AXT Secures $545M to Scale AI Hardware Amid US-China Chip Tensions

FREMONT, Calif. – October 28, 2026 – In a move that underscores the escalating infrastructure demands of the artificial intelligence boom, AXT, Inc. has orchestrated a massive capital injection for its Chinese subsidiary. The Fremont-based material science company announced today that Beijing Tongmei Xtal Technology Co., Ltd. has entered into definitive agreements for a private equity financing round that could reach up to RMB 3.67 billion (approximately US$545 million).

Targeted to close in December 2026, the transaction represents a masterclass in corporate financial engineering, designed to unlock value while navigating one of the most complex geopolitical landscapes in modern technology. The financing will provide Tongmei with a minimum of US$285 million and up to US$545 million in direct equity capital. The primary objective is to aggressively expand manufacturing capacity for indium phosphide (InP) semiconductor substrates—a critical, yet often overlooked, component in the global race to build faster AI data centers.

For institutional investors and fintech analysts, this deal highlights a crucial pivot in semiconductor supply chain financing. Rather than diluting the parent company's equity, AXT is leveraging localized Asian capital to fund capital-intensive manufacturing expansions in China, all while eyeing a lucrative overseas public listing for its subsidiary.

The AI Hardware Bottleneck: Scaling Indium Phosphide

The explosive growth of generative AI and machine learning has created an unprecedented bottleneck in data center networking. While the market's attention has largely fixated on the processing power of advanced Graphics Processing Units (GPUs), these chips are only as effective as the networks connecting them. As AI clusters scale, the bandwidth required to transfer massive datasets between servers is escalating at a staggering pace.

This is where indium phosphide becomes indispensable. Traditional silicon substrates cannot meet the performance requirements of next-generation optoelectronic devices. InP is the foundational material for the lasers and detectors used in high-speed optical transceivers, particularly the 800G and emerging 1.6T modules that are becoming the standard in advanced AI data centers. Furthermore, as the industry moves toward Co-Packaged Optics (CPO)—a technology that integrates optical engines directly into network switches to reduce power consumption—the reliance on high-quality InP substrates will only intensify.

“This strategic financing represents a milestone for Tongmei, which is issuing its own shares to provide RMB directly into its operations,” said Morris Young, chief executive officer of AXT. “Funds raised by Tongmei will be used to advance capacity expansion for indium phosphide wafers at a time when demand for these wafers is outpacing supply. Proceeds will also be used to increase capacity at our raw material companies in China.”

The supply-demand imbalance is stark. Market analysts tracking semiconductor substrates note that the race to scale InP production pits AXT against formidable global competitors like Sumitomo Electric, JX Nippon Mining & Metals, and Freiberger Compound Materials. By injecting up to US$545 million directly into its manufacturing footprint, Tongmei is positioning itself to capture a dominant share of this high-margin market, ensuring that optical transceiver manufacturers have the raw materials necessary to keep the AI revolution running at full speed.

Carve-Out Capital: Unlocking Value for Tongmei

From a corporate finance perspective, the Tongmei transaction is a sophisticated carve-out strategy. AXT is funding subsidiary-level expansion via equity while preserving parent control. Assuming the maximum investment amount is reached, AXT expects to retain approximately 73.40% ownership of Tongmei and will continue to consolidate the subsidiary in its financial statements. Concurrently, AXT has agreed to recapitalize Tongmei by subscribing for over 342 million ordinary shares for the RMB equivalent of US$400 million, further solidifying its controlling stake.

The lead investor driving this private equity round is BNK-B3 HK Holdings Limited, managed by an undisclosed but highly influential Asian asset manager. The involvement of this lead investor is not merely financial; it is deeply strategic. According to AXT, the asset manager has a proven track record of guiding companies through complex overseas listing processes and is committed to steering Tongmei toward an independent public debut.

This represents a significant strategic pivot. In November 2022, Tongmei withdrew its application for an initial public offering on the Shanghai Stock Exchange's STAR Market, citing evolving domestic capital market conditions. By realigning its sights on an overseas listing, Tongmei is seeking to tap into a broader, more liquid international investor base that assigns premium valuations to AI-adjacent hardware companies.

However, institutional investors backing this private equity round have secured robust downside protections. The deal covenants stipulate that if Tongmei fails to complete a Qualified IPO by the third anniversary of the closing, investors possess redemption rights. If exercised, Tongmei would be obligated to return the subscription price plus an 8% annual compounded return. Furthermore, the incoming investors will receive priority on profit distributions and liquidation preferences, positioning them ahead of other shareholders, and the lead investor has secured the right to nominate one of Tongmei's nine directors. These terms reflect a calculated risk assessment by the private equity consortium, balancing the massive upside of the AI optical market against the execution risks of a cross-border IPO.

Straddling the Chasm: US-China Semiconductor Arbitrage

While the financial mechanics and market demand present a compelling growth narrative, the geopolitical realities of this transaction are fraught with complexity. AXT is attempting a high-stakes semiconductor arbitrage: operating as a California-headquartered company that relies on a China-based subsidiary, raising Asian capital to expand Chinese manufacturing, all to supply components for global AI infrastructure.

This geographic straddle exposes the company to intense regulatory scrutiny from both Washington and Beijing. The U.S. Department of Commerce’s Bureau of Industry and Security (BIS) has systematically tightened export controls aimed at restricting China’s access to advanced semiconductor technology. While indium phosphide wafers are primarily utilized in optical communications rather than leading-edge logic computing, the broad and evolving scope of U.S. controls—including the Foreign Direct Product Rule (FDPR) and the ever-expanding Entity List—poses an omnipresent operational risk.

Conversely, Beijing has demonstrated its willingness to weaponize its dominance in raw materials. The People's Republic of China has previously implemented strict export controls on critical semiconductor materials like gallium and germanium. Although AXT manufactures InP, gallium arsenide (GaAs), and germanium substrates, the company has strategically insulated itself through deep vertical integration. AXT holds equity stakes in more than ten raw material suppliers within China. A portion of the newly raised capital is specifically earmarked to increase capacity at these domestic raw material companies, effectively hardening Tongmei’s localized supply chain against external shocks.

Yet, this deep integration within the Chinese ecosystem complicates the path to an overseas listing. International exchanges and their regulatory bodies are increasingly wary of companies with heavy exposure to Chinese operational and geopolitical risks. The lead asset manager will have to navigate a labyrinth of compliance, export control audits, and national security reviews to successfully bring Tongmei to an overseas public market.

As the December 2026 closing date approaches, the execution of this financing agreement will serve as a bellwether for the broader semiconductor industry. It tests the viability of cross-border capital flows in an era of technological decoupling, revealing whether the insatiable demand for AI infrastructure can ultimately transcend the gravity of global trade wars.