Markets JUL 20, 2026

Moonshot's Kimi K3 triggers $20% chip-index rout, wipes weeks off SOXX

The iShares Semiconductor ETF has fallen 20% since its June 22 record after China's Moonshot unveiled a frontier open model, with Intel down 33% and Micron 30% off recent highs.

BY HENLEY MARRAST · MARKETS DESK

The iShares Semiconductor ETF is down 20% from its June 22 record after Moonshot AI’s release of Kimi K3 on Friday reset investor priors about how much compute the frontier actually requires. Intel is off 33% from recent highs, Micron 30%, and Bloomberg’s Asian semiconductor index slid more than 6% in a single session. Nasdaq 100 futures dropped 2% on the Kimi K3 headlines alone.

The pattern rhymes with January’s DeepSeek R1 episode, which wiped roughly $600 billion off Nvidia in a day. What’s different this time is that the drawdown isn’t a one-session shock but a grinding three-week repricing. The VanEck Semiconductor ETF fell more than 4% intraday Friday and has dropped almost 9% over three of the past four weeks, with the semi sector off more than 17% for July. Applied Materials, Lam Research, Intel, KLA, and Arm each fell about 4% Friday. Micron and Nvidia lost more than 2%.

“Moves of the type we’re seeing in semiconductors are incredibly rare,” said Steve Sosnick, chief strategist at Interactive Brokers, who called the prior run “parabolic.” The framing matters. SOXX is still up 66% year-to-date, Micron 169%, Intel 141%. This isn’t collapse; it’s the market questioning whether a US-listed compute cartel deserves the multiple it earned when frontier models seemed to require American silicon.

Chinese AI names took it worse. Z.ai lost as much as 30% in Hong Kong Friday, its worst session since its January listing. MiniMax fell as much as 16%. Alibaba dropped 4%. The read: markets aren’t punishing China for building good models, they’re punishing anyone whose valuation assumed the OpenAI-Anthropic capex arms race would go unchallenged.

Not everyone in the stack loses symmetrically. “Memory makers should still be in the best position among semiconductor names, given the limited number of suppliers,” said Stanley Tang, senior portfolio manager at Sumitomo Mitsui DS Asset Management, a view Bloomberg analysts have echoed by arguing Kimi K3 may be more about memory than compute. South Korea’s Kospi, nearly half Samsung and SK Hynix, fell 4.5% Monday anyway.

Monday brought a partial bid back. The S&P 500 rose 0.3%, Nvidia recovered 1.4%. That followed Friday’s close of 7,457.69, down 1.01%, and a Nasdaq Composite finish of 25,520.24, off 1.4%. Alphabet reports Wednesday, Intel Thursday. The narrative is now downstream of what those calls say about capex.

Sources

About the author

Henley Marrast

MARKETS DESK

Henley Marrast covers AI-equity flow, accelerator demand, and earnings prints for AI Sheet Report. She leads coverage of the public AI complex from the New York markets desk, with a focus on the daily tape and quarterly results. She has been writing about technology markets for several years.