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Should iShares S&P 100 ETF (OEF) Be on Your Investing Radar?

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Looking for broad exposure to the Large Cap Blend segment of the US equity market? You should consider the iShares S&P 100 ETF (OEF - Free Report) , a passively managed exchange traded fund launched on October 23, 2000.

The fund is sponsored by Blackrock. It has amassed assets over $29.32 billion, making it one of the largest ETFs attempting to match the Large Cap Blend segment of the US equity market.

Why Large Cap Blend

Large cap companies usually have a market capitalization above $10 billion. They tend to be stable companies with predictable cash flows and are usually less volatile than mid and small cap companies.

Typically holding a combination of both growth and value stocks, blend ETFs also demonstrate qualities seen in value and growth investments.

Costs

Investors should also pay attention to an ETF's expense ratio. Lower cost products will produce better results than those with a higher cost, assuming all other metrics remain the same.

Annual operating expenses for this ETF are 0.2%, putting it on par with most peer products in the space.

It has a 12-month trailing dividend yield of 0.78%.

Sector Exposure and Top Holdings

ETFs offer a diversified exposure and thus minimize single stock risk but it is still important to delve into a fund's holdings before investing. Most ETFs are very transparent products and many disclose their holdings on a daily basis.

This ETF has heaviest allocation to the Information Technology sector -- about 42.3% of the portfolio. Telecom and Financials round out the top three.

Looking at individual holdings, Nvidia Corp (NVDA) accounts for about 10.91% of total assets, followed by Microsoft Corp (MSFT) and Apple Inc (AAPL).

The top 10 holdings account for about 53.69% of total assets under management.

Performance and Risk

OEF seeks to match the performance of the S&P 100 Index before fees and expenses. The S&P 100 Index measures the performance of the large-capitalization sector of the U.S. equity market. It is a subset of the S&P 500 and consists of blue chip stocks from diverse industries in the S&P 500 with exchange listed options & the Index represented approximately 45% of the market capitalization of listed U.S. equities.

The ETF return is roughly 20.22% so far this year and was up about 26.55% in the last one year (as of 11/03/2025). In the past 52-week period, it has traded between $240.38 and $348.36.

The ETF has a beta of 1.00 and standard deviation of 16.49% for the trailing three-year period, making it a medium risk choice in the space. With about 105 holdings, it effectively diversifies company-specific risk.

Alternatives

iShares S&P 100 ETF holds a Zacks ETF Rank of 2 (Buy), which is based on expected asset class return, expense ratio, and momentum, among other factors. Because of this, OEF is an outstanding option for investors seeking exposure to the Style Box - Large Cap Blend segment of the market. There are other additional ETFs in the space that investors could consider as well.

The iShares Core S&P 500 ETF (IVV) and the Vanguard S&P 500 ETF (VOO) track a similar index. While iShares Core S&P 500 ETF has $721.51 billion in assets, Vanguard S&P 500 ETF has $783.07 billion. IVV has an expense ratio of 0.03% and VOO charges 0.03%.

Bottom-Line

While an excellent vehicle for long term investors, passively managed ETFs are a popular choice among institutional and retail investors due to their low costs, transparency, flexibility, and tax efficiency.

To learn more about this product and other ETFs, screen for products that match your investment objectives and read articles on latest developments in the ETF investing universe, please visit Zacks ETF Center.


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