IEO ETF largest holding is COP at 17.66% as of Aug 5, 2026

$141.49

AUM$628M

TER0.37%

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IEO ETF largest holding is COP at 17.66% as of Aug 5, 2026

$141.49

iShares US Oil & Gas Exploration & Production ETF

AUM$628M

TER0.37%

Holdings50

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Overview Performance Chart Dividends Top Holdings All Holdings Sectors Geography Similar Compare Overlap

COP is IEO's largest holding at 17.66% of the fund as of Aug 5, 2026. IEO is iShares US Oil & Gas Exploration & Production ETF.

Showing top 50 of 50 holdings · as of Aug 5, 2026

IEO holdings, by weight
#	Ticker	Name	Weight	Cumulative	Shares	Mkt value	Share chg	Sector	Industry
1	COP	Conocophillips CoEnergy · Oil & Gas	17.66%	17.7%	828,194	$95.28M	-	Energy	Oil & Gas
2	VLO	Valero Energy Corp.Energy · Oil & Gas	11.31%	29.0%	201,855	$61.04M	-	Energy	Oil & Gas
Share changes, sector and industry · Pro
3	MPC	Marathon Petroleum Corp.	10.95%	39.9%	198,458	$59.09M
4	EOG	Eog Resources Inc	6.28%	46.2%	252,277	$33.86M
5	PSX	Phillips 66	4.94%	51.1%	131,540	$26.64M
6	EQT	Eqt Corp	4.31%	55.5%	454,349	$23.28M
7	FANG	Diamondback Energy Inc.	4.20%	59.7%	121,615	$22.64M
8	DVN	Devon Energy Corp.	4.00%	63.7%	512,946	$21.59M
9	TPL	Texas Pacific Land Trust	3.85%	67.5%	54,364	$20.76M
10	CHK	Chesapeake Energy Corp	3.78%	71.3%	224,470	$20.39M
11	OVV	Ovintiv Inc.	2.78%	74.1%	258,409	$14.98M
12	PR	Permian Resources Corp	2.71%	76.8%	738,497	$14.61M
13	—	Hollyfrontier	2.21%	79.0%	143,781	$11.93M
14	APA	Apa Corp	2.13%	81.1%	331,664	$11.50M
15	AR	Antero Resources Corp	1.76%	82.9%	276,186	$9.48M
16	RRC	Range Resources Corp	1.56%	84.4%	221,086	$8.43M
17	VNOM	Viper Energy Inccommon Stock	1.40%	85.8%	182,233	$7.55M
18	CHRD	Chord Energy Corp	1.27%	87.1%	52,825	$6.86M
19	SM	Sm Energy Co	1.15%	88.3%	213,711	$6.20M
20	—	Venture Global, Inc. Class A % 01/00/1900	1.11%	89.4%	483,937	$6.02M
21	MGY	Magnolia Oil & Gas Corp	0.95%	90.3%	215,831	$5.12M
22	MTDR	Matador Resources Co	0.95%	91.3%	109,526	$5.15M
23	PBF	Pbf Energy Inc-Class A	0.89%	92.2%	78,817	$4.82M
24	CNX	Cnx Resources Corp	0.85%	93.0%	132,750	$4.59M
25	MUR	Murphy Oil Corp	0.84%	93.8%	126,437	$4.56M
26	CRC	California Resources Corp	0.70%	94.5%	73,319	$3.76M
27	DK	Delek Us Holdings Inc	0.64%	95.2%	57,507	$3.44M
28	PARR	Par Pacific Holdings Inc	0.61%	95.8%	47,051	$3.29M
29	CRGY	Crescent Energy Inc	0.47%	96.3%	229,692	$2.52M
30	CLMT	Calumet Inc	0.45%	96.7%	60,510	$2.44M
31	GPOR	Gulfport Energy Corp	0.40%	97.1%	13,685	$2.14M
32	NOG	Northern Oil and Gas Inc	0.36%	97.5%	98,075	$1.94M
33	INT	World Fuel Services Corp	0.34%	97.8%	48,170	$1.85M
34	TALO	Talos Energy Inc	0.30%	98.1%	115,856	$1.64M
35	KOS	Kosmos Energy Ltd	0.24%	98.4%	556,356	$1.31M
36	REX	Rex American Resources Corp	0.22%	98.6%	26,563	$1.17M
37	GPRE	Green Plains, Inc.	0.20%	98.8%	65,699	$1.08M
38	CRK	Comstock Resources, Inc.	0.18%	99.0%	74,304	$963.0K
39	CVI	Cvr Energy Inc (cvi Un)	0.16%	99.1%	28,288	$882.6K
40	BKV	Bkv Corp	0.15%	99.3%	34,885	$802.4K
41	Debt	Blackrock Cash Funds: Treasury, Sl Agency Shares	0.13%	99.4%	717,271	$717.3K
42	DEC	Diversified Energy Co	0.13%	99.5%	54,257	$710.2K
43	SOC	Sable Offshore Corp.	0.11%	99.6%	123,069	$569.8K
44	EGY	Vaalco Energy Inc	0.09%	99.7%	97,788	$503.6K
45	VTS	Vitesse Energy Inc	0.08%	99.8%	28,560	$451.2K
46	SD	Sandridge Energy, Inc.	0.07%	99.9%	29,725	$392.4K
47	CLNE	Clean Energy Fuels	0.06%	99.9%	163,184	$306.8K
48	—	USD Cash	0.04%	100.0%	203,079	$203.1K
49	—	Cash Collateral USD Sgaft	0.01%	100.0%	70,000	$70.0K
50	—	Emini Energy Select Sector Sep 26	0.00%	100.0%	8	-

