Intel's 30% plunge wipes about $1 trillion off chip stocks in a day
The Philadelphia Semiconductor Index sank 9.14% as Arm, AMD and Qualcomm each lost about 12%, and Nvidia shed roughly $270 billion of market value.
Intel shares fell 30% on Friday, October 30, 2026, erasing nearly $150 billion of market value in the worst single day in the company's history. The panic spread across the sector: intraday estimates from Benzinga, cited by Tom's Hardware, put the total value wiped off semiconductor stocks that day at roughly $1 trillion.
What set it off
The trigger was the outlook Intel attached to its third-quarter results on October 29. Revenue for the quarter came in at $16.5 billion, but Intel guided the fourth quarter to $15 billion to $16 billion and warned that sales in its client computing group, the unit that sells desktop and laptop CPUs, would drop by more than 20%. That group still brings in nearly half of Intel's revenue and most of its cash.
How far the damage spread
By 2:31 p.m. ET the PHLX Semiconductor Index, which tracks 30 major chip companies, was down 1,052.82 points at 10,465.38. Arm (-12.68%), AMD (-12.48%) and Qualcomm (-12.14%) took the next-heaviest hits, followed by Applied Materials, ASML and Lam Research at around 8% each, Micron at 7.28% and Broadcom at 7.1%. Nvidia slipped a comparatively mild 5.66%, yet at its size that equals about $270 billion, more than Intel lost in dollar terms.
The selling reached hardware builders and cloud firms too. Dell dropped 12.67%, with HPE, Supermicro and Oracle each down about 7% to 8%. Reuters pointed to growing investor doubt about how much more money AI infrastructure can absorb. Apple, which designs its own chips and sells finished devices, barely moved at 1.66% down.
Why PC players should pay attention
Strip away the market noise and this is a story about the gaming PC market shrinking. Intel expects client PC demand to fall 10% in 2027 compared with 2026, blaming elevated memory prices and shortages of other components that are pushing up system prices. Client CPU shipments were already down 14% year on year in the third quarter, propped up only by a 9% rise in average selling prices. Component pricing is set globally, so the RAM and SSD squeeze behind Intel's warning reaches every region where gamers buy parts.
What comes next
Intel's market value has now roughly halved from its record $673.43 billion in mid-June to $338.91 billion. The company is leaning on server demand to carry 2027 and has promised more detail on its Nova Lake desktop CPUs at CES in January, the next real test of whether it can win back enthusiasts.
Source: Tom's Hardware; Benzinga; Intel Q3 2026 earnings release.
