Market Wrap · August 17, 2026
SanDisk and Micron Rally on a Reshoring Signal as Rate-Sensitive Software Slides
U.S. equities closed lower Monday, August 17, in a cautious session ahead of retail earnings. The S&P 500 (SPY) declined 0.47% to $772.67, the Nasdaq-100 (QQQ) fell 0.16% to $729.87, the Dow (DIA) slipped 0.49% to $534.19, and the Russell 2000 (IWM) declined 0.34%. The 10-year Treasury ETF (IEF) fell 0.21% as yields rose — the 10-year yield climbed to 4.68% and the 30-year hit 5.3%, its highest level since 2007, according to The Motley Fool’s daily market wrap. Crude oil (USO) rose 2.91% and gold (GLD) added 1.00%.
Memory and chip names were the session’s clearest winners on a real, dated catalyst. SanDisk rose 8.88% to $1,786.85, extending a run that began with last week’s investor day and Monday’s 10-K filing, after reports that the Trump administration signaled opposition to Apple sourcing memory chips from China and a preference for domestic or allied suppliers — a policy shift also cited for a roughly 4-5% pop in SK Hynix. Micron rose 4.13% to $1,011.75 on the same reshoring narrative, compounded by comments from Elon Musk arguing that memory, not compute, is now the binding constraint on agentic AI systems. Marvell (MRVL) added 5.54% amid continued investor attention on AI interconnect demand, and SpaceX rose 4.45% to $146.23 on what The Motley Fool described as positive analyst notes, consistent with SpaceX’s reported exclusive commitment to Nvidia chips for its AI buildout.
Rate-sensitive software and mega-cap names fell broadly. ServiceNow dropped 5.08% to $117.70, Datadog fell 3.19%, Nebius fell 3.18%, Microsoft fell 3.04%, and Meta Platforms fell 3.54% amid what one report characterized as broader communications-sector weakness. CrowdStrike, Palo Alto Networks, Fortinet, Oracle, and Salesforce each declined more than 1.4%, without a distinct same-day catalyst tied to any single name.
Elsewhere on the tape
Carvana was the S&P 500’s biggest single-day loser, down 7.3%. A Form 13F filing disclosed that Stanley Druckenmiller’s Duquesne Family Office sold its Micron and Intel positions in the second quarter while increasing its Amazon stake more than tenfold.