S&P 500 Posts First July Loss Since 2014 as Chip Stocks Crater

The S&P 500 index ended July with a monthly loss — its first since July 2014 — capping a volatile stretch that saw dramatic swings in the final trading sessions of the month. The benchmark index's slide broke a run of positive Julys that had lasted a full decade, underscoring how swiftly market sentiment can reverse even during historically strong seasonal periods.

The sharpest pain was concentrated in the semiconductor sector, which suffered its worst monthly performance in 24 years. The breadth and severity of the chip stock selloff rattled investors who had leaned heavily into artificial intelligence-driven optimism that had powered the sector's gains through much of the year. When momentum reversed, the unwind was swift and punishing.

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The month's turbulent finish reflected broader anxieties rippling through equity markets, including uncertainty around interest rate policy, stretched valuations in high-growth technology names, and growing questions about the pace at which AI-linked capital spending will translate into corporate earnings. The whipsaw action in the closing days of the month amplified losses that may have otherwise appeared more modest.

For investors, the July stumble serves as a reminder that seasonal patterns — while historically reliable — are never guaranteed. The combination of a rate-sensitive macro backdrop and an overextended momentum trade in chips created conditions where a relatively modest catalyst could trigger an outsized selloff across the tech-heavy indexes that had led the market higher.

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