# AI stocks tumble as Anthropic CEO Dario Amodei warns of AI risks in 3,800‑word essay

Digest AI · Business & Funding · published 2026-09-14T06:49:00Z

Canonical: https://digestai.news/story/ai-stocks-tumble-as-anthropic-ceo-dario-amodei-warns-of-ai-risks-in-3

## Summary

Pre‑market trading on Monday saw a sharp drop in AI‑related equities after Anthropic chief executive Dario Amodei posted a 3,800‑word essay warning that the pace of AI capability advances must be slowed to give risk‑prevention measures time to keep up. Shares of Marvell, SK Hynix, Micron and Super Micro each fell about 6%, while CoreWeave, SanDisk, Intel and AMD slipped more than 4%.

Even the sector’s biggest names, Nvidia and Broadcom, were not immune, sliding roughly 3% after the opening bell. Amodei’s essay stressed the need for “more prudence” and a slower development tempo. OpenAI CEO Sam Altman echoed the concern in an early‑morning X post, warning of two dangerous paths: loss of control over AI and excessive concentration of power in a single entity or country. Bernstein analyst Madison Rezaei said the framework calls for independent reviewers, safety‑standard coordination and international cooperation.

## Key points

- AI stocks fell sharply in pre‑market after Dario Amodei’s 3,800‑word essay; Marvell, SK Hynix, Micron, Super Micro each down ~6%.
- Nvidia and Broadcom slid about 3% despite being leading AI hardware names.
- Both Amodei and OpenAI CEO Sam Altman called for slowing AI progress and stronger safety coordination.

## Why it matters

The sell‑off shows how quickly investor confidence in the AI sector can erode when top leaders raise safety concerns, potentially tightening funding and slowing development.

## Sources

1. [AI stocks get drilled because of Anthropic CEO Dario Amodei's 3,800-word warning](https://finance.yahoo.com/markets/stocks/article/ai-stocks-get-drilled-because-of-anthropic-ceo-dario-amodeis-3800-word-warning-093637548.html) (finance.yahoo.com, 2026-09-14)

Part of the developing story: [AI Power Play From Broadcom to Trump](https://digestai.news/thread/broadcom-anticipates-strong-sales-growth-to-anthropic) (5 stories)

## Cite

Digest AI, "AI stocks tumble as Anthropic CEO Dario Amodei warns of AI risks in 3,800‑word essay", 14 September 2026, https://digestai.news/story/ai-stocks-tumble-as-anthropic-ceo-dario-amodei-warns-of-ai-risks-in-3

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