AXT Inc. (AXTI) Soars 19.8% on Looming Indium Phosphide Price Hike
AXT Inc. (AXTI) shares rose up to 19.8% to $97.79 after reports that indium phosphide (InP) prices could increase about 10% by year end. Nomura cited InP substrate price jumps in 2-inch and 3-inch wafers. The article also notes AXT supply deals and Coherent prepaying up to $22.3M, plus Lumentum reserving $87M.
How this was made

The 30-second read
Why it matters
The article attributes AXT’s sharp rally to expectations of further InP price increases (including a reported 10% Q4 rise) and notes prior capacity reservation deals that could help AXT capture higher pricing.
Market read
Traders are repricing AI photonics supply-chain exposure based on reported InP substrate price strength and supply crunch signals.
What to watch
Export-permit constraints and China policy risk are central to AXT’s business; without fresh permit or demand data, the price-hike thesis may be overstated.
Background
AXT supplies indium phosphide (InP) substrates used in lasers for AI-related optical and photonics applications, and has faced export-permit challenges amid China export restrictions.
Ticker impact
AXT Inc. shares jumped up to 19.8% after reports said indium phosphide prices could rise about 10% in Q4, boosting InP suppliers like AXT.
Likely continued volatility and momentum trading while the market digests the InP price-hike narrative and any follow-on supply-demand updates.
The article ties AXT’s same-day surge to a specific InP price outlook (10% by year-end) and cites prior capacity reservation deals, but it does not provide new AXT-specific contract terms beyond previously referenced agreements.
Market effects
Supports the AI supply-chain trade around photonics and InP substrates, potentially lifting sentiment for other InP/optical-photonics supply chain names.
China-linked InP pricing and capacity constraints are highlighted via the Wind InP index and yuan wafer price moves.
If InP substrate pricing rises, it can propagate into laser/optical component cost structures used across AI infrastructure globally.
Counterpoint
The catalyst is largely a third-party price outlook (Nomura/industry experts) rather than a confirmed AXT margin or volume update, so the move could fade if pricing gains do not translate into contracted revenue.
Key entities
- companyAXT Inc.
NASDAQ-listed InP substrate supplier whose shares rose sharply on reported InP price-hike expectations.
- financial_services_firmNomura
Cited as reporting InP substrate price jumps based on industry experts.
- companyCoherent Corp.
Agreed to prepay AXT up to $22.3 million for expansion of six-inch InP substrate capacity (2026-2028), referenced as prior support.
- companyLumentum Holdings
Entered an $87 million agreement reserving InP capacity for five years, referenced as prior support.



