Chip Stocks Selloff Extends as Qualcomm and Arm Disappoint: AMD, Sandisk and Micron Plunge Up to 17% While the Nasdaq Falls 6%

Chip stocks selloff deepened on Thursday, 5 November 2026, after Qualcomm's weak forecast and Arm's soft royalty revenue, with AMD down about 17% and the Philadelphia Semiconductor Index down about 12% at the close, per press reports. Worries over possible limits on AI data centres added to the fall, and the Nasdaq 100 fell 6.36%. Figures below come from Reuters-based and Yahoo Finance reports and may differ by source and time. This guide explains the fall and what it could mean for Indian investors. It is not investment advice.

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Chip Stocks Selloff: The Numbers

Stock or index	Move on 5 November	Note
Philadelphia Semiconductor Index	Down about 12.2% at the close	Largest one-day fall since 16 March 2020; Reuters showed about 9.75% intraday
AMD	Down about 17.3%	Among the largest falls
Micron	Down about 17.5%	Also paused a Taiwan plant plan
Sandisk	Down about 22%	After a 7% fall the day before
Nvidia	Down about 9.3%	About USD 447 billion of market value lost
Broadcom	Down about 10.4%
Qualcomm	Down about 9.5%	Forecast missed expectations
Arm Holdings	Down about 13%	Revenue guidance was above consensus but not enough

The headline figure of 9.7% for the semiconductor index reflects an intraday reading, while the close was lower at about 12.2%, which is why different reports quote different numbers. Yahoo Finance noted the index still held roughly 25% gains for 2026 after the fall.

Why Did Qualcomm and Arm Trigger the Fall?

Company	What happened
Qualcomm	Gave an underwhelming profit forecast; handset chip revenue missed estimates; higher-cost components weighed, per Yahoo Finance and BigGo
Arm Holdings	Reported revenue and profit above estimates, but royalty revenue of USD 670 million, up 8%, fell short of forecasts
Micron	Paused plans for a Taiwan plant because of labour disputes, per Yahoo Finance
Sandisk and memory peers	Fell sharply as investors sold AI-linked memory names

Arm's case shows how high expectations are. A result above consensus still disappointed buyers who had priced in a bigger beat. That is typical of a crowded trade, where good news is not enough.

The Data-Centre Regulation Worry

Yahoo Finance reported that chip stocks fell even as the broader market rallied the day before, because investors feared stricter regulation could slow data-centre construction. The Mint summary also refers to worries about potential restrictions on AI data centres. Data-centre spending drives demand for AI processors and memory, so any hint of limits reaches chip makers first. I could not confirm details of any proposed rules, so read the original reports before drawing a conclusion.

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What It Means for Indian Investors

Channel	Likely effect
Opening	Gift Nifty pointed to a weak start on 6 November
Direct exposure	India has few listed chip makers, so the direct effect is small
IT stocks	Nifty IT rose 2.4% on 5 November, and Reuters noted IT often moves opposite to chip stocks
Foreign flows	Foreign investors bought about Rs 14,975 crore of Indian shares on 5 November
Asia	Kospi and Nikkei fell sharply on 6 November on the same worries

The Nifty 50 and Sensex rose about 2.4% on 5 November, before the US fall. Whether Indian stocks hold depends on whether the selloff extends. Our separate articles cover the wider AI bubble debate and the Kospi crash.

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What to Watch Next

Watch item	Reason
US index futures	They show whether the fall is extending
Nvidia results and guidance	It is the bellwether for AI spending
Data-centre rules	Any formal restriction would hit AI hardware
Memory prices	They drive Micron, Sandisk and SK Hynix
Foreign flows into India	They can change quickly in a global risk-off phase

Conclusion

The chip stocks selloff was triggered by Qualcomm and Arm but deepened on worries over AI data-centre limits. For Indian investors the effect is mostly indirect, so watch Gift Nifty, foreign flows and Wall Street before reacting.

Frequently Asked Questions on the Chip Stocks Selloff

What caused the chip stocks selloff on 5 November 2026?

Ans. Press reports point to Qualcomm's weak forecast, Arm's royalty revenue falling short, Micron pausing a Taiwan plant and worries that stricter rules could slow AI data-centre construction. The selloff extended a fall from the previous session.

How much did the semiconductor index fall?

Ans. The Philadelphia Semiconductor Index fell about 12.2% at the close, its largest one-day fall since March 2020. Reuters showed about 9.75% intraday, which is why the headline figure differs.

Which chip stocks fell the most?

Ans. Sandisk fell about 22%, Micron about 17.5% and AMD about 17.3%, per press reports. Nvidia fell about 9.3%, Broadcom about 10.4%, Qualcomm about 9.5% and Arm about 13%. Intraday and closing figures differ.

Why did Arm fall after beating estimates?

Ans. Arm's revenue and profit were above estimates, but royalty revenue of USD 670 million, up 8%, fell short of forecasts. Investors had priced in a bigger beat after the AI rally.

Will the chip selloff hit Indian stocks?

Ans. It can weigh on the opening. India has little direct exposure, and IT stocks rose 2.4% on 5 November. The effect depends on whether US selling extends and whether foreign investors keep buying.

Are Indian IT stocks affected by chip stocks?

Ans. The link is loose. Reuters noted Indian IT stocks often move opposite to chip stocks. A long slowdown in US technology spending could affect demand, but that is a risk and not a forecast.

Is this the end of the AI rally?

Ans. No one can say from one session. The index still held about 25% gains for 2026 per Yahoo Finance. Earnings, guidance and data-centre rules will show whether the trend changes.

Should I sell technology stocks now?

Ans. Univest cannot give personal advice. Selling after a sharp fall can lock in losses, while holding carries risk. Review your allocation, time horizon and risk tolerance, and consult a SEBI-registered adviser.