IEO vs IVV: Holdings Overlap
IEOiShares U.S. Oil & Gas Exploration & Production ETF
iShares · 46 holdings · $559M · as of 2026-03-31
iShares · 503 holdings · $901.0B · as of 2026-03-31
How similar are IEO and IVV?
iShares U.S. Oil & Gas Exploration & Production ETF (IEO, by iShares) holds 46 positions; iShares Core S&P 500 ETF (IVV, by iShares) holds 503. They have 12 holdings in common, and by portfolio weight the two funds are 1.2% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 1.2%Sum of the smaller weight of each shared holding
- Shared Holdings
- 12IEO holds 46 · IVV holds 503
- Weight in Shared Holdings
- IEO 77%·IVV 1%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
34 of 46 positions (23.4% of the fund) are not held by IVV. Showing the top 30 by weight.
Sector Breakdown
| Sector | IEO | IVV |
|---|---|---|
| Energy | 99.9% | 4.0% |
| Information Technology | 0.0% | 32.6% |
| Financials | 0.0% | 12.6% |
| Communication Services | 0.0% | 10.5% |
| Consumer Discretionary | 0.0% | 9.8% |
| Other Sectors | 0.0% | 30.3% |
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% |
| IVV | +3.4% | +14.0% | +23.7% | +21.3% | +13.4% | +15.4% | 1.05% |
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 IVV →
Shared Holdings(12)
The top 10 shared positions account for 94% of the overlap, led by COP, EOG and VLO.
 COPConocoPhillips COM | 19.46% | 0.29% | 0.29% |
|---|---|---|---|
 EOGEOG Resources Inc. COM | 9.44% | 0.14% | 0.14% |
 VLOValero Energy Corp. COM | 9.07% | 0.13% | 0.13% |
 PSXPhillips 66 COM | 7.29% | 0.13% | 0.13% |
 MPCMarathon Petroleum Corp. COM | 4.43% | 0.13% | 0.13% |
 EQTEQT Corporation COM | 4.11% | 0.07% | 0.07% |
 FANGDiamondback Energy Inc COM | 4.81% | 0.07% | 0.07% |
 DVNDevon Energy Corporation COM | 4.47% | 0.06% | 0.06% |
 TPLTexas Pacific Land Corporation COM | 3.72% | 0.05% | 0.05% |
 CTRACoterra Energy Inc COM | 3.82% | 0.05% | 0.05% |
 EXEExpand Energy Corp. COM | 3.75% | 0.05% | 0.05% |
 APAAPA Corp. COM | 2.16% | 0.03% | 0.03% |
Frequently Asked Questions
How much do IEO and IVV overlap?
IEO and IVV overlap by 1.2% of portfolio weight. They share 12 holdings (IEO holds 46 positions and IVV holds 503), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IEO and IVV?
The two portfolios are 1.2% 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 IVV?
The largest positions held by both funds are COP, EOG, VLO, PSX and MPC. Together the top 10 shared positions account for 94% of the total overlap.
What does IEO own that IVV doesn't?
34 positions (23.4% of IEO) are unique to IEO, led by OVV, PR and AR. In the other direction, 491 positions (98.6% of IVV) are unique to IVV.