Sunday, 20 September 2026

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AI sector stocks fall by up to 10% due to warnings

AI company stocks drop by up to 10% following safety warnings. SoftBank and major semiconductor firms suffer significant losses.

Álvaro Sáez Ferrer
Álvaro Sáez Ferrer
· 2 min read

Stocks in companies linked to artificial intelligence are experiencing drops of up to 10% following warnings from industry leaders about the need to halt their development. This situation arises in a context of rising financing costs.

Companies in the artificial intelligence sector are facing stock declines of up to 10% at the start of the week, driven by warnings regarding the safety of advanced AI models. According to expansion.com, investor sentiment has been affected by a recent call from industry leaders to stop the development of AI technologies, arguing that their advancement could pose a serious threat.

Shares of SoftBank, one of the largest shareholders in AI companies, have fallen by more than 10% on the Tokyo Stock Exchange, reflecting market concerns. South Korean semiconductor firms, SK Hynix and Samsung Electronics, have also seen declines of 6% and 4%, respectively, impacting the Kospi index.

The Nasdaq in the United States, where many of these tech companies are listed, could experience declines of 1.5%, with even higher figures in key companies like Nvidia and Intel. These drops occur in a context where financing costs have risen, reaching an almost critical interest rate of 5% on ten-year U.S. debt, which could cool investments in AI.

The CEO of OpenAI, Sam Altman, has indicated that 2026 is not a good time to go public, prioritising instead the resolution of the security challenges facing artificial intelligence. In the same vein, Dario Amodei from Anthropic has urged the industry to implement additional safety measures.

Álvaro Sáez Ferrer

Written by

Álvaro Sáez Ferrer

Redactor

Economista por ICADE y una de las pocas personas que disfruta leyendo la ley de presupuestos. Cafetero, padre a tiempo completo y azote de la letra pequeña; en Iber Empresa escribe de economía y fiscalidad.