Baidu shares jump nearly 10% in a day as Kunlunxin IPO talk fuels a valuation rerating

On January 2, 2026, Baidu sparked a sharp market reaction after announcing that its majority-owned AI chip arm, Kunlunxin, had filed for a Hong Kong Main Board listing on January 1. Investors broadly view Kunlunxin as a critical “hardware and compute foundation” for Baidu’s AI strategy, and the filing immediately fueled expectations of a valuation re-rating for Baidu’s underlying AI infrastructure assets.

Kunlunxin’s fundraising history suggests a longer-term capitalization path rather than a sudden move: reports indicate it was valued at roughly RMB 13 billion in 2021, rising to about RMB 21 billion (~US$3 billion) by a July 2025 round.

Baidu remains firmly in control. The company disclosed it holds about 59.45%, and Kunlunxin is expected to remain a Baidu subsidiary after the spin-off listing.

The spin-off rationale

Baidu’s stated rationale centers on: (1) improving standalone valuation transparency; (2) attracting specialist hard-tech investors; and (3) strengthening governance and enabling independent financing—potentially benefiting Baidu’s broader ecosystem over time.

A key detail: waiver under HKEX PN15

One notable technical point is Baidu’s waiver from PN15’s “assured entitlement” requirement (e.g., preferential allocation/rights for existing shareholders). Baidu argued that extending such rights globally—especially to ADR holders—could trigger complex and costly U.S. securities-law procedures that are disproportionate to the benefits, and HKEX approved the exemption to keep the process practical and efficient.

What comes next for Kunlunxin

With an IPO, Kunlunxin transitions from an internal strategic unit to an independently priced public supplier. Beyond technology, it will need to demonstrate commercialization, customer expansion outside Baidu’s ecosystem, and a credible long-term profitability path—while competing against global incumbents and strong domestic peers.