Daily Top-10 Movers

Prices are Friday, October 23, 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.

NXP Guides Industrial Up in the High 30s as STMicro Sets a 37% Gross Margin Midpoint

• NXP Semiconductors guided third-quarter revenue to $3.65 billion to $3.85 billion and non-GAAP EPS to $3.89 to $4.32, against consensus of $3.77 billion and $4.14, per Zacks via Yahoo Finance (October 23); management expects automotive growth in the low double digits, Industrial & IoT up in the high-30% range and mobile down in the mid-single digits. Why it matters: NXP reports Tuesday after the close, and on ChipSentinel’s reading a guide for industrial growth far above automotive makes the print the next test of whether the industrial strength Texas Instruments reported October 21 extends to a second analog name; Zacks lists memory shortages as a constraint in mobile.
• STMicroelectronics guided third-quarter net revenue to a $3.70 billion midpoint, up about 6.2% sequentially, with a 37.0% gross margin that includes about 70 basis points of unused-capacity charges, per the company (July 23); it reports on October 29. Why it matters: second-quarter revenue was $3.49 billion, up 26.0%, so the midpoint implies a step-up of about $0.21 billion by ChipSentinel’s arithmetic, and the unused-capacity charge suggests ST still carries slack where Texas Instruments described scarcity.

SanDisk Guides to $10.3 Billion to $10.8 Billion Ahead of Thursday as Micron Gains Premarket

• SanDisk reports after the close on October 29 with guidance of $10.3 billion to $10.8 billion in revenue and $44 to $46 in adjusted EPS, and traded at $1,254.29, up 1.32%, in premarket, per TipRanks (October 26). Why it matters: TipRanks reports Mizuho expects NAND prices to stay firm through 2027, so on ChipSentinel’s reading the quarter’s test is whether results clear a guide set against firm pricing rather than whether prices are still rising.
• Micron closed Friday at $877.55, up 2.46%, and traded at $899.76, up 2.53%, in premarket Monday, per StockAnalysis (8:31 a.m. EDT). Why it matters: ChipSentinel’s arithmetic puts the premarket price about 2.5% above Friday’s close, extending a rebound after Thursday’s 6.26% fall, and the SK hynix shareholder-return announcement due Wednesday is the next read-across for memory valuations.

Amkor Reports Today Against a $2.0 Billion to $2.1 Billion Guide as TSMC Adds a 3nm Fab

• Amkor Technology announces third-quarter results Monday after the close, with a call at 5 p.m. EDT, per the company; its July guidance was revenue of $2.0 billion to $2.1 billion and EPS of $0.72 to $0.82, against second-quarter revenue of $1.90 billion, per MarketBeat. Why it matters: Amkor is the packaging and test read-through for AI demand, and on ChipSentinel’s reading the guided range implies sequential growth of about 5% to 11% on the second-quarter base.
• Digitimes flagged a new 3nm fab at the Southern Taiwan Science Park, a shift of Nvidia-related HBM base-die orders to TSMC, and a question over whether A14 demand includes Intel server processors, per Digitimes (October 23), in analyst Luke Lin’s review of details from TSMC’s third-quarter call. Why it matters: the visible summary gives no capacity or revenue figures, so on ChipSentinel’s reading these are directional signals for TSMC’s capital plan and for the memory suppliers that lose base-die share.

Ten-Year Yield Holds at 4.999% and December Hike Odds Near 71% Ahead of Fed Week

• The 10-year Treasury yield rose 5 basis points to 4.999% on Friday, December Brent settled at $116.72 and CME FedWatch showed about 71% odds of a December quarter-point hike, per Capp Notes (October 23), with the Dow down 1.23% and the Nasdaq Composite down 0.21%, per FNArena (October 26). Why it matters: the Philadelphia Semiconductor Index rose 0.44% to 10,779.46 against that backdrop, and on ChipSentinel’s reading the Federal Reserve meeting on October 27–28 is the near-term macro input for valuation multiples across the group.
• Taiwan plans to add advanced semiconductors and AI servers to its controlled-items list and make unauthorized shipments to China a criminal offense, with penalties of up to five years in prison, per Tech Times (background reading, published October 19). Why it matters: no effective date is set and passage before year-end is uncertain, and the report cites a U.S. indictment alleging about $2.5 billion in diverted Supermicro-linked servers, so the exposure sits with server assemblers and distributors rather than chip revenue.

SemiAnalysis Rates Trainium’s Direction Right; Bank of America Sees Micron Deals at 35%

• SemiAnalysis found Amazon’s Trainium "nowhere close to the maturity of the CUDA ecosystem, but the direction is right," per SemiAnalysis (October 23); in a Qwen3-32B run on 16 Trainium2 chips, compiled mode reached 14,156 tokens per second versus 11,099 in eager mode, and Trainium3 passed 89 of 96 FlexAttention cases.
• Bank of America’s Vivek Arya kept a Buy rating and a $1,550 price target on Micron, expecting memory supply to stay tight in 2027 and 2028 and multi-year agreements to cover about 35% of sales, rising to roughly 50% by 2030, per TipRanks (October 26); he also expects larger buybacks from December 9, subject to approval, against about $35 billion of authorization.

NXP Reports Tuesday and SK Hynix Wednesday, With the Fed Meeting Setting the Macro Tone

• Tuesday, October 27 — NXP Semiconductors reports third-quarter results after the close, with a call at 4:30 p.m. EDT, per the company.
• Wednesday, October 28 — SK hynix reports third-quarter results before 9:00 a.m. Seoul time and is expected to announce shareholder-return measures, per the company.