Daily Top-10 Movers

Prices are Friday, October 2, 2026 closes at 4:00 PM EDT. Ranked by absolute price change among semiconductor stocks with market cap ≥$5B.

★ highlighted = today's news-driven movers.

Qualcomm and Arm Go to a Jury Over Royalties as STMicro Guides Q4 Revenue Above $4 Billion

• A five-day jury trial between Qualcomm and Arm opened Monday in Delaware federal court, with Qualcomm seeking to stop paying royalties to Arm for up to five years, potentially worth billions of dollars, per The Star. Judge Maryellen Noreika is weighing whether to strike that term, and Arm denies breach and calls the alleged Meta-deal harm speculative. Arm closed Friday at $307.49, up 5.18%, and Qualcomm at $184.87, up 1.53%, per StockAnalysis. Why it matters: the royalty term, not the testing-tool claim, drives the potential award, and the agreement runs through 2033, so the judge’s ruling on that term bounds the outcome before the jury deliberates.
• STMicroelectronics rose 7.03% to $57.26 on Friday; management guides third-quarter revenue to about $3.70 billion at the midpoint and fourth-quarter revenue above $4 billion, per Ad-hoc-news, which cited second-quarter revenue of $3.49 billion, up 26% YoY, and adjusted EPS of $0.31 against $0.26 expected; UBS kept a Buy with a €80 target. Third-quarter results are due October 29, per StockAnalysis. Why it matters: the step-up is attributed to AI data centers and low-earth-orbit satellite communication rather than the auto and industrial cycle that historically drove the stock, so the October 29 print will show how much of the recovery is that mix shift.

Toshiba’s Disk Expansion Hits Seagate and Western Digital as DDR5 Spot Edges Up 0.12%

• Seagate fell as much as 13% to $825.47 and Western Digital as much as 12% to $405.23 on Friday after Nikkei reported Toshiba will invest about ¥60 billion ($400 million) to double hard-disk capacity by fiscal 2027, per Yahoo Finance, which said Toshiba holds just over 10% of the HDD market by capacity and targets 30%. Why it matters: Seagate and Western Digital had gained roughly 240% and 170% this year, so a third supplier doubling capacity challenges the pricing discipline behind AI-storage margins; Goldman Sachs still sees Seagate guiding about 3% above consensus, per Investing.com.
• DRAM spot on October 2 averaged $58.00 for DDR5 16Gb (2Gx8) 4800/5600, up 0.12%, and $83.59 for DDR4 16Gb (2Gx8) 3200, down 0.09%. Why it matters: spot prices barely moved in either direction, so the quarter’s pricing story remains in contract negotiations rather than the spot market, and DDR4 still carries a higher spot price per chip than DDR5.

Investors Pencil In 5% to 10% Higher TSMC Prices as Lam Proposes Self-Aligned CFET

• Institutional investors expect TSMC advanced-node prices to rise 5% to 10% in 2027, advanced packaging 10% to 15% and mature nodes 3% to 5%, against third-quarter guidance of $44.6 billion to $45.8 billion in revenue and a 65% to 67% gross margin, per TrendForce (published October 5), which said JPMorgan expects $45.8 billion and a 66.8% margin and that A14 pilot production in Hsinchu could begin in the first quarter of 2027. Why it matters: margin faces pressure from the N2 ramp and overseas fabs, so price increases are what protect the 65% to 67% band; the 2027 figures are investor estimates, not company guidance.
• Lam Research proposed a self-aligned CFET architecture extending CMOS below 10 angstroms, with 6T SRAM bit cells 52.7% smaller than on N3, per Semiconductor Engineering (October 2 weekly review). Why it matters: on ChipSentinel’s reading, a stacked-transistor roadmap would raise process-step counts per wafer and so support late-decade equipment content, but this is a research proposal with no disclosed customer or timing, not an order signal.

A 29,000-Job Print Cuts October Hike Odds to About 25% as the SOX Trails the S&P 500

• September payrolls rose 29,000 against 84,000 expected, unemployment rose to 4.2% from 4.1%, and July and August were revised down by a combined 60,000 jobs, per Invezz. Why it matters: the actual print undershot the 89,000 forecast cited in Friday’s preview, and a softer labor market eases the rate pressure on long-duration chip earnings, though it also raises questions about end-demand for cyclical analog and industrial names.
• The market-implied probability of an October Fed hike fell to about 25% from about 70% before the report, with December now seen as likelier, and the 10-year yield dropped more than 5 basis points to 5.176%, per Invezz. Why it matters: Goldman Sachs noted the SOX fell 11% over two months while the S&P 500 rose 4%, per Investing.com, a gap it called a more constructive setup into earnings.

Goldman Backs Applied and Microchip Before Earnings as Susquehanna Counts Intel’s Share Loss

• Goldman Sachs analyst James Schneider expects Applied Materials to raise its margin targets and give a robust growth outlook at SEMICON West on October 13, and sees the WFE market growing toward $300 billion over time, per Investing.com (published October 5). The note also names Microchip Technology among its favorite names, saying the Street underestimates the analog recovery with gross margin returning to about 66% by the end of 2026, and rates Qualcomm and KLA Neutral.
• Susquehanna estimates Intel’s share of notebook processor models fell 3.9 percentage points to 68.1% in the third quarter while AMD gained 3.1 points to 29.3%, and that Intel’s desktop share fell to about 76%, its lowest since the second quarter of 2023, per Investing.com (published October 5).

Marvell’s Investor Day Tuesday and TSMC’s September Sales Thursday Frame the Week

• Tuesday, October 6 — Marvell Technology investor day, where Morgan Stanley’s Joseph Moore expects fiscal 2030 revenue guidance above $40 billion, per TipRanks.
• Thursday, October 8 — TSMC September revenue report, ahead of its October 15 third-quarter results, per Techi.