Cybersecurity shares rose 10% to 15% while semiconductor stocks fell about 5% on Sept. 14, as calls by Anthropic and OpenAI to slow AI development raised concerns about demand for computing infrastructure. The rally extended across software, with a median gain of 4.5% among companies tracked by Tomasz Tunguz. Of the 87 stocks in his index, 80 advanced and 12 gained at least 10%.
Nvidia fell 2.8% and Oracle declined 4.3%. Earlier, SoftBank closed down 11% in Japan, and its US depositary receipts dropped 12.5% before the US market opened. CoreWeave fell 9% in premarket trading, while Nasdaq futures lost 1.6%. The infrastructure selloff reflected concerns that slower development of advanced models could reduce demand for GPUs, memory, networking and data centers.
Anthropic CEO Dario Amodei urged slower capability improvements over the weekend so safety work could keep up, winning support from OpenAI CEO Sam Altman and Elon Musk. Anthropic and OpenAI committed to giving independent evaluators access comparable to employees to assess their systems. Amodei said the proposal did not mean halting training or technical progress. Asked on CBS whether Anthropic would stop releasing more adv
Key sources
- SOURCE@edludlow“Softbank closed down 11% in Japan, ADRs down 12.5% in pre.”x.com
- SUPPORT@stocksavvyshay“Dario Amodei’s gloomy AI essay is hitting the AI trade across the board pre market: • $AEHR -9% • $NBIS -8%”x.com
- SUPPORT@rohanpaul_ai“Investors are translating that safety discipline into a spending question because slower frontier training can reduce near-term demand for GPUs, memory, networking, and data centers.”x.com
- SUPPORT@ttunguz“While mega-cap infrastructure digested capex today (ORCL -4.3%, NVDA -2.8%), software surged : • Median SaaS stock up +4.5% (avg +5.2%) • 12 companies gained >= 10% in a single day • 92% of the index closed green (80 of 87)”x.com
- SUPPORT@deedydas“Today, cybersecurity stocks are swinging at +10-15% while Semiconductor stocks are down -5%.”x.com
- SOURCE@theo“Can't believe that Dario, Elon, Sam and I all agree on this.”x.com
- SOURCE@rohanpaul_ai“For example, at OpenAI we now formulate explicit safety cases in advance of frontier reinforcement learning runs we expect to significantly increase capability, in addition to the safety work we have long done in advance of model releases.”x.com
- SUPPORT@polymarket“Microsoft CEO Satya Nadella calls for “deliberate pacing” of advanced AI to keep it aligned & under human control.”x.com