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Global chip selloff wipes out over $1 trillion as custom AI silicon challenges Nvidia

Global chip selloff wipes out over $1 trillion as custom AI silicon challenges Nvidia

Money Moves

Big AI buyers are designing their own chips, and the market is repricing a year of optimism about Nvidia's near-monopoly.

July 28th, 2026: Global chip selloff erases over $1 trillion

Overview

Updated Jul 28

Chip stocks lost more than $1 trillion in market value on July 28, 2026. Memory maker SK Hynix fell about 14% and Samsung dropped over 10%, pulling South Korea's Kospi down roughly 9%. Nvidia slid more than 5% and briefly handed the title of world's most valuable company back to Apple.

The trigger is a change in who designs AI chips. OpenAI, Amazon, and Cerebras are now shipping their own custom silicon instead of buying every chip from Nvidia. Investors read that as the start of a lasting shift, and repriced about a year of AI-hardware optimism in a single session.

Why it matters

If custom chips keep displacing Nvidia, cloud giants' AI bills fall, and so do the chip stocks sitting in most retirement funds.

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Key Indicators

$1T+
Market value erased
Combined loss across global chip stocks on July 28, 2026.
-14%
SK Hynix single-day drop
The Nvidia memory supplier led Asia's losses.
-9%
Kospi index drop
South Korea's benchmark fell as Samsung and SK Hynix sank.
-5%
Nvidia single-day drop
Enough to briefly cede most-valuable-company status to Apple.
10 GW
OpenAI–Broadcom chip plan
Custom accelerators OpenAI plans to deploy through 2029, bypassing Nvidia.

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People Involved

Jensen Huang
Jensen Huang
Co-founder and chief executive, Nvidia
Defending Nvidia's lead as big customers build rival chips
 Sam Altman
Sam Altman
Chief executive, OpenAI
Diversifying OpenAI's chip supply away from Nvidia alone
 Andrew Feldman
Andrew Feldman
Co-founder and chief executive, Cerebras
Positioning wafer-scale chips as a GPU alternative for inference

Organizations Involved

Nvidia Corporation
Nvidia Corporation
Semiconductor and AI computing company
Dominant AI chip supplier now facing in-house rivals

Nvidia's graphics processors are the default hardware for building and running AI models.
Amazon Web Services (AWS)
Amazon Web Services (AWS)
Cloud computing provider (Amazon subsidiary)
Shipping custom Trainium chips in volume

Amazon's cloud arm designs its own Trainium AI chips to cut its reliance on Nvidia.
SK Hynix
SK Hynix
Semiconductor manufacturer
Hardest-hit stock in the July 28 selloff

SK Hynix makes the high-bandwidth memory that sits alongside AI processors.

Timeline

January 2026 July 2026

6 events Latest: July 28th, 2026 · 2 months ago
Tap a bar to jump to that date

  1. Global chip selloff erases over $1 trillion

    Latest Market

    SK Hynix drops about 14% and Samsung over 10%; Nvidia falls 5% and briefly loses the top-company title to Apple.

  2. Cerebras says its new chip will fight GPUs

    Statement

    Cerebras announces a chip built to compete directly with GPU architectures, sharpening the challenge to Nvidia.

  3. First tremor hits Asian chip stocks

    Market

    Samsung and SK Hynix fall over 9% as a Wall Street chip selloff spreads to Asia, an early sign of nerves.

  4. OpenAI unveils Jalapeño chip with Broadcom

    Product

    OpenAI reveals its first custom inference chip, designed with Broadcom, with initial deployment targeted for late 2026.

  5. Amazon Trainium3 ships in volume

    Product

    AWS begins volume shipments of its custom Trainium3 chip, offered as a lower-cost alternative to Nvidia hardware.

  6. OpenAI adds Cerebras to its chip roster

    Deal

    OpenAI signs a chip agreement with Cerebras, widening its supply beyond Nvidia, AMD, and Broadcom.

Scenarios

1

Nvidia's earnings show data-center growth still climbing

Possible Resolves by Dec 1, 2026

Discussed by: Nvidia management; sell-side analysts at Morgan Stanley and Bank of America

Nvidia's next quarterly report shows data-center revenue still rising, easing fears that custom chips are eating its sales. Buyers keep ordering Nvidia hardware for training even while building their own chips for narrower tasks. If that holds, the selloff looks like an overreaction, and chip stocks recover much of what they lost.

2

Nvidia reclaims most-valuable-company title within months

Possible Resolves by Oct 31, 2026

Discussed by: Market commentators tracking Nvidia and Apple market caps

The July drop proves short-lived and Nvidia's stock recovers, pushing its market value back above Apple's. This happens if buyers signal continued heavy Nvidia orders and the custom-chip threat is seen as years away from scale. A bounce here would frame the selloff as a sentiment swing, not a turning point in demand.

3

Nvidia keeps over 80% of AI accelerator share through 2026

Likely Resolves by Q1 2027

Discussed by: Research firms TrendForce and IDC

Custom chips grow but stay a minority of AI compute. Nvidia holds the large majority of the accelerator market for 2026 because its systems and software remain hard to match at scale. Under this outcome, custom silicon is a real but slow-moving pressure, and the selloff overstated how fast share will move.

4

A major cloud buyer cuts planned Nvidia orders for its own chips

Uncertain Resolves by Q2 2027

Discussed by: Reuters and Bloomberg technology desks; hyperscaler earnings calls

One of the large AI buyers publicly shifts a meaningful share of planned spending from Nvidia to its own or a partner's custom chips. A confirmed cut would validate the selloff's core fear: that Nvidia's best customers are becoming its competitors. This is the outcome bears point to as proof the shift is durable.

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

March 2000

Cisco loses its dot-com crown (2000)

In March 2000, Cisco passed Microsoft to become the world's most valuable company at about $500 billion. It made the routers and switches that built the early internet, the picks-and-shovels of that boom. Then demand assumptions broke.

Then

Cisco shares fell roughly 88% over the next two years, from about $79 to $9.50.

Now

The stock did not pass its 2000 peak again until late 2025, even as the company stayed profitable and large.

Why this matters now

Like Nvidia, Cisco was the dominant supplier priced for endless growth. The parallel shows how fast a hardware leader reprices when buyers' spending plans shift.

June 2020

Apple drops Intel for its own chips (2020)

Apple announced it would stop buying Intel processors for Macs and use chips it designed itself, built by TSMC. A major customer chose to build rather than buy. The first Apple-designed Macs shipped later that year.

Then

Apple's chips beat Intel's on speed and battery life, and Apple stopped being an Intel customer for Macs.

Now

Intel lost the Mac business permanently and spent years trying to regain lost ground in chip performance.

Why this matters now

This is the exact mechanism now hitting Nvidia: a big buyer designs its own silicon and stops writing checks to the incumbent. It shows the threat can be real and lasting.

January 2025

The DeepSeek selloff (January 2025)

A cheaper AI model from Chinese startup DeepSeek raised fears that companies could build strong AI with far less chip spending. Nvidia fell about 17% in one session, near $600 billion, the largest single-day loss for any company at the time.

Then

Nvidia's stock recovered much of the drop within weeks as buyers kept ordering chips.

Now

The episode showed how sensitive Nvidia's value is to any hint that AI hardware demand could soften.

Why this matters now

The July 2026 selloff rhymes with this: a demand-side worry, not a bad Nvidia result, wiping out huge value fast. It also shows such drops can reverse quickly.

Sources

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