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AI-linked stocks slide after tech bosses call for slowdown in ‘reckless’ development

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Cite

Almeida, L. (2026, September 14). AI-linked stocks slide after tech bosses call for slowdown in ‘reckless’ development. The Guardian. https://www.theguardian.com/business/2026/sep/14/ai-linked-stocks-fall-tech-bosses-call-slowdown-anthropic-openai

Dated when The Aporia collected the article, usually within hours of publication. Check the original for its exact date and byline.

The Guardian · collected 2026-09-14 · by Lauren Almeida

Quick Summary

On Monday, stocks linked to artificial intelligence companies declined significantly following calls from tech leaders like Dario Amodei of Anthropic, Sam Altman of OpenAI, and Elon Musk of SpaceX for a slowdown in AI development due to safety concerns. Nvidia shares fell 3.3%, while other major players saw drops ranging from 4% to 13%. President Donald Trump dismissed these concerns as part of a conspiracy against AI and emphasized the role of strong leadership instead.
Written by AI on 2026-09-14, from this article's own text only (the story summary below draws on all the coverage).

AI analysis

Story summary

AI-related stocks declined globally on Monday, following warnings from leading AI executives about the need for a slowdown in development to address safety concerns. This selloff was particularly evident among tech giants like Nvidia, which saw its shares fall by over 3%, and other chipmakers such as Micron Technology, down more than 5%. The broader Nasdaq Composite index dropped by 0.6% while the S&P 500 fell 0.5%.

The sell-off was exacerbated by Donald Trump's dismissive comments on social media, where he labeled calls for regulation of AI a "sick conspiracy" and suggested that only a strong leader could prevent misuse, implying his own leadership as sufficient guard against potential risks.

Meanwhile, the Australian sharemarket futures pointed to a 0.2% slide at the open, mirroring global trends. Despite these challenges, some non-AI-focused stocks showed resilience, such as Intuit, which gained 5.5%.

Written for “AI Development Slowdown Concerns” on 2026-10-30, grounded in this article and the 11 other(s) covering the same event.

Story

📰 AI Development Slowdown Concerns
Technology · 12 article(s) covering the same event. Compare every outlet's account →

Compared with similar articles

This article reads unscored and hedges 31% of its claims. Each row says how that neighbour differs.
NBC News
Hedges 2 of 55 claims Outlet record 60/100
Times of India
Hedges 2 of 15 claims Outlet record 59/100
Toronto Star
Hedges 4 of 28 claims Outlet record 64/100
Evening Standard
⚖️ Leans left Hedges 5 of 10 claims Outlet record 65/100
Los Angeles Times
Hedges 5 of 38 claims Outlet record 95/100
Semafor
Hedges 0 of 5 claims Outlet record 60/100
“The articles describe different events involving distinct sets of individuals and organizations discussing AI safety from separate angles.”
BBC News
Hedges 10 of 39 claims Outlet record 69/100
“The articles cover different perspectives on AI safety concerns: one focuses on a researcher's resignation and fears about AI, while the other discusses Trump's dismissal of calls for increased controls on AI.”
September 13, 2026 Different event
Letters from an American
⚖️ Leans left Hedges 10 of 65 claims
“Article A describes Dario Amodei's essay published on September 12, while Article B reports on Donald Trump's reaction to calls for increased AI regulation and mentions Amodei's appeal but does not focus on the same specific event.”
CBC News
Hedges 4 of 34 claims Outlet record 60/100
How this article was measured signals, leaning charts, publisher record, byline, topics and claims

Signals How these are calculated →

Claims extracted
32
sentences that state something as happening or true
Uncertain
31%
10 of 32 hedged ("reportedly", "may", "according to")
Leaning
withheld
no quote in the article backed the model's score
Publisher signals
66/100
The Guardian's corrections and hedging, across everything collected from it. Not a measure of accuracy.
Outlets on this story
12
Technology
Same framing elsewhere
1
articles that frame the event the way this one does
Analyzed 2026-09-14 · source text last changed 2026-09-14 · how these are computed

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Publisher

The Guardian · 2676 article(s) · 6 correction(s) detected
Running correction rate · 6 correction(s)

Who wrote this

Lauren Almeida
15 article(s) here · 1 carrying a prediction
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Also by Lauren Almeida
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 15 articles by Lauren Almeida →

Topics

Anthropic New York City Nvidia OpenAI SpaceX

Subjects

Anthropic ORG · 5× OpenAI ORG · 4× Amodei PERSON · 3× China GPE · 2× Nvidia ORG · 2× SpaceX ORG · 2× Trump PERSON · 2× AMD ORG · 1× Advanced Micro Devices ORG · 1× New York City GPE · 1×

Narrative

In a social media post on Monday, the president wrote: “The only control or ‘guardrails’ that AI needs is a STRONG AND SMART (High IQ!) PRESIDENT, and the USA has that, in spades!” The president added that his administration had “stopped AI ‘people’ from doing bad, or potentially bad, ‘things,’ like Dario (Anthropic!)”.
framing: mixed · carried by 1 article(s) · first seen 2026-09-14
🔮 AI-linked stocks tumbled on Monday after the bosses of Anthropic, OpenAI and SpaceX called for a slowdown in AI “reckless” development, citing fears the technology could soon run out of control.

