Tech stocks got off the mat Monday. Most of Wall Street stayed pinned down. Palantir (PLTR) and Datadog (DDOG) jumped over 4% each, joined by Snowflake (SNOW) and a broad recovery in chip stocks after last week's beating. Western Digital (WDC) and Sandisk (SNDK) led the storage rally, while Micron (MU), Intel (INTC) and Nvidia (NVDA) also gained. More than nine in 10 semiconductor names and roughly four in five software stocks advanced in Yahoo Finance's watchlists.Semis and software heat map — October 19, 2026·Yahoo Finance AlphaSpace Buyers had fresh encouragement. Bernstein upgraded Datadog, citing stronger AI-related demand. Palantir announced a government-cloud partnership, although its rebound reached a potential selling zone around $195–$200.
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