Fourier Semiconductor (傅里叶半导体) IPO: after 3,000x oversubscription, stock surged 115% at the open

Frenzy at the gate

It has been reported that Fourier Semiconductor (傅里叶半导体) opened on the Hong Kong market at HK$86 per share—up more than 115% from an issue price of HK$40—briefly lifting its market value above HK$9.6 billion. Market brokers said the public tranche was oversubscribed by more than 3,000 times, with subscription money reportedly exceeding HK$90 billion and over 110,000 orders placed; dark‑pool trades had already pushed paper gains into the triple digits. Reportedly global long‑only funds from Millennium to Jump Trading also showed up in the book, underscoring how eager investors were to get exposure.

Growth, strategy and why investors piled in

Why the stampede for a ten‑year‑old, still loss‑making chip designer? Fourier’s pitch is straightforward: rapid share gains gained through aggressive pricing and heavy R&D. Per its prospectus, revenue rose from about RMB 130m in 2022 to RMB 355m in 2024, but net losses persisted (RMB 65.9m, RMB 94.1m and RMB 56.8m in 2022–24 respectively). The company says it “strategically” accepted low pricing to win customers; it now ranks among the global top‑four in power‑amplifier audio chips and supplies tier‑one handset makers including Xiaomi (小米), Honor, vivo, Transsion (传音控股) and Samsung. That commercial traction, plus a long list of industrial and venture backers—Huaqin Technology (华勤技术), Transsion, Shunwei Capital (顺为资本), Hillhouse Capital (高瓴创投), Sequoia China (红杉中国) and the national integrated circuit fund among them—appears to have outweighed near‑term profitability concerns.

Risks: cash burn, concentration and litigation

But the balance sheet leaves cracks. Fourier’s R&D spend was the lion’s share of operating costs—RMB 68.06m in 2024 and RMB 55.69m in the first ten months of 2025—leaving cash and equivalents at only about RMB 73.5m by end‑October 2025, with current liabilities near RMB 164m and interest‑bearing bank debt of roughly RMB 80.5m. It has been reported that Aiwai Electronics (艾为电子) filed a patent‑infringement suit against Fourier; the case is slated for trial in Shanghai and will add regulatory and legal risk to an already capital‑intensive business. And yes, critics note founder share transfers in 2021–22 that looked like early cash‑outs—another reputational patch to stitch.

What comes next?

Investors have rewarded market share and a local supply story at a time when US export controls and geopolitical decoupling have made domestic chip suppliers strategically appealing. But buyers should ask: can Fourier translate scale into sustained margins, diversify away from a handful of customers and fend off litigation? The IPO proved market appetite exists. Turning that appetite into durable profits is the far harder test.