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Sandisk, Datadog, Amazon Lead S&P 500 As AI Stocks Rebound

Western Digital, Sandisk, Datadog, Twilio and Amazon led the S&P 500 on Monday as AI-related stocks rebounded. Western Digital (WDC) rose 6.1% to 352.21, still below all its key moving averages, after plunging 16.4% last week. The hard-drive maker reports fiscal Q1 results late Thursday, kicking off a round of earnings for memory-related companies.

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AMZN

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Amazon

Relevance: medium

MarketUS stocks
SectorConsumer Discretionary
IndustryBroadline Retail
Market cap$2.7T
Close on 10/19/2026262.45
Change that session+4.98%
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NVDA

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Nvidia

Relevance: low

MarketUS stocks
SectorInformation Technology
IndustrySemiconductors
Market cap$5.2T
Close on 10/19/2026217.09
Change that session+1.38%
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SPY

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SPDR S&P 500 ETF

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MarketUS stocks
SectorETF
Close on 10/19/2026766.48
Change that session+0.42%
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