Z.AI raises $5 billion in Hong Kong share placement and zero-coupon bond sale
The Beijing-based artificial intelligence firm secured $2 billion from new shares and $3 billion from zero-interest convertible bonds to fund domestic computing infrastructure and next-generation model training.
Structure of the five billion dollar offering
Beijing-based artificial intelligence firm Z.AI raised $5 billion across two concurrent transactions in Hong Kong, according to a stock exchange filing published on Sunday, 13 September 2026. The company launched the sale on Friday, 11 September 2026, offering 21.97 million new shares at HK$714 ($91.05) each to generate approximately $2 billion. That placement price represented a 10% discount relative to Friday's closing price of HK$793. Alongside the equity placement, Z.AI issued 20.14 billion yuan ($3 billion) of zero-coupon convertible bonds maturing in September 2027 at 100.5% of face value. Investors accepted a negative yield between minus 0.5% and zero, buying the debt to secure the right to convert into equity at HK$892.50 per share, a 25% premium over the share placement price. Z.AI retained the right to redeem all outstanding bonds starting 18 February 2027 if its shares trade at or above 130% of the conversion price across 20 out of 30 consecutive trading days.
- Convertible bonds
- 3 $B
- Share placement
- 2 $B
Allocation of proceeds and compute constraints
According to the regulatory filing, Z.AI earmarked about 60% of the net proceeds for research and development of next-generation models and a fully self-training system. Another 15% of the proceeds will finance expansion plans, with the remaining capital allocated to optimize capital structure, replenish working capital for daily operations, and fund general corporate purposes. The capital influx addresses the substantial expenses required for compute infrastructure and technical personnel. Z.AI has previously constructed a data centre without Nvidia hardware, relying instead on domestic Chinese accelerators, an approach where scaling requires heavy capital deployment. The company did not state how much of the $5 billion total will be dedicated directly to compute infrastructure or specify which hardware components it intends to buy.
Capital trajectory and commercial operations
The dual offering marks the third time Z.AI tapped public equity markets during 2026, returning to the market immediately following the expiration of its prior lockup agreement. The company, formerly known as Zhipu AI and listed under ticker 2513.HK, staged its initial public offering in Hong Kong in January 2026 before raising about $4 billion in a follow-on share sale in July 2026. By June 2026, the company's stock had appreciated by roughly 2,000% from its initial listing price. Annual sales are approaching $1 billion even as the firm distributes its strongest models under open weights, including the GLM line that surpassed DeepSeek earlier in 2026.
- Z.AI completes initial public offering on the Hong Kong stock exchange
- Company raises about $4 billion in a follow-on share sale
- Z.AI launches $5 billion stock placement and convertible bond offering
- Earliest date Z.AI can redeem convertible bonds if price conditions are met
- Maturity date for the 20.14 billion yuan zero-coupon convertible bonds
Scrutiny from United States security agencies
The fundraising was finalized two days after three United States security agencies published a joint advisory naming Z.AI among six Chinese enterprises engaged in large-scale model distillation. The document, released by the National Security Agency (NSA), Federal Bureau of Investigation (FBI), and Cybersecurity and Infrastructure Security Agency (CISA), accused the company of extracting operational capabilities from American foundation models. Specifically, the advisory alleged that Z.AI systematically gathered billions of tokens from OpenAI's GPT-5.5 and Anthropic's Claude Opus to accelerate its own model development.
