OEF vs VOO: holdings overlap, shared companies and scores

As of September 11, 2026, OEF and VOO overlap 72.3% by weight. iShares S&P 100 ETF (OEF): Top 100 U.S. stocks. Vanguard S&P 500 ETF (VOO): S&P 500 index.

Updated September 11, 2026

How much do OEF and VOO overlap?

As of September 11, 2026, OEF and VOO overlap 72.3% by weight.

100% of OEF is already inside VOO.

72% of VOO is already inside OEF.

OEF holds 104 companies and VOO holds 504; 101 are in both.

Computed by ETF Copilot from both funds' holdings rather than quoted from a data provider, and rebuilt nightly.

How does ETF Copilot score OEF and VOO?

As of September 11, 2026, ETF Copilot scores OEF 5.4 out of 10 and VOO 5.6 out of 10.

They differ most on Risk: OEF 4.8 and VOO 7.5.

The five factor scores behind them are set out below, 0–10 and higher is better, ranked against every US equity ETF we track.

OEF vs VOO — ETF Copilot factor scores, 0–10
Factor	OEF	VOO
Growth	1.8	2.5
Valuation	2.6	2.2
Risk	4.8	7.5
Quality	9.6	8.7
Return	8.3	7.8

VOO is the cheaper of the two at 0.03% a year

As of September 11, 2026, OEF charges 0.20% a year, yields 0.95% and holds $20.5B in assets across 104 positions.

As of September 11, 2026, VOO charges 0.03% a year, yields 1.12% and holds $1.7T in assets across 504 positions.

OEF vs VOO — cost, income and size
Measure	OEF	VOO
Expense ratio	0.20%	0.03%
Dividend yield	0.95%	1.12%
Assets under management	$20.5B	$1.7T
Holdings	104	504

Expense ratio, dividend yield and assets under management are reported by the fund and refreshed daily. Every other figure on this page is computed by ETF Copilot.

Where OEF and VOO trade against their own history

OEF trades at 26.1 times earnings, against its own median of 22.1, and is more expensive than 86% of its own 114 monthly readings since 2017.

VOO trades at 25.2 times earnings, against its own median of 21.5, and is more expensive than 84% of its own 114 monthly readings since 2017.

What moved OEF and VOO this week

OEF fell 1.0% in the week to September 11, 2026. The holdings that moved it most were Nvidia (−4.4%), Microsoft (−2.8%) and Eli Lilly (−3.8%); Advanced Micro Devices (+13.1%) pushed the other way.

VOO fell 1.1% in the week to September 11, 2026. The holdings that moved it most were Nvidia (−4.4%), Microsoft (−2.8%) and Eli Lilly (−3.8%); Advanced Micro Devices (+13.1%) pushed the other way.

What do OEF and VOO each hold?

What's inside OEF: Tech 55%, Magnificent 7 47%.

52% of OEF is its ten largest holdings.

What's inside VOO: Tech 45%, Magnificent 7 33%.

38% of VOO is its ten largest holdings.

Compare with similar funds

Cite this

ETF Copilot, “OEF vs VOO holdings overlap and scores”, as of September 11, 2026.
https://etf-copilot.com/compare/oef-vs-voo