Key Highlights

  • Nvidia (NASDAQ:NVDA) declined 3.17% in the regular session on November 4, 2026, as the PHLX Semiconductor index lost 3.13% and the Dow advanced 3%, per published coverage.
  • Micron (NASDAQ:MU) shed 7.00% on November 4, 2026, while SanDisk dropped 7.91% during the same session, according to a single published summary that gives no catalyst.
  • Arm (NASDAQ:ARM) was reported 2% to 4% lower after hours on November 5, 2026, despite USD 1.44 billion in Revenue beating forecasts, since royalties of USD 670 million lagged USD 712 million.
  • In Asian trading on November 5, 2026, Japanese toolmaker Advantest fell 11.7% and Lasertec lost 11.8%, according to one summary, which may offer a clue for Applied Materials (NASDAQ:AMAT).

Nvidia (NASDAQ:NVDA) Falls 3.17% as the Chip Group Slid Against a Rising Dow

Nvidia fell 3.17% in the November 4, 2026 session, and the PHLX Semiconductor Index gave up 3.13%, per published coverage. The slide happened on a day the Dow advanced 3%, so chip shares went against the broad market. With the index falling nearly as much as Nvidia, the selling appears to have swept across the group rather than centering on one firm. Coverage characterizes the day as Capital exiting AI-linked stocks, a broad description rather than a corporate event. Chip shares often move as a unit because investors price them against shared assumptions about AI spending, so a group move can reset valuations without any change in company earnings. The coverage gives no index closing level or Volume and names no company announcement for Nvidia. The central hazard is continued rotation, or a sharp reversal, so several later trading days deserve scrutiny before anyone labels this a trend.

Micron (NASDAQ:MU) Drops 7.00% as Memory Shares Slide Together

Micron lost 7.00% in the November 4, 2026 session, based on one published summary. SanDisk slipped 7.91% during that window, and the summary names no single catalyst behind either decline. Memory stocks had been leaders in 2026, so a turnaround of this size tends to draw notice from holders who bought into the rally. Two memory companies sliding by similar margins points toward group trading rather than a result specific to one business. The material does not address how the wider semiconductor complex performed that session, so it cannot say whether Micron's decline matched the chip market as a whole. Memory pricing runs in cycles and the material says nothing about Micron's outlook, which leaves the Reversal unconnected to any Earnings or guidance update. A 7% move in a major position can materially change returns, so commentary on pricing, Demand and capital spending deserves review before one session is deemed a turning point.

Arm (NASDAQ:ARM) Trades Lower After Hours Despite a Revenue Beat

Arm was reported 2% to 4% lower in extended trading on November 5, 2026, even though revenue reached USD 1.44 billion, up 27% and above the USD 1.38 billion forecast. Royalty income of USD 670 million came in under the USD 712 million expectation, and this gap is the report's soft spot. Royalties reflect how much licensed technology customers actually deploy, so a shortfall there may signal softer demand for the core licensing model even as overall revenue expands. Non-royalty lines can lift the headline figure, whereas royalties track the underlying designs, which is why investors frequently put more weight on that line. The beat and the shortfall pull in opposite directions, and the extended-hours range is only a first impression. Broader sentiment toward the sector could also amplify or cushion the move. The principal hazard is that a robust Top Line masks weaker licensing demand, a problem that would extend well beyond this release. Investors in Arm (NASDAQ:ARM) may therefore track royalty trends in upcoming reports.

Skyworks (NASDAQ:SWKS) Drops About 3% After a Goldman Sell Rating

Skyworks fell roughly 3% on November 4, 2026, following a Goldman Sell rating, per the topic line in published summaries. That drop is reported and has not been matched to exchange data for this article. The forward guide is better supported: December-quarter revenue is pegged about 7% under September's figure, a number repeated by two published summaries. Smaller expected sales shrink the earnings analysts model, and that feeds into the share price. Skyworks is characterized as an Apple supplier, with the guidance cast as a possible signal for the Supply chain, a reading rather than a reported fact. The Goldman Sell call is presented without a price target or stated rationale, which limits its weight by itself. Guidance under the previous quarter's sales can drag on projections for multiple periods, meaning one session's slide may Fail to capture the full set of later revisions. Guidance is a company projection instead of a delivered result, so it could turn out cautious or optimistic once the quarter ends. Anyone following Skyworks (NASDAQ:SWKS) should read the company's release wording directly.

Applied Materials (NASDAQ:AMAT) Has No Reported Move, but Japan Offers a Read-Through

Applied Materials has no price move reported in the material here, so it appears only as a read-through rather than a stock with a confirmed decline. One published summary notes that Japanese equipment names slid in Asian trading on November 5, 2026: Advantest 11.7% lower, Lasertec 11.8% lower, Tokyo Electron near 10% lower and SoftBank 5.8% lower. The summary offers no explanation for those declines. Equipment suppliers sell the tools that chip plants use, so when clients budget less, orders for those tools can cool, and investors often reprice that exposure across the cohort together. Applied Materials (NASDAQ:AMAT) and Lam Research count as US competitors in the same equipment cohort, which makes the Japanese move relevant to them as a read-through. Confirming that link would require the US regular-session result for Applied Materials after the US open, plus management commentary on customer spending. One round of reported moves is thin evidence alone, so compare closing prices with exchange data before drawing conclusions.

Where Things Stand

Micron (NASDAQ:MU) produced the biggest regular-session slide on the list, at 7.00% on November 4, 2026. The names have a chip-sector connection, yet the reasons given differ. Nvidia (NASDAQ:NVDA) moved with a described outflow from AI-linked shares. Skyworks (NASDAQ:SWKS) responded to a Goldman Sell rating and a soft guide. Arm (NASDAQ:ARM) traded lower after hours even though revenue beat. Applied Materials (NASDAQ:AMAT) recorded no reported move, so its tie to the Japanese selloff remains only a possible read-through. Every number is a report rather than a verified fact, and the material offers a company-level reason for only a few of these moves.