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News · Equities · MarketWatch · Sat, Oct 17, 2026 12:00 PM

S&P 500's average stock gains as tech slides into worst week

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The S&P 500’s tech sector just had its worst week in a year and a half, while an equal-weighted version of the index cemented a second-straight weekly

The S&P 500’s tech sector experienced its steepest decline in a year and a half, marking a significant shift in market leadership away from high‑growth technology names.

In contrast, the equal‑weighted version of the index recorded a second straight weekly gain, underscoring the resilience of a more diversified sector mix.

Market Overview

Investors are watching how the pullback in tech may affect broader market sentiment and the performance of indices that give equal weight to all constituents.

Based on reporting from MarketWatch. Read the original.

Read our S&P 500 guide: what moves it, the key data to watch and when it trades.

OpenBook analysis

Market impact

The decline in tech could lift broader markets, especially equal-weighted indices that benefit from a more diversified sector mix. Traders may monitor tech sector momentum as it influences risk sentiment.

Assets in focus

General market context for education only, not investment advice.

This briefing was summarized with automated tools from public reporting by MarketWatch and is general market information, not investment advice. Editorial policy & corrections