OEF vs SPY: holdings overlap, shared companies and scores
As of October 28, 2026, OEF and SPY overlap 73.8% by weight. iShares S&P 100 ETF (OEF): Top 100 U.S. stocks. State Street SPDR S&P 500 ETF (SPY): S&P 500 index exposure.
Updated October 28, 2026
Where OEF and SPY trade against their own history
OEF trades at 25.6 times earnings, against its own median of 23.7, and is more expensive than 68% of its own last 9 years.
SPY trades at 24.8 times earnings, against its own median of 22.8, and is more expensive than 62% of its own last 9 years.
What do OEF and SPY each hold?
What's inside OEF: Tech 52%, Magnificent 7 46%.
52% of OEF is its ten largest holdings.
What's inside SPY: Tech 44%, Magnificent 7 34%.
38% of SPY is its ten largest holdings.
How much do OEF and SPY overlap? 73.8% by weight
As of October 28, 2026, OEF and SPY overlap 73.8% by weight.
100% of OEF is already inside SPY.
74% of SPY is already inside OEF.
OEF holds 104 companies and SPY 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 SPY? 7.3 and 7.1 out of 10
As of October 28, 2026, ETF Copilot scores OEF 7.3 out of 10 and SPY 7.1 out of 10.
They differ most on Risk: OEF 5.6 and SPY 6.9.
The five factor scores behind them are set out below, 0–10 and higher is better, ranked against every US equity ETF we track.
| Factor | OEF | SPY |
|---|---|---|
| Growth | 8.5 | 7.8 |
| Value | 3.4 | 3.5 |
| Risk | 5.6 | 6.9 |
| Quality | 9.6 | 8.7 |
| Return | 8.4 | 8.0 |
SPY is the cheaper of the two at 0.09% a year
As of October 28, 2026, OEF charges 0.20% a year, yields 0.85% and holds $20.5B in assets across 104 positions.
As of October 28, 2026, SPY charges 0.09% a year, yields 0.98% and holds $814.8B in assets across 504 positions.
| Measure | OEF | SPY |
|---|---|---|
| Expense ratio | 0.20% | 0.09% |
| Dividend yield | 0.85% | 0.98% |
| Assets under management | $20.5B | $814.8B |
| 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.
Compare with similar funds
Cite this
ETF Copilot, “OEF vs SPY holdings overlap and scores”, as of October 28, 2026.
https://etf-copilot.com/compare/oef-vs-spy
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