OEF
iShares S&P 100 ETF · iShares
US Broad Market
1Y Return
+22.5%
Expense Ratio
0.20%
AUM
$21B
Dividend Yield
1.02%
Avg Annual Growth (10Y)
+17.9%
Issuer
BlackRock iShares

Overview

The S&P 100 — America's hundred largest mega-cap companies, the most concentrated mainstream slice of the US market.

Top Holdings

TickerHoldingWeight
NVDANVIDIA Corp.8.9%
MSFTMicrosoft Corp.7.4%
AAPLApple Inc.7.2%
AMZNAmazon.com Inc.4.8%
METAMeta Platforms3.5%
AVGOBroadcom Inc.3.4%
GOOGLAlphabet Inc. A3.3%
TSLATesla Inc.2.4%
BRK.BBerkshire Hathaway2.2%
LLYEli Lilly & Co.1.9%

Fund Details

Index
S&P 100
# Holdings
100
Inception
Oct 2000
Exchange
NYSE Arca
Structure
Open-End Fund
Distribution
Quarterly
Avg Annual Growth (10Y)
+17.9%
Avg Annual Yield (10Y)
1.60%

Investment Thesis

If the last decade taught investors anything, it is that the biggest US companies kept getting bigger — and OEF is the purest index expression of that trend, dropping the S&P 500's smaller 400 names entirely. It has outrun the broader index through the mega-cap era. The same concentration cuts both ways: this is a bet that scale advantages in AI, cloud and capital keep compounding at the very top.

Who It's For

Investors who believe mega-cap dominance persists and want more of the top 100 than the S&P 500 gives them, in a liquid fund with a deep options market (it underlies OEX index options).

10-Year History

Annual Closing Price
YearClose% Chg
2016$81.82--
2017$99.01+21.0%
2018$93.07-6.0%
2019$120.99+30.0%
2020$145.18+20.0%
2021$187.29+29.0%
2022$147.96-21.0%
2023$193.82+31.0%
2024$251.97+30.0%
2025$320.00+27.0%
Annual Dividend Yield
YearYield
20162.00%
20171.90%
20182.10%
20191.80%
20201.50%
20211.30%
20221.70%
20231.50%
20241.20%
20251.00%
Annual AUM
YearAUM% Chg
2016$4B--
2017$5B+25.0%
2018$5B+0.0%
2019$6B+20.0%
2020$7B+16.7%
2021$9B+28.6%
2022$8B-11.1%
2023$10B+25.0%
2024$13B+30.0%
2025$19B+46.2%

Historical figures are ETFHub estimates modelled from asset-class return patterns and may differ from official fund records. Data as of August 2026.

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