AXT Inc. Shares Plunge 20% Amid Mixed Signals on Indium Phosphide Demand

Quick overview

AXT Inc. (NASDAQ: AXTI), a manufacturer of semiconductor substrates that is riding high on excitement about artificial intelligence infrastructure, saw a severe single-session selloff on Monday, losing over 20% of its value in intense trading. Despite the company’s optimistic stance regarding indium phosphide, a substance essential to high-speed AI data center connectivity, the decline raises new concerns about whether the stock’s remarkable recent surge had outpaced the fundamentals.

After ending at $52.84 the previous session, the stock began at $49.37 before declining further to close at $41.99. More than seven million shares were exchanged, which is significantly more than usual. Despite Monday’s losses, AXTI is among the top performers of the first quarter of 2026, having returned almost 108% over the previous ninety days.

AXTI Stock Tanks Amid Earnings Miss and Supply Chain Doubts

A number of issues have come together to create the selling pressure. Wall Street was disappointed by AXT’s most recent quarterly results, which were released in February. The firm reported a loss of $0.05 per share compared to an analyst estimate of $0.04, while revenue of $23.04 million was less than the $24.24 million anticipated. Return on equity was at -9.5%, and net margins were still negative at -24.07%.

Regarding the supply chain, B. Riley described itself as “incrementally cautious” on AXT in a March note following the detection of concerning indicators. While another confirmed a seven-year supply arrangement with Sumitomo Electric, AXT’s main competitor in the InP substrate market, one significant industry stakeholder rejected the notion of an indium phosphide bottleneck that had supported much of the bullish thesis. B. Riley has a $21.00 price target and a neutral rating on the company.

The Bull Case for AXT Inc: AI Infrastructure and Capacity Expansion

There have been supporters of AXT. The Fremont, California-based business controls around 40% of the world market for indium phosphide substrate, a substance that is becoming more and more important for the optical interconnects that power AI data centers. After a dismal Q4 2025, management has stated that it anticipates sequential revenue increase in Q1 2026, driven by export permits already obtained this year. Additionally, the company has been aggressively growing its clientele to include significant Tier-1 technology firms and is on course to double its InP production capacity in 2026.

Ahead of its May 14 annual stockholder meeting, AXT has proposed raising the number of authorized common shares from 70 million to 120 million, further attracting investor attention. This move suggests that management may intend to use equity to fund development, but it also brings potential dilution.

Valuation Tension and Insider Selling

One persistent issue is the stock’s steep valuation premium. At roughly $22.80 to $30.75, the average analyst price target is significantly lower than Monday’s closing price of $41.99. According to a popular valuation model, the stock’s fair value is $28.25, suggesting that it is currently about 50% overpriced.

Insiders have been selling rapidly, which has increased investor anxiety. In early March, CEO Morris Young sold over 159,500 shares for about $6.9 million, and for the previous three months, insider sales totaled more than 502,000 shares valued at over $21 million. Currently, insiders own 8.8% of the business.

In contrast, institutional investors hold 49.5% of the float, with many new positions created in the last few quarters.

What’s Next for AXTI Stock?

AXT is at a crossroads with a consensus Hold rating, a stock that is trading far over analyst targets, continuous losses, and conflicting industry signals. If demand increases as anticipated, the AI-driven indium phosphide story will still be intriguing, but there are significant concerns due to excessive insider selling, a proposed share dilution, and a strong rival securing long-term supply agreements. Investors will be keeping a careful eye on Q1 2026 results to see if sequential growth guidance can be translated into actual numbers.

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Arslan Butt

Lead Markets Analyst – Multi-Asset (FX, Commodities, Crypto)

Arslan Butt serves as the Lead Commodities and Indices Analyst, bringing a wealth of expertise to the field. With an MBA in Behavioral Finance and active progress towards a Ph.D., Arslan possesses a deep understanding of market dynamics. His professional journey includes a significant role as a senior analyst at a leading brokerage firm, complementing his extensive experience as a market analyst and day trader. Adept in educating others, Arslan has a commendable track record as an instructor and public speaker. His incisive analyses, particularly within the realms of cryptocurrency and forex markets, are showcased across esteemed financial publications such as ForexCrunch, InsideBitcoins, and EconomyWatch, solidifying his reputation in the financial community.

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