Moonshot AI Launches Kimi K3 Model, Triggers U.S. Stock Selloff of Over 1% on July 16-17

According to Guru Club, Moonshot AI launched Kimi K3, its largest open-source model, on July 16. The model topped Code Arena benchmarks, surpassing Claude Fable 5 and GPT-5.6.

On July 17, U.S. stock indices fell sharply, with Nasdaq and S&P 500 each declining over 1%. Major U.S. media outlets attributed the selloff to K3's release, citing market concerns about its competitive impact on the global AI landscape and technology valuations. Separately, Moonshot AI has notified investors of structural adjustments and IPO preparations for a potential Hong Kong listing within six months.