Market Thinks Cadence's (CDNS) Moat Is at Risk Due To Kimi K3. We Think it's Not, Here's Why

Cadence Design Systems’ stock fell more than 10% on July 17 after investors reacted to a new open-weight AI model called Kimi K3 from China’s Moonshot. The model, with 2.8 trillion parameters, was described in a blog post as having designed and verified a working nano-chip in 48 hours using free open-source design tools, a claim that the article says immediately pressured Cadence shares. Cadence sells semiconductor design software, and its pricing power depends on the complexity of chip design and the need for certified workflows. The article argues the selloff misunderstood the result because K3’s example involved a 45nm chip—technology from around 2008—and open-source tools have existed for decades, while major firms including Nvidia, Apple and TSMC still use Cadence. It says the main risk is China’s shift toward building alternatives after Washington restricted chip-design software, culminating in a full ban last summer. Cadence trades at 41.4x forward P/E for FY 2026E. Short interest is 2.2% and 66 hedge funds held the stock at end of Q1.