iShares S&P 100 ETF (OEF) closed at $382.48 on October 19, 2026, up 0.6% from the previous close, on volume of 154,121 shares (30-day average 200,136).
Data as of October 19, 2026.
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The iShares S&P 100 Index Fund seeks investment results that correspond generally to the price and yield performance before fees and expenses of U.S. large-cap stocks as represented by the Standard & Poors 100 Index.
iShares S&P 100 ETF trades on the ARCA stock market under the symbol OEF.
As of October 20, 2026, OEF stock price climbed to $384.38 with 25,531 million shares trading.
OEF has a beta of 1.12, meaning it tends to be more sensitive to market movements. OEF has a correlation of 0.96 to the broad based SPY ETF.
OEF has a market cap of $20.60 billion. This is considered a Large Cap stock.
In the last 3 years, OEF traded as high as $390.69 and as low as $193.00.
OEF has underperformed the market in the last year with a price return of +16.4% while the SPY ETF gained +17.2%. However, in the short term, OEF had mixed performance relative to the market. It has outperformed in the last 3 months, returning +5.0% vs +4.0% return in SPY. But in the last 2 weeks, OEF shares have been beat by the market, returning -0.7% compared to an SPY return of -0.5%.
OEF support price is $379.92 and resistance is $385.04 (based on 1 day standard deviation move). This means that using the most recent 20 day stock volatility and applying a one standard deviation move around the stock's closing price, stastically there is a 67% probability that OEF shares will trade within this expected range on the day.
