OIH vs VIOV: Holdings Overlap
VanEck · 25 holdings · $1.9B · as of 2026-03-31
VIOVVanguard S&P Small-cap 600 Value Index Fund
Vanguard · 460 holdings · $1.9B · as of 2026-05-31
Holdings snapshots are 61 days apart (OIH: 2026-03-31, VIOV: 2026-05-31). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are OIH and VIOV?
VanEck Oil Services ETF (OIH, by VanEck) holds 25 positions; Vanguard S&P Small-cap 600 Value Index Fund (VIOV, by Vanguard) holds 460. They have 10 holdings in common, and by portfolio weight the two funds are 2.3% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 2.3%Sum of the smaller weight of each shared holding
- Shared Holdings
- 10OIH holds 25 · VIOV holds 460
- Weight in Shared Holdings
- OIH 22%·VIOV 2%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 OIH
15 of 25 positions (77.5% of the fund) are not held by VIOV.
Sector Breakdown
| Sector | OIH | VIOV |
|---|---|---|
| Energy | 99.9% | 7.3% |
| Financials | 0.0% | 21.0% |
| Consumer Discretionary | 0.0% | 14.9% |
| Information Technology | 0.0% | 13.3% |
| Industrials | 0.0% | 12.6% |
| Other Sectors | 0.0% | 30.4% |
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 |
|---|---|---|---|---|---|---|---|
| OIH | +6.0% | +36.4% | +67.5% | +6.4% | +17.5% | -2.1% | 1.25% |
| VIOV | +3.7% | +23.2% | +39.7% | +13.8% | +8.4% | +10.4% | 1.64% |
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 OIH vs VIOV →
Shared Holdings(10)
The top 10 shared positions account for 100% of the overlap, led by LBRT, PTEN and NE.
 LBRTLiberty Energy, Inc., Class A | 3.54% | 0.55% | 0.55% |
|---|---|---|---|
 PTENPatterson-UTI Energy Inc. COM | 3.32% | 0.45% | 0.45% |
 NENoble Corporation PLC ORD SHS A | 4.64% | 0.32% | 0.32% |
 HPHelmerich & Payne Inc COM | 2.64% | 0.23% | 0.23% |
 OIIOceaneering International, Inc. COM | 2.72% | 0.18% | 0.18% |
 WHDCactus, Inc., Class A | 2.40% | 0.17% | 0.17% |
 HLXHelix Energy Solutions Group, Inc. COM | 1.14% | 0.15% | 0.15% |
 CLBCore Laboratories Inc COM | 0.26% | 0.07% | 0.07% |
 INVXInnovex International Inc. COM | 0.85% | 0.07% | 0.07% |
 RESRPC Inc COM | 0.87% | 0.07% | 0.07% |
Frequently Asked Questions
How much do OIH and VIOV overlap?
OIH and VIOV overlap by 2.3% of portfolio weight. They share 10 holdings (OIH holds 25 positions and VIOV holds 460), based on each fund's latest SEC-reported holdings.
Is it redundant to own both OIH and VIOV?
The two portfolios are 2.3% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of OIH and VIOV?
The largest positions held by both funds are LBRT, PTEN, NE, HP and OII. Together the top 10 shared positions account for 100% of the total overlap.
What does OIH own that VIOV doesn't?
15 positions (77.5% of OIH) are unique to OIH, led by SLB, BKR and HAL. In the other direction, 450 positions (97.3% of VIOV) are unique to VIOV.