Claims (32 extracted, 10 hedged)

AI-linked stocks tumbled on Monday after the bosses of Anthropic, OpenAI and SpaceX called for a slowdown in AI “reckless” development, citing fears the technology could soon run out of control. uncertain
technology → link → control
Shares in the semiconductor designer Nvidia – the world’s most valuable company – were down 3.3% by market closing in New York City, while Advanced Micro Devices (AMD) slid 4% and Micron Technology and Sandisk shares slumped by 5%. asserted
shares → slide → %
The sell-off came after the chief executive of Anthropic, Dario Amodei, appealed at the weekend for the AI industry to “slow down”. asserted
industry → come → weekend
However, Donald Trump dismissed calls to increase controls on AI as a “sick conspiracy”. asserted
Trump → dismiss → conspiracy
In a social media post on Monday, the president wrote: “The only control or ‘guardrails’ that AI needs is a STRONG AND SMART (High IQ!) PRESIDENT, and the USA has that, in spades!” The president added that his administration had “stopped AI ‘people’ from doing bad, or potentially bad, ‘things,’ like Dario (Anthropic!)”. asserted
administration → write → Dario
“There is a SICK conspiracy going on against AI and Data Centers, and the only one that is happy about it is China. asserted
that → be → it
WHOEVER WINS AI, WINS!”, he wrote. asserted
he → win → AI
Trump offered a similar assessment when he called Nvidia chief, Jensen Huang, while the executive was on stage at an AI conference in California on Monday. asserted
executive → offer → Monday
“It’s a hoax,” Trump said via speaker phone to the audience. asserted
Trump → ’ → audience
“The robots are not going to be taking over the world. asserted
robots → go → world
That’s not going to happen.” asserted
That → go → ?
The UN security council, meanwhile, is planning to hold a meeting on AI next week as international concern rises, Agence France-Presse reported on Monday. asserted
Presse → plan → Monday
Shares in SoftBank, a Japanese investor that is a big backer of OpenAI, slumped 13%, while the South Korean Kospi stock index, which relies heavily on chipmakers that supply AI companies, dropped by 3%. asserted
that → slump → %
Shares in the big global microchip supplier Taiwan Semiconductor Manufacturing Company dropped 1.2%. asserted
Shares → drop → supplier
In Europe, shares in the Dutch tech manufacturer ASML, Europe’s biggest company by value and an important supplier for the semiconductor industry, slumped by 6%. asserted
shares → slump → %
There was, however, a rally in shares that have been threatened by the rise of AI, including the advertising group WPP, which rose by 5% in London, and the analytics business Relx, which was also up 5%. asserted
which → be → London
The latter had suffered a sharp fall earlier this year after Anthropic launched a suite of new data and automation tools. asserted
Anthropic → suffer → tools
Amodei has said that “building too fast is reckless”, warning that a swarm of AI agents could cause hundreds of billions of dollars of damage by “taking over the entire internet” in future. uncertain
swarm → say → future
His claims have been disputed by some experts, but on Monday investors began to price in a slowdown that would make it harder for the industry to pay for hundreds of billions of dollar in investments in AI infrastructure. uncertain
industry → dispute → infrastructure
The OpenAI CEO, Sam Altman, the Google DeepMind chief, Demis Hassabis, and SpaceX boss, Elon Musk, all posted support for Amodei’s essay on slowing AI development, titled “We Must Pace the Frontier”. asserted
We → post → Frontier
Altman added that he would match Amodei’s commitment to embedding outside evaluators within his company to verify safety practices. And Jack Clark, an Anthropic co-founder, told the BBC an AI “kill switch” that could be triggered by a third party may be necessary to prevent catastrophe. uncertain
that → add → catastrophe
Fears continue to grow over the rapid pace and lack of regulation in AI development. asserted
Fears → continue → development
On Monday, a cross-party group of UK MPs and peers identified a series of human rights risks posed by AI, arguing that no country in the world had laws sufficient to contain them. asserted
country → identify → them
Meanwhile, China’s top intelligence official warned that the use of AI by adversaries could pose a risk to the country’s political and social security. uncertain
use → warn → security
Chen Yixin wrote in a government outlet on Sunday that advanced US models such as Anthropic’s Mythos and OpenAI’s GPT-5.5-Cyber could pose serious risks to Beijing’s critical information infrastructure, and called for a comprehensive strengthening of AI security. Despite such concern about the risks around AI, Jim Reid, of Deutsche Bank, said intense competition in the sector meant it was unlikely AI companies would stop investing so heavily in their technology. uncertain
companies → write → technology
“The competitive race between companies and countries remains intense, and it’s difficult to imagine firms voluntarily stepping back while rivals continue to push ahead.” he said. asserted
he → remain → companies
“It is hard to see China standing still. asserted
China → see → ?
“If leading executives are openly discussing the risks of increasingly powerful systems, it could be them trying to get across how transformative they believe the technology may become and help advertise the power of their product. uncertain
technology → lead → product
“Rather than signalling less spending, it could simply be that a greater share of AI investment is directed towards safety, monitoring and governance alongside the continued build-out of compute infrastructure.” uncertain
share → signal → infrastructure
Amodei’s warning came before reports emerged that Anthropic is on track to be profitable this quarter. asserted
Anthropic → come → track
The company told investors that its adjusted operating income would be positive for a second quarter in a row, according to the Financial Times, in a big milestone as it prepares to list on the US stock market this year. uncertain
it → tell → market
OpenAI has also suggested it will also join the stock market, although Altman said over the weekend that the company would not go public in 2026 owing to safety concerns with the technology. uncertain
company → suggest → technology
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