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IEO ETF All Holdings

IEO holdings total 50 positions. The top 10 holdings account for 71.3% of the fund, led by Conocophillips Co at 17.7%, Valero Energy Corp. at 11.3%, Marathon Petroleum Corp. at 10.9%.

IEO portfolio concentration is relatively high, with the top 10 representing 71.3% of total assets. The largest sector exposure is Energy at 91.9%.

IEO sectors provide a detailed breakdown. IEO overlap shows how holdings compare to other funds in your portfolio.

Compare IEO

IEO vs SPY IEO vs QQQ IEO vs VOO IEO vs VTI IEO vs IVV IEO vs SCHD IEO vs VYM IEO vs VXUS

IEO ETF Holdings

50 of 50 holdings

Sector

Industry

Sort By

1
Conocophillips Co
COPEnergy
17.66%
2
Valero Energy Corp.
VLOEnergy
11.31%
3
Marathon Petroleum Corp.
MPCEnergy
10.95%
4
Eog Resources Inc
EOGEnergy
6.28%
5
Phillips 66
PSXEnergy
4.94%
6
Eqt Corp
EQTEnergy
4.31%
7
Diamondback Energy Inc.
FANGEnergy
4.20%
8
Devon Energy Corp.
DVNEnergy
4.00%
9
Texas Pacific Land Trust
TPLReal Estate
3.85%
10
Chesapeake Energy Corp
CHKEnergy
3.78%
11
Ovintiv Inc.
OVVEnergy
2.78%
12
Permian Resources Corp
PRUnknown
2.71%
13
Hollyfrontier
DINOEnergy
2.21%
14
Apa Corp
APAEnergy
2.13%
15
Antero Resources Corp
AREnergy
1.76%
16
Range Resources Corp
RRCEnergy
1.56%
17
Viper Energy Inccommon Stock
VNOMEnergy
1.40%
18
Chord Energy Corp
OASEnergy
1.27%
19
Sm Energy Co
SMEnergy
1.15%
20
Venture Global, Inc. Class A % 01/00/1900
VGEnergy
1.11%
21
Magnolia Oil & Gas Corp
MGYEnergy
0.95%
22
Matador Resources Co
MTDREnergy
0.95%
23
Pbf Energy Inc-class A
PBFEnergy
0.89%
24
Cnx Resources Corp
CNXEnergy
0.85%
25
Murphy Oil Corp
MUREnergy
0.84%
26
California Resources Corp Common Stock
CRCEnergy
0.70%
27
Delek Us Holdings Inc
DKEnergy
0.64%
28
Par Pacific Holdings Inc
PARREnergy
0.61%
29
Crescent Energy Inc Common Stock Usd 0.0001
CRGYEnergy
0.47%
30
Calumet Inc
CLMTUnknown
0.45%
31
Gulfport Energy Corp
GPOREnergy
0.40%
32
Northern Oil And Gas Inc Common Stock Usd 0.001
NOGEnergy
0.36%
33
World Fuel Services Corp
INTInformation Technology
0.34%
34
Talos Energy Inc
TALOEnergy
0.30%
35
Kosmos Energy Ltd
KOSUnknown
0.24%
36
Rex American Resources Corp
REXEnergy
0.22%
37
Green Plains, Inc.
GPREEnergy
0.20%
38
Comstock Resources, Inc. Com
CRKEnergy
0.18%
39
Cvr Energy Inc (cvi Un)
CVIEnergy
0.16%
40
Bkv Corp
BKVFinancials
0.15%
41
Blackrock Cash Funds: Treasury, Sl Agency Shares
XTSLAFinancials
0.13%
42
Diversified Energy Co
DECUnknown
0.13%
43
Sable Offshore Corp. (A)
SOCEnergy
0.11%
44
Vaalco Energy Inc
EGYEnergy
0.09%
45
Vitesse Energy Inc
VTSEnergy
0.08%
46
Sandridge Energy, Inc.
SDEnergy
0.07%
47
Clean Energy Fuels
CLNEEnergy
0.06%
48
USD Cash
Other
0.04%
49
Cash Collateral USD Sgaft
Other
0.01%
50
Emini Energy Select Sector Sep 26
Other
0.00%

