Moonshot AI's Kimi K3 model launch leads to a significant decline in semiconductor stocks worldwide, affecting major companies like Nvidia and Z.ai.
The recent release of the Kimi K3 model by Moonshot AI has triggered a significant downturn in semiconductor stocks globally. Launched on July 16, the new model boasts 2.8 trillion parameters, marking it as the largest open model available at launch.
The markets reacted sharply, especially in Asia, with the Taiwanese index dropping over 6% and Japan's market falling 4%. In the United States, the Nasdaq also experienced a decline, falling 1.5%, making it the worst trading session of the week.
Particularly hard hit was Z.ai, a Chinese neural network developer, whose stock plummeted by nearly 30% in Hong Kong. Meanwhile, Nvidia briefly lost its status as the world's most valuable company to Apple in the wake of the sell-off.
This situation has been compared to the "DeepSeek effect" observed after the release of the R1 model in January 2025, which led to a staggering loss of approximately $590 billion in Nvidia's market capitalization in just one session.
Kimi K3 received an impressive score of 57 points in an independent evaluation by the Artificial Analysis Intelligence Index, outperforming competitors such as Claude Opus 4.8 and GPT-5.5. The model, which can handle one million tokens of text and images, will have its full weights available on July 27 under a Modified MIT license, allowing free access to smaller labs.
Wall Street analysts largely expected this reaction. Morgan Stanley characterized K3's release as a natural progression in AI technology, while Bernstein noted the swift advancement of Chinese AI capabilities. Analyst Robin Zhu predicted continued growth in China's market share in the sector.
Despite this, some industry experts believe the market's overreaction may not be justified, arguing that K3's pricing is competitive rather than significantly lower than its US counterparts like GPT-5.6. The broader semiconductor market has been facing declines for weeks amid valuation concerns regarding AI infrastructure companies, with the Philadelphia Semiconductor Index now over 20% below its late June peak, officially entering bear market territory. This decline was only accelerated by the anticipation and subsequent release of Kimi K3.
Additionally, cryptocurrency markets felt the impact, with Bitcoin falling below $64,000.
Moonshot AI, supported by Alibaba's $1 billion investment in 2024, is currently valued at approximately $31.5 billion, up from an earlier valuation of $2.5 billion.
As discussions around AI advancements intensify, around 200 protesters gathered in July to demand a halt to the development of more powerful AI models, further highlighting the growing concerns within the industry.
