Key Highlights

● Broadcom fell sharply on Friday, October 30, 2026, with no company-specific news.

● Intel's weak fourth-quarter guidance triggered the semiconductor selloff.

● The Philadelphia Semiconductor index closed at 10,688.80.

● Nvidia lost about $185 billion in market value.

Broadcom (NASDAQ:AVGO) fell sharply on Friday, October 30, 2026, as the selloff in semiconductors and AI infrastructure swept through the sector. The Palo Alto, California-based maker of networking chips, custom AI accelerators and infrastructure software moved with its peers. There was no Broadcom-specific news. Reports differed on the size of the decline, but every account had the stock solidly lower.

The trigger came from Intel (NASDAQ:INTC). After Thursday's close, Intel issued fourth-quarter Revenue guidance of $15 billion to $16 billion, short of consensus near $17.3 billion, and warned it would burn cash this year because of a weak PC market, Manufacturing hurdles and heavy production spending. Intel shares suffered what market reports called their steepest one-day drop on record.

The chip rout

Broadcom had a lot of company. The Philadelphia Semiconductor Index closed at 10,688.80 after a steep fall. Advanced Micro Devices (NASDAQ:AMD) tumbled to close at $504.80, Qualcomm (NASDAQ:QCOM) and Marvell Technology (NASDAQ:MRVL) fell sharply, and Nvidia (NASDAQ:NVDA) closed at $204.64, losing about $185 billion in market value, according to market data. Micron (NASDAQ:MU), Applied Materials (NASDAQ:AMAT), Lam Research (NASDAQ:LRCX) and Taiwan Semiconductor (NYSE:TSM) all fell with the sector.

Intel CEO Lip-Bu Tan said on the earnings call: "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."

For Broadcom, whose Business leans on data-center networking and custom chips rather than PCs, the selling reflected a broader shift in sentiment toward AI hardware. Investors also weighed Amazon (NASDAQ:AMZN)'s results, which showed trailing 12-month free Cash Flow of negative $42.4 billion as the company spends heavily on AI infrastructure. Amazon held its 2026 Capital spending at about $220 billion and signaled another increase next year.

Doubts about the spending cycle

The question hanging over chip stocks is less whether AI Demand exists than whether the biggest buyers can keep paying for it. "Together, Amazon, Google, Microsoft (NASDAQ:MSFT) and Meta (NASDAQ:META) spent more than $200bn in the third quarter alone," a market analyst said. She added that "the risk is that higher financing costs will absorb more of the cash generated," a point that resonated on a day of cash-flow worries.

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

Market damage

The broader market 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 worst performer in the S&P 500, while energy, staples, utilities and health care rose.

A senior market strategist said the tech decline "does not appear abnormal" compared with earlier bull-market pullbacks.

What to watch

Broadcom investors will watch how the largest cloud companies describe their spending plans in coming weeks, because those budgets drive demand for custom chips and networking gear. Apple (NASDAQ:AAPL) and Palantir (NASDAQ:PLTR) report Monday, November 2, and Qualcomm reports Wednesday, November 4.

The macro calendar matters too. The midterm elections are Tuesday, November 3, and the October jobs report is due Friday, November 6. With markets pricing in a December Fed rate hike, readings on growth and Inflation will feed into how investors weigh high-growth chip stocks.