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Chipmakers including Marvell Technology, Western Digital, and Seagate Technology fell sharply on August 18, 2026, contributing to the Nasdaq's 1.33% drop as the PHLX Semiconductor Index tumbled over 5%.

A strong revenue outlook from AI company Anthropic provided a lift to tech shares on August 17, 2026, helping Nasdaq futures turn positive despite broader market caution.

Artificial intelligence-related equities drove market advances, with Super Micro Computer and CoreWeave contributing to Nasdaq outperformance amid renewed enthusiasm for the sector following recent inflation relief.

The Nasdaq Composite posted a 5.2% weekly gain through August 7, outperforming peers thanks to a sharp rebound in semiconductor names.

Magnificent Seven tech stocks added approximately $1.88 trillion in combined market value over three trading days ending August 3, 2026, powering Nasdaq gains and reflecting renewed investor optimism in AI-related names.

The Nasdaq Composite rose 1% to 25,373.85, the S&P 500 gained 0.7% to 7,489.72, and the Dow Jones Industrial Average advanced 0.53% to 52,485.03, marking a strong close to July with Amazon and chip stocks leading gains.

Nasdaq surged 2.8%, Dow gained 1.2%, S&P 500 rose 1.7% on July 30 driven by Microsoft and Amazon beats; Meta shares fell over 9% after missing EPS estimates by $1.04.

Global stocks dropped amid a deepening semiconductor rout on July 17, 2026, with the Nasdaq Composite falling 1.47% to 25,881.95 as chip stocks tumbled on AI competition concerns and new model comparisons.