Key Highlights

● Monolithic Power rose in mid-morning trading on Friday, October 30, 2026.

● Adjusted Earnings of $8.19 a share beat the $7.75 estimate.

● Fourth-quarter Revenue guidance of $1.315 billion to $1.385 billion topped the $1.22 billion consensus.

● Its closing move was not confirmed.

Monolithic Power Systems (NASDAQ:MPWR) climbed in mid-morning trading on Friday, October 30, 2026, standing out on a day when chip stocks were otherwise in retreat. The power-management chipmaker reported third-quarter adjusted earnings of $8.19 a share, ahead of the $7.75 analysts had expected, and revenue of $1.2 billion, above the $1.16 billion consensus.

Its closing move in the chip rout was not confirmed, so it is unclear whether the early gain held through the end of the session.

The outlook did the talking

The guidance stood out. Monolithic Power forecast fourth-quarter revenue of $1.315 billion to $1.385 billion, well above the $1.22 billion analysts had pencilled in. Even the bottom of that range cleared the consensus comfortably.

Growth came from data-center-related products. The Enterprise Data segment surged from a year earlier, and the Communications Business grew sharply too. The company also raised its growth outlook for Enterprise Data.

Monolithic Power designs chips that manage and convert power in electronic systems, including the high-performance computing systems used in AI data centers.

Against the tide

The early gain was unusual. The Philadelphia Semiconductor index closed at 10,688.80 after a steep fall as Intel (NASDAQ:INTC)'s weak fourth-quarter guidance and cash-burn warning set off a sector-wide rout. Intel suffered its biggest one-day drop on record, by one account, while other outlets called it the worst day since 1974.

Peers fell hard. Advanced Micro Devices (NASDAQ:AMD) closed at $504.80, Nvidia (NASDAQ:NVDA) closed at $204.64 after losing about $185 billion in market value, according to market data, and Qualcomm (NASDAQ:QCOM), Marvell Technology (NASDAQ:MRVL), Broadcom (NASDAQ:AVGO) and Micron (NASDAQ:MU) all slid. Equipment makers Applied Materials (NASDAQ:AMAT) and Lam Research (NASDAQ:LRCX) fell on doubts about AI Capital spending.

Intel CEO Lip-Bu Tan said: "Despite near-term headwinds across the PC industry, Demand for our CPUs remains robust." A Bank of America (NYSE:BAC) analyst said the "agentic tide" in Data Center is "more than offset by PC/supply headwinds."

Monolithic Power's report showed data-center demand translating into revenue growth and a higher outlook, a contrast with the PC-driven weakness that sank Intel.

Market backdrop

Wall Street had its worst day since June. The Nasdaq Composite fell 747.73 points to 25,437.00, its worst session since June 5, and the Nasdaq-100 closed at 28,384.85. The S&P 500 dropped 140.32 points to 7,580.07, and the Dow Jones Industrial Average lost 572.25 points to 51,770.31. Technology was the S&P 500's worst sector.

Amazon (NASDAQ:AMZN)'s negative trailing free Cash Flow and Alphabet (NASDAQ:GOOGL)'s record selloff on Thursday kept the focus on whether AI spending can be sustained. A senior market analyst said: "The message from investors is becoming clearer: strong AI demand is no longer enough on its own." An Investment strategist said: "The earnings bar is very high."

What to watch

Investors will watch whether Monolithic Power delivers fourth-quarter revenue within its $1.315 billion to $1.385 billion range and whether Enterprise Data keeps pace with the raised outlook. Spending commentary from the largest cloud companies will matter for that business.

The broader chip sector's direction will also shape the stock. Super Micro Computer (NASDAQ:SMCI) reports Tuesday, November 3, after the close, and Qualcomm reports Wednesday, November 4. The midterm elections are Tuesday, and the October jobs report arrives Friday, November 6. Markets have priced in a December Fed rate hike.