iShares S&P 100 ETF (OEF) is a US large-cap blend ETF. As of October 28, 2026, ETF Copilot scores OEF 7.3 out of 10 — highest on Quality (9.6), lowest on Value (3.4). It trades at 25.6 times earnings, against its own median of 23.7. Its ten largest holdings are 52% of the fund.
What stands out in OEF's data
The 100 largest U.S. companies, concentrated by market weight.
Has outpaced the broad large-cap market over three years — a tighter basket that has paid off.
A 27% annualized three-year return tops the 25% category median. Return on invested capital of 29.9% also runs ahead of the 26.4% norm.
A blue-chip anchor that concentrates a large-cap allocation on the biggest names.
How is OEF rated? ETF Copilot scores iShares S&P 100 ETF (OEF) 7.3 out of 10
As of October 28, 2026, ETF Copilot scores iShares S&P 100 ETF (OEF) 7.3 out of 10 overall.
ETF Copilot scores (0–10 scale, higher is better):
- Overall: 7.3 / 10
- Growth: 8.5 / 10
- Value: 3.4 / 10
- Risk: 5.6 / 10
- Quality: 9.6 / 10
- Return: 8.4 / 10
Is OEF expensive right now? It trades at 25.6 times earnings, against its own median of 23.7
As of October 28, 2026, OEF is more expensive than 68% of its own last 9 years.
Trailing 12 months, built from OEF's holdings. How we calculate this →
What's inside OEF? 52% Tech
What's inside OEF: Size (Large 98%, Mid 0%, Small 2%); Geography (International 1%, US 99%); Tech 52.3%; Magnificent 7 46.1%; AI 30.3%; Semiconductors 21.2%; Memory 17.8%.
What are OEF's top holdings? The ten largest are 52% of the fund
Nvidia, Apple, Microsoft, Amazon.com, Alphabet, Broadcom, Facebook, Tesla and Eli Lilly are OEF's largest holdings, in that order.
More concentrated than 92% of US Large Cap Blend ETFs.
Half of OEF's weight sits in its 10 largest positions, and once those weights are taken into account it behaves like 25 equally weighted holdings.
What is OEF's expense ratio? 0.20% 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.
| Measure | OEF |
|---|---|
| Expense ratio | 0.20% |
| Dividend yield | 0.85% |
| Assets under management | $20.5B |
| Holdings | 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.
Cite this
ETF Copilot, “iShares S&P 100 ETF (OEF) scores and holdings analysis”, as of October 28, 2026.
https://etf-copilot.com/etf/oef
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