#	Company	Ticker	Weight
1	Conocophillips Co	COP	17.660%
2	Valero Energy Corp.	VLO	11.310%
3	Marathon Petroleum Corp.	MPC	10.950%
4	Eog Resources Inc	EOG	6.280%
5	Phillips 66	PSX	4.940%
6	Eqt Corp	EQT	4.310%
7	Diamondback Energy Inc.	FANG	4.200%
8	Devon Energy Corp.	DVN	4.000%
9	Texas Pacific Land Trust	TPL	3.850%
10	Chesapeake Energy Corp	CHK	3.780%
11	Ovintiv Inc.	OVV	2.780%
12	Permian Resources Corp	PR	2.710%
13	Hollyfrontier	DINO	2.210%
14	Apa Corp	APA	2.130%
15	Antero Resources Corp	AR	1.760%
16	Range Resources Corp	RRC	1.560%
17	Viper Energy Inccommon Stock	VNOM	1.400%
18	Chord Energy Corp	OAS	1.270%
19	Sm Energy Co	SM	1.150%
20	Venture Global, Inc. Class A % 01/00/1900	VG	1.110%
21	Magnolia Oil & Gas Corp	MGY	0.950%
22	Matador Resources Co	MTDR	0.950%
23	Pbf Energy Inc-class A	PBF	0.890%
24	Cnx Resources Corp	CNX	0.850%
25	Murphy Oil Corp	MUR	0.840%
26	California Resources Corp Common Stock	CRC	0.700%
27	Delek Us Holdings Inc	DK	0.640%
28	Par Pacific Holdings Inc	PARR	0.610%
29	Crescent Energy Inc Common Stock Usd 0.0001	CRGY	0.470%
30	Calumet Inc	CLMT	0.450%
31	Gulfport Energy Corp	GPOR	0.400%
32	Northern Oil And Gas Inc Common Stock Usd 0.001	NOG	0.360%
33	World Fuel Services Corp	INT	0.340%
34	Talos Energy Inc	TALO	0.300%
35	Kosmos Energy Ltd	KOS	0.240%
36	Rex American Resources Corp	REX	0.220%
37	Green Plains, Inc.	GPRE	0.200%
38	Comstock Resources, Inc. Com	CRK	0.180%
39	Cvr Energy Inc (cvi Un)	CVI	0.160%
40	Bkv Corp	BKV	0.150%
41	Blackrock Cash Funds: Treasury, Sl Agency Shares	XTSLA	0.130%
42	Diversified Energy Co	DEC	0.130%
43	Sable Offshore Corp. (A)	SOC	0.110%
44	Vaalco Energy Inc	EGY	0.090%
45	Vitesse Energy Inc	VTS	0.080%
46	Sandridge Energy, Inc.	SD	0.070%
47	Clean Energy Fuels	CLNE	0.060%
48	USD Cash	-	0.040%
49	Cash Collateral USD Sgaft	-	0.010%
50	Emini Energy Select Sector Sep 26	-	0.000%