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US, Asia Markets Slide; Nvidia Dips on Oil Spike

7/19/2026

41 3 Full Breakdown

Summary

Story summary

US indexes fell as oil prices rose on the Iran war; the S&P 500 dropped 1% and the Dow fell 406 points.
Nvidia, the S&P 500’s biggest weight, fell 2.2% and briefly lost its top-company rank to Apple before regaining it.
Applied Materials fell 5.6% trimming its YTD gain to 106%, and Moonshot’s Kimi K3 AI model raised worries that low-cost rivals could curb chip demand.
Asian indexes dropped, with Taiwan down 6.5% and TSMC sliding 7.3%.

History

Historical Context

In October 1973 OAPEC, under Saudi King Faisal, embargoed the United States and other Israel allies, lifting the posted price from $3 to about $12 per barrel—a 300% rise. The shock cut the S&P 500 17% and the Dow 300 points, creating the first “oil shock” that reshaped markets. Analysts warn that the 1973 precedent foreshadows today’s geopolitical tension threatening equities and chip makers.

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Story summary

US indexes fell as oil prices rose on the Iran war; the S&P 500 dropped 1% and the Dow fell 406 points.
Nvidia, the S&P 500’s biggest weight, fell 2.2% and briefly lost its top-company rank to Apple before regaining it.
Applied Materials fell 5.6% trimming its YTD gain to 106%, and Moonshot’s Kimi K3 AI model raised worries that low-cost rivals could curb chip demand.
Asian indexes dropped, with Taiwan down 6.5% and TSMC sliding 7.3%.

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