Chinese AI startup Moonshot’s Kimi K3 triggers global chip stock selloff

The release of Moonshot AI's Kimi K3 model on July 16 sent shockwaves through global semiconductor markets on Thursday, as investors drew immediate parallels to last year's DeepSeek moment and questioned whether cheaper Chinese AI models could erode demand for the most advanced chips powering the artificial intelligence boom.

A "Kimi Moment" Rattles Markets

Bloomberg's Asian semiconductor index slid more than 6% as the model's launch reverberated across trading floors, while Nasdaq 100 futures fell 2% on concerns that increasingly capable Chinese models could curb demand for high-end AI chips. The Philadelphia SE Semiconductor Index dropped 4.29% on the day, closing at 11,867.50, pushing the index toward bear-market territory with a 16% decline from its recent closing high.moneycontrol+4

Moonshot's Kimi K3, a 2.8-trillion-parameter mixture-of-experts model with a one-million-token context window, was quickly dubbed a new "Kimi moment" by investors. The company priced its API at $3 per million input tokens and $15 for output — roughly half the cost of OpenAI's Microsoft Corporation ↗ 0.52% GPT-5.6 Sol and under a third of Anthropic's Claude Fable 5. Artificial Analysis ranked K3 ahead of Anthropic's Opus 4.8 on some frontier benchmarks, making it the first Chinese open-weight model to reach that milestone.instagram+1

Chip Stocks Under Siege Despite Strong Earnings

The selloff hit an already fragile market. TSMC Taiwan Semiconductor Manufacturing Company Limited ↘ 1.20% reported a 77% jump in second-quarter profit to a record on Thursday and raised its 2026 capital expenditure budget by $8 billion to $62 billion at the midpoint, yet its U.S.-listed shares still fell 2.1%. The S&P 500 dipped 0.1% and the Nasdaq Composite lost 0.6%, with chip weakness overwhelming otherwise solid earnings reports.global.morningstar+2

The pressure built on top of IBM's International Business Machines Corporation ↗ 0.60% warning earlier in the week that businesses were favoring data-center infrastructure over software. IBM shares plunged 25% on Tuesday — its worst day on record — after forecasting second-quarter revenue below estimates.reuters+1

Echoes of DeepSeek

The market reaction echoed January 2025, when DeepSeek's low-cost AI model triggered a $589 billion single-day loss in Nvidia's ↘ 1.47% market capitalization. As then, the central fear is that cheaper Chinese models could undermine the thesis that hyperscale AI infrastructure spending will sustain chip demand indefinitely. MarketWatch noted semiconductor stocks were "on the verge of a bear market" as of July 16, while the SOX index had already fallen 16% from its June peak before the Kimi K3 news added fresh downside.reuters+3

Moonshot has pledged to release full model weights by July 27, a move that could intensify competitive pressure if independent evaluations confirm the company's performance claims.benchlm