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S&P 500 down 0.19% while equal‑weight index rises; Magnificent Seven now under 30% of value, sparking a shift to non‑tech stocks.
The S&P 500 closed 0.19% lower yesterday, but the equal‑weight version of the index edged up, highlighting a widening gap between the “Magnificent Seven” tech giants and the rest of the market [1].
| At a glance | |
|---|---|
| S&P 500 price change | –0.19% |
| Equal‑weight S&P 500 change | +0.01% (marginally up) |
| Magnificent 7 share of S&P | < 30% (down from > 30%) |
| Year‑to‑date S&P gain | +1.73% |
The seven AI‑heavy stocks—Alphabet, Amazon, Apple, Meta, Microsoft, Nvidia and Tesla—have slipped from a dominant > 30% weighting in the index to just under that level, according to Fortune’s market recap [1]. Only Alphabet and Amazon remain in positive territory; Meta is down 4.39% and Apple down 3.98% year‑to‑date. Analysts attribute the shift to slower earnings growth for the tech cohort and a reallocation of cash from buybacks to AI‑related capital spending [1].
Morgan Stanley’s Lisa Shalett notes that earnings acceleration is now favoring the “493” non‑tech constituents, while tech buy‑back activity wanes [1]. Yardeni Research observes that the broader “Impressive‑493” has outperformed the Magnificent 7 since November and is expected to keep leading in 2026 [1].
Across the broader market, the S&P 500 extended its nine‑week winning streak with a modest 0.2% gain on Friday, lifting the index 19.5% since the March 30 low [2]. Yet that rally is heavily concentrated: technology now accounts for about 35% of the index, versus roughly 20% a decade ago [2]. Many sectors—industrial, consumer discretionary and others—have lagged the rally, underscoring the risk of a market driven by a limited set of AI and semiconductor names [2].
The divergence between the cap‑weighted and equal‑weight indices suggests that while the overall market is still rising, the bulk of that gain is coming from the smaller, non‑tech segment of the S&P 500 [1].
The market’s current split—cap‑weighted indices still buoyed by a handful of AI leaders while equal‑weight stocks hold steady—raises the question of how long the tech‑driven rally can sustain itself without broader sector participation.
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AI-assisted synthesis by the TrendWatcher Editorial Desk · sourced from 4 outlets · Jun 18, 2026 · How we report
It is about 2% below the record closing level of 7,609.78 set on June 2.
The forward price‑earnings ratio is 21.26 as of the latest Thursday afternoon data.
Over the past three decades, the S&P 500 has declined an average of 0.5% during August, with larger corrections often occurring in midterm election years.
Investors are reacting to AI‑related earnings reports, mixed results from major tech and non‑tech companies, and geopolitical tensions such as the ongoing Iran conflict.
Unlike the price‑weighted Dow Jones and the Nasdaq’s tech‑heavy composition, the S&P 500 includes a broader mix of large‑cap stocks from both the NYSE and Nasdaq, making it a more reliable gauge of overall market performance.