Z.ai Plans HK$4 Billion Buyback After 84% Share Slide

Z.ai said on Tuesday it will buy back up to HK$4.0 billion (about US$510 million) of its Hong Kong-listed H shares, after the stock fell 84% from its 52-week high.

The Beijing AI developer filed the announcement with the Hong Kong exchange at 7:05 p.m. local time, after the market closed. The repurchase cannot exceed 1% of issued shares as of the announcement date. It will run on the open market under a general mandate shareholders approved at the June 22 annual general meeting. That mandate lasts until the 2026 annual meeting.

The plan followed a proposal from chairman Liu Debing. The board said the buyback "would demonstrate its confidence in the Group's long-term business outlook and prospects." The filing also cautioned that there is no assurance as to timing, quantity or price of any purchase, or whether the company will buy any shares at all.

Why the share cap binds before the dollar figure

Z.ai had 487,588,090 shares in issue at the end of October. Of these, 263,059,605 were listed H shares and 224,528,485 were unlisted. One percent of the total is roughly 4.88 million shares.

At Tuesday's closing price of HK$482, that stake would cost about HK$2.35 billion, based on MLQ.ai arithmetic. The company could only spend the full HK$4.0 billion if the stock averaged roughly HK$820 during the program. In practice, the 1% cap binds before the dollar ceiling at current prices.

How far the stock has fallen

The shares closed at HK$482 on Tuesday, up from HK$433.80 on Monday. The 52-week high is HK$2,980. Tuesday's close sits 84% below that peak.

The decline also undercuts the company's recent capital raising. In September, Z.ai sold new H shares at HK$714 each, a 9.96% discount to the prior close. The placement raised about HK$15.7 billion. The company also issued RMB20.14 billion of convertible bonds due 2027, with an initial conversion price of HK$892.50.

Tuesday's close is about 32% below the September placement price. The buyback, even at its full dollar size, would return only a fraction of the money raised then.

What the buyback signals

Z.ai, previously known as Zhipu AI, is one of China's prominent AI developers and listed in Hong Kong under its current name. The repurchase plan arrives as the stock trades at its lowest levels since the September raise.

The company has committed no schedule. The board's language leaves room to buy nothing. What the mandate does provide is capacity: up to HK$4.0 billion of firepower, plus a shareholder-approved mechanism running through the 2026 annual meeting.

Investors will watch whether the company spends near the HK$2.35 billion the cap allows at today's price, or whether the stock's path toward the HK$820 average needed to deploy the full budget becomes the real test of management's stated confidence.