IEO vs IJJ: Holdings Overlap
IEOiShares U.S. Oil & Gas Exploration & Production ETF
iShares · 46 holdings · $559M · as of 2026-03-31
IJJiShares S&P Mid-Cap 400 Value ETF
iShares · 301 holdings · $9.0B · as of 2026-03-31
How similar are IEO and IJJ?
iShares U.S. Oil & Gas Exploration & Production ETF (IEO, by iShares) holds 46 positions; iShares S&P Mid-Cap 400 Value ETF (IJJ, by iShares) holds 301. They have 11 holdings in common, and by portfolio weight the two funds are 6.7% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 6.7%Sum of the smaller weight of each shared holding
- Shared Holdings
- 11IEO holds 46 · IJJ holds 301
- Weight in Shared Holdings
- IEO 15%·IJJ 7%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
35 of 46 positions (85.0% of the fund) are not held by IJJ. Showing the top 30 by weight.
Sector Breakdown
| Sector | IEO | IJJ |
|---|---|---|
| Energy | 99.9% | 7.6% |
| Financials | 0.0% | 22.4% |
| Industrials | 0.0% | 19.0% |
| Consumer Discretionary | 0.0% | 12.4% |
| Materials | 0.0% | 8.2% |
| Other Sectors | 0.0% | 29.5% |
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.
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% |
| IJJ | +3.0% | +15.1% | +23.8% | +12.8% | +9.2% | +10.5% | 1.56% |
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 IJJ →
Shared Holdings(11)
The top 10 shared positions account for 96% of the overlap, led by OVV, PR and AR.
 OVVOvintiv Inc COM | 2.36% | 1.05% | 1.05% |
|---|---|---|---|
 PRPermian Resources Corporation Class A | 2.26% | 1.01% | 1.01% |
 ARAntero Resources Corporation COM | 1.78% | 0.79% | 0.79% |
 RRCRange Resources Corporation | 1.53% | 0.68% | 0.68% |
 DINOHF Sinclair Corporation | 1.40% | 0.62% | 0.62% |
 VNOMViper Energy Inc. CL A | 1.25% | 0.56% | 0.56% |
 CHRDChord Energy Corp. COM NEW | 1.16% | 0.51% | 0.51% |
 MTDRMatador Resources Company COM | 1.06% | 0.47% | 0.47% |
 MURMurphy Oil Corporation COM | 0.79% | 0.35% | 0.35% |
 CNXCNX Resources Corporation COM | 0.79% | 0.35% | 0.35% |
 PBFPBF Energy, Inc., Class A | 0.57% | 0.25% | 0.25% |
Frequently Asked Questions
How much do IEO and IJJ overlap?
IEO and IJJ overlap by 6.7% of portfolio weight. They share 11 holdings (IEO holds 46 positions and IJJ holds 301), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IEO and IJJ?
The two portfolios are 6.7% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of IEO and IJJ?
The largest positions held by both funds are OVV, PR, AR, RRC and DINO. Together the top 10 shared positions account for 96% of the total overlap.
What does IEO own that IJJ doesn't?
35 positions (85.0% of IEO) are unique to IEO, led by COP, EOG and VLO. In the other direction, 290 positions (92.5% of IJJ) are unique to IJJ.