News/News/Oct 19, 2026

Chip stocks snap nine-day losing streak on Oct. 19; Sandisk up 6%, Micron nearly 4%, Marvell 7%

QQQSandiskSNDKMicronMUWestern DigitalWDCSeagate TechnologySTXSK hynixSKHYCoreWeave

Semiconductor stocks rebounded on Monday after nine straight losing sessions, with the VanEck Semiconductor ETF up nearly 3% as traders moved back into tech after the prior week's AI-led selloff. Memory names led: Sandisk rose more than 6% and Micron almost 4%, while Marvell gained nearly 7% and Nvidia about 2%. Neocloud stocks also bounced after Goldman Sachs upgraded CoreWeave to buy; the Nasdaq closed up 1.1%.

  • VanEck Semiconductor ETF (SMH) up nearly 3%, ending a nine-day slide
  • Sandisk +6%, Micron nearly +4%, Marvell nearly +7%, Nvidia about +2%
  • Goldman Sachs upgraded CoreWeave to buy; Nebius up more than 5%
  • Nasdaq +1.11% to 26,430.89; S&P 500 +0.41%
QQQ around the story · hourly24 h reaction ▼ 0.23%
706.98718.66730.33Chip stocks snap nine-day losing streak on Oct. 19; Sandisk up 6%, Micron nearly 4%, Marvell 7%1Oct 15Oct 16Oct 18Oct 19Oct 20

Moves this explains

DDOG+6.56%Oct 18 · Rose 6.6% after Bernstein upgraded Datadog to outperform from market perform, arguing AI workloads will lift demand for cloud monitoring. The upgrade landed on a day tech stocks rebounded, with the Nasdaq up 1.1%.SKHY+5.40%Oct 18 · Rose 5.4% as memory stocks led a chip rebound that ended nine straight losing days for the sector: the VanEck Semiconductor ETF gained nearly 3%, Sandisk more than 6% and Micron almost 4%. No SK hynix-specific catalyst was reported; the move tracked the sector.SNDK+5.77%Oct 18 · Rose 5.8% as memory stocks led a chip rebound that ended nine straight losing days for the sector: the VanEck Semiconductor ETF gained nearly 3% and Micron almost 4%. No Sandisk-specific catalyst was reported; the move tracked the sector.STX+5.23%Oct 18 · Rose 5.2% as memory and storage stocks led a chip rebound that ended nine straight losing days for the sector: the VanEck Semiconductor ETF gained nearly 3%, Sandisk more than 6% and Micron almost 4%. No Seagate-specific catalyst was reported; the move tracked the sector.WDC+7.15%Oct 18 · Rose 7.2% as memory and storage stocks led a chip rebound that ended nine straight losing days for the sector: the VanEck Semiconductor ETF gained nearly 3%, Sandisk more than 6% and Micron almost 4%. No Western Digital-specific catalyst was reported; the move tracked the sector.
Source
CNBC
Oct 19, 2026
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