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

Designed to provide broad exposure to the Large Cap Blend segment of the US equity market, the iShares S&P 100 ETF (OEF) is a passively managed exchange traded fund launched on October 23, 2000.

Zacks Investment Research • Jul 13, 2026

OEF: Earnings Growth Trends Don't Favor The Market's Top 100 Stocks

iShares S&P 100 ETF tracks the performance of the 100 largest S&P 500 Index stocks, essentially making it a very concentrated mega-cap growth ETF. Its expense ratio is 0.20%. Recent returns relative to S&P 500 Index ETFs like IVV are strong and rational, given the exceptional earnings growth top stocks like Nvidia and Alphabet have experienced. However, Wall Street consensus analysts indicate decelerating earnings growth for OEF and other concentrated cuts of the S&P 500 Index, including XLG and TOPT.

Seeking Alpha • Jun 15, 2026

OEF Returned 314.83% Over 10 Years While SPY Managed 223.37%

Most investors who want broad U.S. large-cap exposure default to an

24/7 Wall Street • Mar 27, 2026

OEF: Waning Absolute And Relative Strength In The S&P 100

I reiterate a hold rating on iShares S&P 100 ETF (OEF) due to waning momentum and valuation concerns. OEF's valuation is elevated, with a 23.8x P/E and a PEG of 2.3x, while earnings growth has slowed. Technical signals suggest weakening momentum, with key support at $327 and potential downside to $305–$310 if broken.

Seeking Alpha • Feb 20, 2026

S&P 500 Vs. Small Caps: Bigger Is Still Better; Why Smaller Stocks Are Useless, For Now

Small Cap stocks have failed to add alpha for many years. And the odds are more stacked against them than ever.

Seeking Alpha • Feb 1, 2026

Wow, iShares OEF ETF Holds 11% in One Single Stock

When you own the 100 largest companies in America, you're betting on a simple idea: big gets bigger.

24/7 Wall Street • Jan 23, 2026

Investors Go Beyond S&P 500 To Cash In On Large-Cap Growth Boom

It's all about large-cap growth again this year for investors. And investors are now looking beyond just S&P 500 index funds to cash in.

Investors Business Daily • Oct 23, 2025

Investors Scramble Like Crazy To Buy Up These 10 ETFs

The popularity of ETFs continues to surge this year. And investors definitely have a type they prefer.

Investors Business Daily • Oct 9, 2025

ETFs to Gain as Inflation Edges Higher in August

Inflation rose in August, but jobless claims rose, too, shaping Fed rate cut odds and boosting the appeal of large-cap blend ETFs like ITOT, EDOW and IVV.

Zacks Investment Research • Sep 12, 2025

OEF: A Better Play Than The Top 20, 50 And 500

Mega and large cap stocks continue to outperform, driven by robust earnings growth, especially in tech, financials, and healthcare sectors. OEF provides diversified access to the 100 largest S&P 500 companies, balancing mega cap upside with lower risk than more concentrated ETFs. OEF has consistently outperformed the S&P 500 over multiple timeframes, with strong price momentum, healthy liquidity, and a competitive expense ratio.

Seeking Alpha • Sep 11, 2025