IWB vs OEF: holdings overlap, shared companies and scores
As of October 28, 2026, IWB and OEF overlap 68.6% by weight. iShares Russell 1000 ETF (IWB): Russell 1000 index. iShares S&P 100 ETF (OEF): Top 100 U.S. stocks.
Updated October 28, 2026
Where IWB and OEF trade against their own history
IWB trades at 24.5 times earnings, against its own median of 22.4, and is more expensive than 63% of its own last 9 years.
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.
What do IWB and OEF each hold?
What's inside IWB: Tech 42%, Magnificent 7 32%.
35% of IWB is its ten largest holdings.
What's inside OEF: Tech 52%, Magnificent 7 46%.
52% of OEF is its ten largest holdings.
How much do IWB and OEF overlap? 68.6% by weight
As of October 28, 2026, IWB and OEF overlap 68.6% by weight.
69% of IWB is already inside OEF.
100% of OEF is already inside IWB.
IWB holds 1,024 companies and OEF holds 104; 103 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 IWB and OEF? 6.8 and 7.3 out of 10
As of October 28, 2026, ETF Copilot scores IWB 6.8 out of 10 and OEF 7.3 out of 10.
They differ most on Quality: IWB 8.0 and OEF 9.6.
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 | IWB | OEF |
|---|---|---|
| Growth | 7.4 | 8.5 |
| Value | 3.6 | 3.4 |
| Risk | 6.7 | 5.6 |
| Quality | 8.0 | 9.6 |
| Return | 7.7 | 8.4 |
IWB is the cheaper of the two at 0.15% a year
As of October 28, 2026, IWB charges 0.15% a year, yields 0.91% and holds $49.0B in assets across 1024 positions.
As of October 28, 2026, OEF charges 0.20% a year, yields 0.85% and holds $20.5B in assets across 104 positions.
| Measure | IWB | OEF |
|---|---|---|
| Expense ratio | 0.15% | 0.20% |
| Dividend yield | 0.91% | 0.85% |
| Assets under management | $49.0B | $20.5B |
| Holdings | 1024 | 104 |
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, “IWB vs OEF holdings overlap and scores”, as of October 28, 2026.
https://etf-copilot.com/compare/iwb-vs-oef
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