI	+31.19%+19.34%	+25.60%+14.81%	+25.72%n/a	+30.67%n/a
Max drawdown	IEO WEEI	-14.30%-7.68%	-14.30%-7.68%	-31.40%n/a	-31.40%n/a
Max drawdown duration	IEO WEEI	79d47d	79d47d	683dn/a	683dn/a

Trading data

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	IEO	WEEI
Last sale 6/17/2026 at 1:30 PM	$109.27	$22.71
Previous close 06/16/2026	$110.19	$22.95
Consolidated volume 06/16/2026
Average volume 30 days
Average discount or premium 30 days
Average Bid/Ask spread 30 days

Replication quality

Data as of May 29, 2026

1-year trailing difference

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WEEI

is actively managed and doesn’t replicate an index

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	IEO	WEEI
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 6/17/2026 at 1:30 PM

Live

Closed

	IEO	WEEI
Last price	$109.27	$22.71
1D performance	-0.83%	-1.03%
AuM	$517.79 M	$82.08 M
E/R	0.38%	0.85%

Characteristics

	IEO	WEEI
Management strategy	Passive	Active
Provider	iShares	Westwood
Benchmark	Dow Jones U.S. Select Oil Exploration & Production Index	-
N° of holdings	40	22
Asset class	Equities	-
Trailing 12m distribution yield	Join	Join
Inception date	May 1, 2006	May 1, 2024
ESG	No	No

More IEO data on Trackinsight

More WEEI data on Trackinsight

Exposure

Countries

IEO

USA

99.92%

Other

0.08%

WEEI

USA

93.01%

Other

6.99%

Sectors

IEO

Energy

94.44%

Other

5.56%

WEEI

Energy

98.09%

Other

1.91%

Diversification

IEO

Total weight of top 15 holdings out of 15

82.77%

WEEI

Total weight of top 15 holdings out of 15

87.46%

Top 15 holdings

Data as of April 30, 2026

IEO

CONOCOPHILLIPS

18.85%

VALERO ENERGY

9.42%

EOG RESOURCES

9.33%

PHILLIPS 66

7.29%

DIAMONDBACK ENERGY

5.08%

DEVON ENERGY

4.64%

MARATHON PETROLEUM

4.58%

COTERRA ENERGY

3.97%

EQT

3.94%

CHESAPEAKE ENERGY

3.54%

TEXAS PACIFIC LAND CORP

3.54%

OVINTIV INC

2.49%

US71424F1057

2.33%

APA CORPORATION

2.10%

ANTERO RESOURCES

1.68%

WEEI

EXXON

23.07%

CHEVRON TEXACO

13.41%

CONOCOPHILLIPS

6.24%

VALERO ENERGY

5.11%

SCHLUMBERGER

5.08%

WILLIAMS

4.85%

BAKER HUGHES

4.12%

EOG RESOURCES

3.74%

PHILLIPS 66

3.73%

KINDER MORGAN

3.67%

TARGA RESOURCS

3.38%

ONEOK

3.36%

MARATHON PETROLEUM

3.07%

HALLIBURTON

2.44%

EQT

2.19%

Frequently asked questions about IEO and WEEI

IEOvsWEEIETF Comparison

iShares U.S. Oil & Gas Exploration & Production ETF

Westwood Salient Enhanced Energy Income ETF

IEO vs WEEI performance and flow charts

Performance

Cumulative Flows

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Countries

Sectors

Diversification

Top 15 holdings

How have the IEO and WEEI ETFs performed in 2026?

As of June 16, 2026, IEO is up 24.54% year-to-date (YTD), while WEEI has returned 13.51%. That puts IEO better performer ahead so far this year.

Which ETF is attracting more investor money: IEO or WEEI?

Year-to-date, the IEO ETF saw +$10M in flows, compared to +$47M for WEEI.

Which ETF is more volatile: IEO or WEEI?

Over the past year, IEO had a volatility of 25.6%, while WEEI experienced 14.81%.

Which ETF is bigger: IEO or WEEI?

As of June 16, 2026, IEO holds $517.79 M in assets under management (AUM), while WEEI manages $82.08 M.

What sectors do the IEO and WEEI ETFs invest in?

IEO leans toward sectors like Energy. Meanwhile, WEEI focuses on Energy.

What are the top holdings of the IEO ETF and WEEI ETF?

IEO top holdings include CONOCOPHILLIPS, VALERO ENERGY and EOG RESOURCES. WEEI holds in its top three: EXXON, CHEVRON TEXACO and CONOCOPHILLIPS.

Which ETF is more diversified: IEO or WEEI?

IEO holds 47 securities with 82.77% of its assets in the top 15. WEEI has 22 securities and a top 15 weight of 87.46%.

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