Is OEF a good investment?

iShares S&P 100 ETF (OEF) is a US large-cap blend ETF. As of September 11, 2026, ETF Copilot scores OEF 5.4 out of 10 — highest on Quality (9.6), lowest on Growth (1.8). It trades at 26.1 times earnings, against its own median of 22.1. Its ten largest holdings are 52% of the fund.

Updated September 11, 2026

How is OEF rated? ETF Copilot scores iShares S&P 100 ETF (OEF) 5.4 out of 10

As of September 11, 2026, ETF Copilot scores iShares S&P 100 ETF (OEF) 5.4 out of 10 overall.

ETF Copilot scores (0–10 scale, higher is better):

Overall: 5.4 / 10
Growth: 1.8 / 10
Valuation: 2.6 / 10
Risk: 4.8 / 10
Quality: 9.6 / 10
Return: 8.3 / 10

What is OEF's expense ratio? 0.20% 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.

iShares S&P 100 ETF (OEF) — cost, income and size
Measure	OEF
Expense ratio	0.20%
Dividend yield	0.95%
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.

What stands out in OEF's data

The top 100 U.S. stocks, a concentrated slice of the market's largest names.

Profitability runs well above the typical large-cap blend fund — these are the market's most established earners.

EBITDA margin of 44.5% sits ahead of most peers and above the category median of 40.0%. The fund also trades at trailing P/E multiple of 26.1x.

A concentrated anchor for a U.S. equity allocation, built on the hundred largest companies.

Why did OEF move this week? It fell 1.0% in the week to September 11, 2026 — Nvidia and Microsoft drove it

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.

Is OEF expensive right now? It trades at 26.1 times earnings, against its own median of 22.1

As of September 11, 2026, OEF is more expensive than 86% of its own 114 monthly readings since 2017 — 98 of those months were cheaper than today.

Trailing twelve-month, computed by ETF Copilot from the fund's holdings rather than quoted from a data provider, and rebuilt nightly.

What's inside OEF? 55% Tech

What's inside OEF: Size (Large 100%, Mid 0%, Small 0%); Geography (International 1%, US 99%); Tech 54.6%; Magnificent 7 46.5%; AI 30.1%; Semiconductors 22.2%; Memory 18.5%.

What are OEF's top holdings? The ten largest are 52% of the fund

Nvidia, Apple, Microsoft, Amazon.com, Alphabet, Broadcom, Meta Platforms, Micron Technology and Tesla are OEF's largest holdings, in that order.

More concentrated than 90% of US Large Cap Blend ETFs.

Half of OEF's weight sits in its 9 largest positions, and once those weights are taken into account it behaves like 24 equally weighted holdings.

Cite this

ETF Copilot, “iShares S&P 100 ETF (OEF) scores and holdings analysis”, as of September 11, 2026.
https://etf-copilot.com/etf/oef