Key Highlights

● Intel collapsed to close at $65.76 on Friday, October 30, 2026.

● Volume reached 447.8 million shares, several times the usual pace.

● The Philadelphia Semiconductor index fell to 10,688.80.

● The Nasdaq-100 dropped roughly 1,018 points.

Intel (NASDAQ:INTC) delivered the jolt that defined trading on Friday, October 30, 2026. The chipmaker's shares collapsed to close at $65.76, a decline market reports described as the steepest one-day drop on record for the stock, while other reports called it Intel's worst day since 1974. Volume reached 447.8 million shares, several times the usual pace.

The damage did not stay with Intel. The Philadelphia Semiconductor Index, the benchmark for chip stocks, closed at 10,688.80 after a steep slide, and the Nasdaq-100 finished at 28,384.85, down roughly 1,018 points. At its intraday low the Nasdaq-100 had been down even more sharply. The broader Nasdaq Composite lost 747.73 points to 25,437.00, its worst day since June 5.

What Intel told investors

The trigger came after Thursday's close. Intel's third quarter was respectable on the surface: adjusted Earnings of $0.52 a share topped the $0.40 estimate, and Revenue of $16.51 billion was roughly in line. Data Center and AI revenue climbed to $7.3 billion. The problem was the outlook. Intel guided fourth-quarter revenue to $15 billion to $16 billion, against consensus of about $17.1 billion to $17.3 billion, and adjusted earnings of $0.25 a share, well below estimates of around $0.40 to $0.43.

The company also warned of cash burn this year, citing a weak PC market tied to memory prices and availability, Manufacturing hurdles and heavy production spending. Market reports said that an explosion at the Kiryat Gat fab in Israel cut fourth-quarter revenue by about $300 million.

"Despite near-term headwinds across the PC industry, Demand for our CPUs remains robust," CEO Lip-Bu Tan said. On the call, he added: "In recent weeks, our customers began signaling a PC slowdown based on the memory prices and availability." One analyst called the guidance "a perfect storm." BofA downgraded the stock to Neutral and cut its price target to $100 from $145, with an analyst saying the "agentic tide" in data center is "more than offset by PC/supply headwinds."

How the selloff spread

Chip stocks fell almost across the board. Advanced Micro Devices (NASDAQ:AMD) closed at $504.80 after a steep drop with no company-specific news of its own. Nvidia (NASDAQ:NVDA) closed at $204.64 and lost about $185 billion in market value, according to market data. Qualcomm (NASDAQ:QCOM), Broadcom (NASDAQ:AVGO), Micron (NASDAQ:MU), Applied Materials (NASDAQ:AMAT), Lam Research (NASDAQ:LRCX), Arm (NASDAQ:ARM) and ASML (NASDAQ:ASML) all retreated, as did storage names Sandisk (NASDAQ:SNDK), Seagate (NASDAQ:STX) and Western Digital (NASDAQ:WDC). PC makers Dell (NYSE:DELL) and HP slid as well, since Intel said its OEM partners are managing inventory and sees the PC slowdown lasting into 2027.

The selloff fed a broader retreat from AI-linked stocks that had already been shaken by Alphabet (NASDAQ:GOOGL)'s record Thursday decline and Amazon (NASDAQ:AMZN)'s negative trailing free cash flow. Technology was the worst of the 11 S&P 500 sectors, while energy, consumer staples, utilities and health care rose. The S&P 500 fell 140.32 points to 7,580.07, and the Dow lost 572.25 points to 51,770.31.

"The message from investors is becoming clearer: strong AI demand is no longer enough on its own," said a senior market analyst.

What to watch

Next week brings more tests for chip and AI sentiment. Qualcomm reports fiscal fourth-quarter results on November 4, and Super Micro Computer (NASDAQ:SMCI) reports on November 3. Apple (NASDAQ:AAPL) and Palantir (NASDAQ:PLTR) report on Monday, November 2.

Macro events also loom. The midterm elections are Tuesday, November 3, ISM manufacturing data arrives next week, and the October jobs report is due Friday, November 6. Futures markets also point to a likely December rate hike.