US investors are still waiting for pure-play AI model companies to hit the stock markets, but Chinese companies are already being traded on their markets — and producing some impressive results.

Knowledge Atlas Technology — the Beijing-based lab that trades on the Hong Kong Stock Exchange as Z.AI (HKG: 2513) — has seen its stock go from HK$1,134 on June 12 to HK$2,094 as of June 18, an 84.66% gain in five days. The move coincides almost exactly with the release of GLM 5.2, the company’s latest model, which dropped on June 13.

The reception to GLM 5.2 was hard to ignore. Vercel CEO Guillermo Rauch called it a model that “changes things.” Box CEO Aaron Levie flagged it as evidence of something “pretty remarkable” happening in the open weights space. Jeremy Howard of Answer.AI put it on par with Claude Opus 4.8 and GPT 5.5. On the Artificial Analysis Intelligence Index, GLM 5.2 scored 51, placing it fourth globally behind only Claude Fable 5, Claude Opus 4.8, and GPT-5.5 — and first among open models by a wide margin.

That’s the kind of reception that moves markets, and it did.

The stock’s five-day run is impressive on its own, but it makes more sense in the context of what Knowledge Atlas has been doing since its Hong Kong IPO in January 2026. The company priced at HK$116.20 and has now crossed HK$2,094 — nearly 18x its IPO price in roughly six months. The $558 million raised in January has been deployed at pace: GLM-5 launched in February, GLM-5.1 followed in late March, and now GLM-5.2. One significant model release roughly every six weeks.

Each release has carried genuine benchmark weight. GLM-5.1 topped SWE-Bench Pro ahead of GPT-5.4 and Claude Opus 4.6, becoming the first Chinese model to lead that leaderboard. GLM-5.2 extended the run by clearing 62.1 on SWE-bench Pro — ahead of GPT-5.5’s 58.6 — while also becoming the first open-source Chinese model to rank ahead of all Google models on the Artificial Analysis Intelligence Index. All of it built on Huawei Ascend chips, with no Nvidia hardware in the pipeline, despite Knowledge Atlas sitting on the US Entity List since January 2025.

For investors, that hardware story has been almost as compelling as the benchmarks. The export control thesis — that restricting chip access would slow Chinese AI labs — keeps running into GLM releases.

MiniMax, the only other major Chinese AI model company to go public, has followed a similar trajectory and is now worth more than Baidu on the Hong Kong exchange. Between Knowledge Atlas and MiniMax, these are currently the only pure-play AI model companies available on any major global exchange — OpenAI and Anthropic remain private, DeepSeek has no listing. That scarcity shapes how the market prices these stocks, but it doesn’t fully explain a move from HK$1,134 to HK$2,094 in a week.

What explains that is a model that shipped and delivered.