iShares S&P 100 ETF (OEF) › Analysis

iShares S&P 100 ETF (OEF) stock analysis, October 1, 2026: New all-time high at $382.08, but equal-weight RSP hits $100B AUM

Published October 1, 2026 · OEF chart, levels and live analysis

Key Updates

OEF has advanced 5.86% since the July 29 report, reaching $382.08, and establishing a new all-time high above the previous peak of $375.65. The ETF has now posted a year-to-date gain of 11.40%, with a robust 23.97% advance over the past six months. This move confirms the bullish trend that was emerging from the June correction, with the fund now trading well above prior resistance levels.

Current Trend

The upward trajectory remains firmly intact, with OEF up 11.40% YTD and 23.97% over the last six months. The 1.82% gain over the past month, combined with the 5.86% appreciation since the last report, indicates accelerating momentum. The fund has fully recovered from the May-June correction and is now trading at record levels, suggesting strong underlying demand for large-cap U.S. equities. The slight 0.40% pullback over five days appears to be a minor consolidation within a broader uptrend rather than a reversal signal.

Investment Thesis

The investment thesis for OEF centers on the continued outperformance of mega-cap U.S. equities, which dominate the S&P 100 index. The fund's strong 6-month performance of 23.97% reflects the persistent investor preference for large, established companies with stable earnings. While the broader market narrative shows growing interest in equal-weight strategies — as evidenced by Invesco's RSP reaching $100 billion in AUM — the market-cap-weighted approach of OEF continues to benefit from the concentration of capital in its largest constituents. The recent S&P index changes, including the addition of Bloom Energy, Illumina, and Everpure to the S&P 500, may signal evolving sector dynamics within large-cap indices.

Thesis Status

The thesis remains constructive and has been strengthened by recent price action. The breakthrough above the May 28 all-time high of $375.65 confirms that the correction was a temporary pause within a secular uptrend. The 11.40% YTD gain, achieved despite the mid-year volatility, demonstrates the resilience of large-cap U.S. equities. However, the growing popularity of equal-weight and Nasdaq-100 ETFs suggests some investors are positioning for potential concentration risk, which could temper the relative outperformance of OEF in the near term.

Key Drivers

Several factors are influencing OEF's performance:

Technical Analysis

OEF is trading at $382.08, a new all-time high that surpasses the previous peak of $375.65. The fund has established a clear uptrend from the June low of $359.09, with successive higher lows and higher highs. The immediate support level lies at the prior resistance zone of $375.65, which should now act as a floor for any pullback. Secondary support is at the $368.41 level from the June 17 report. The 5-day decline of 0.40% is minimal and does not threaten the bullish structure. The 23.97% six-month gain suggests strong institutional accumulation, with no signs of distribution at current levels.

Bull Case

Bear Case

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