IEO vs IWN: Holdings Overlap
IEOiShares U.S. Oil & Gas Exploration & Production ETF
iShares · 46 holdings · $559M · as of 2026-03-31
IWNiShares Russell 2000 Value ETF
iShares · 1406 holdings · $14.7B · as of 2026-03-31
How similar are IEO and IWN?
iShares U.S. Oil & Gas Exploration & Production ETF (IEO, by iShares) holds 46 positions; iShares Russell 2000 Value ETF (IWN, by iShares) holds 1406. They have 21 holdings in common, and by portfolio weight the two funds are 3.6% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 3.6%Sum of the smaller weight of each shared holding
- Shared Holdings
- 21IEO holds 46 · IWN holds 1406
- Weight in Shared Holdings
- IEO 8%·IWN 4%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in IEO
25 of 46 positions (91.7% of the fund) are not held by IWN.
Sector Breakdown
| Sector | IEO | IWN |
|---|---|---|
| Energy | 99.9% | 8.5% |
| Financials | 0.0% | 22.4% |
| Industrials | 0.0% | 11.9% |
| Health Care | 0.0% | 10.0% |
| Consumer Discretionary | 0.0% | 8.7% |
| Other Sectors | 0.0% | 31.1% |
| Unclassified | 0.0% | 7.1% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts. “Unclassified” is weight we could not classify (0% of IEO, 7% of IWN).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IEO | +6.1% | +34.9% | +40.9% | +10.4% | +22.1% | +10.3% | 1.95% |
| IWN | +2.4% | +25.3% | +42.6% | +16.8% | +9.0% | +10.2% | 1.41% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in IEO vs IWN →
Shared Holdings(21)
The top 10 shared positions account for 81% of the overlap, led by SM, MUR and CNX.
 SMSM Energy Co. COM | 1.01% | 0.54% | 0.54% |
|---|---|---|---|
 MURMurphy Oil Corporation COM | 0.79% | 0.39% | 0.39% |
 CNXCNX Resources Corporation COM | 0.79% | 0.37% | 0.37% |
 CRCCalifornia Resources Corporation COM STOCK | 0.78% | 0.35% | 0.35% |
 MGYMagnolia Oil & Gas Corporation CL A | 0.82% | 0.31% | 0.31% |
 PBFPBF Energy, Inc., Class A | 0.57% | 0.28% | 0.28% |
 CRGYCrescent Energy, Inc., Class A | 0.47% | 0.24% | 0.24% |
 NOGNorthern Oil And Gas, Inc. COM | 0.44% | 0.19% | 0.19% |
 PARRPar Pacific Holdings, Inc. COM NEW | 0.45% | 0.15% | 0.15% |
 CLMTCalumet Inc COM | 0.33% | 0.15% | 0.15% |
 TALOTalos Energy Inc COM | 0.28% | 0.14% | 0.14% |
 KOSKosmos Energy Ltd COM | 0.23% | 0.09% | 0.09% |
 GPREGreen Plains Inc. COM | 0.16% | 0.08% | 0.08% |
 WKCWorld Kinect Corporation COM | 0.18% | 0.08% | 0.08% |
 REXRex American Resources Corp COM | 0.19% | 0.07% | 0.07% |
 BKVBKV Corporation COM | 0.15% | 0.05% | 0.05% |
 EGYVaalco Energy Inc COM NEW | 0.09% | 0.04% | 0.04% |
 VTSVitesse Energy Inc. COMMON STOCK | 0.07% | 0.04% | 0.04% |
 SDSandridge Energy, Inc. COM NEW | 0.07% | 0.04% | 0.04% |
 CRKComstock Resources, Inc. COM | 0.24% | 0.03% | 0.03% |
 CLNEClean Energy Fuels Corp. COM | 0.06% | 0.03% | 0.03% |
Frequently Asked Questions
How much do IEO and IWN overlap?
IEO and IWN overlap by 3.6% of portfolio weight. They share 21 holdings (IEO holds 46 positions and IWN holds 1406), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IEO and IWN?
The two portfolios are 3.6% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of IEO and IWN?
The largest positions held by both funds are SM, MUR, CNX, CRC and MGY. Together the top 10 shared positions account for 81% of the total overlap.
What does IEO own that IWN doesn't?
25 positions (91.7% of IEO) are unique to IEO, led by COP, EOG and VLO. In the other direction, 1385 positions (96.0% of IWN) are unique to IWN.