FREMONT, Calif. — AXT Inc. (NASDAQ:AXTI) saw its stock climb 9.7% on Friday, closing at $61.64 and pushing the company's equity value to approximately $4.04 billion. The rally comes amid renewed investor interest in compound semiconductors, but the valuation raises questions about whether the stock has run ahead of fundamentals.
At the current price, AXT trades at 21.2 times its annualized second-quarter sales, a steep multiple even after the company posted record revenue in its indium-phosphide segment. The revenue surge, however, masks a critical detail: a significant portion of the company's net income is being generated by interest earned on its enlarged cash pile, not from core manufacturing operations.
Rally in Context
Friday's move, while impressive, leaves the stock 4.1% below the $64.25 per-share price of AXT's April equity offering. Shares have also declined 30.8% since June 5, despite the recent bounce. The stock's 52-week range is $36.97 to $110.74, reflecting the volatility that has characterized the company's recent trading.
The operating turnaround, however, is real. Second-quarter revenue reached $47.6 million, a 165% year-over-year increase, while gross margin expanded to 44.9% from 8.0% in the prior-year period. CEO Morris Young highlighted the company's "highest quarterly indium phosphide revenue to date," driven by demand for wafers used in optical transceivers, silicon photonics, and other high-speed data center links.
Valuation Concerns
The $4.04 billion market capitalization, based on the Sept. 4 close and 65.57 million shares outstanding, implies a sales multiple of 21.2x and an earnings multiple of 90.8x based on annualized second-quarter GAAP profit. These figures are scenarios, not forecasts, but they highlight the premium investors are paying for future growth.
Supporting the growth narrative is a long-term supply agreement with Lumentum Holdings Inc. (NASDAQ:LITE), signed in July, under which AXT will supply compound-semiconductor substrates through 2031. Lumentum's first $43.5 million deposit is due within 30 business days, with a second deposit of the same size planned for 2028. However, these deposits will be credited against future shipments, meaning they serve as financial commitments rather than immediate revenue.
Earnings Quality
In the second quarter, AXT reported operating income of $10.42 million, but interest income of $4.73 million contributed 42.5% of the $11.13 million net income attributable to the company. This reliance on interest income stems from two large equity raises: the April offering of 9.84 million shares, which netted approximately $600.1 million, and a December raise of $93.9 million. As of June 30, AXT held $412.2 million in cash, plus $33.1 million in restricted cash and $5.0 million in short-term investments, against $79.0 million in short-term loans.
The central question is how quickly these funds can be converted into durable wafer capacity and operating earnings. AXT's manufacturing operations are concentrated in China, and all three product families made by its subsidiary Tongmei require Chinese export permits. Management has identified indium-phosphide permits as the most significant challenge, with a backlog of orders awaiting approvals.
Risks Ahead
Investors should be wary of several risks: AI-network spending could cool, export permits could continue to delay shipments, and new capacity may not generate expected returns. AXT must also convert customer deposits into profitable deliveries without eroding margins. Tuesday's trading session will be a test of whether the market is willing to pay above the April financing price before operating profit catches up with the valuation.
