On April 24, the leading company in optical communications, Eoptolink Technology Inc.,Ltd. (300502.SZ), experienced a significant drop of 11.67% on heavy volume. The single-day decline erased 70 billion yuan in market capitalization, with a total trading volume of 50.1 billion yuan, ranking first across the entire market.
The sharp fall occurred the day after the company released its 2025 annual report and 2026 first-quarter report. Why is the market no longer willing to pay a premium for Eoptolink?
In short, its performance fell short of market expectations.
First, let's examine the key figures. For the full year 2025, Eoptolink achieved revenue of 24.842 billion yuan and a net profit of 9.532 billion yuan, representing year-on-year increases of 187% and 235%, respectively.
Compared to peers like Zhongji Innolight and TFC Optical Communication, Eoptolink's growth rates in both revenue and net profit attributable to shareholders were the highest. From this perspective, Eoptolink undoubtedly remains the top player in A-share optical communications.
Naturally, such explosive performance had already been reflected in its stock price. At the beginning of 2025, Eoptolink's shares were still hovering in a relatively quiet bottom range below 50 yuan. However, starting in April, boosted by global AI computing infrastructure demand for 800G/1.6T optical modules and strong order visibility from major North American cloud providers, its stock price began a sustained upward trend, breaking through 100 yuan, then 200 yuan, and even surpassing 300 yuan at its peak, representing a more than tenfold increase.
Simultaneously, to effectively mitigate geopolitical risks, the company aggressively expanded its overseas production capacity. The second phase of its Thailand factory commenced operations officially in early 2025, with capacity continuing to ramp up. This provides a "safety cushion" for securing orders from major overseas clients.
Looking at cash flow, in 2025, the company's net cash flow from operating activities reached 7.7 billion yuan, an increase of over 11 times year-on-year. This indicates the company's profits are supported by genuine cash generation, demonstrating strong collection capabilities and a high position within the industry chain.
It can be said that Eoptolink remains one of the highest-quality optical module stocks in the A-share market, with fundamentally sound operations. However, some risk factors still warrant attention.
First, the 800G optical module market has become highly competitive. The key question is whether 1.6T products can truly shoulder significant revenue growth in the second half of 2026. Additionally, the penetration rate of LPO (low-power) products, which represent Eoptolink's differentiating advantage over competitors, needs monitoring.
Second, inventory increased from 7.234 billion yuan at the end of 2025 to 9.026 billion yuan by the end of the first quarter of 2026, a quarterly surge of 24.8%. Compared to the 4.1 billion yuan at the start of 2025, inventory more than doubled. The company attributed this in its financial report primarily to increased prepayments for raw materials and stockpiling to meet customer demand. However, in the technology hardware sector, inventory always remains a potential risk, akin to the Sword of Damocles. The optical module industry experiences rapid technological iteration. While 1.6T is highly sought-after today, if technology roadmaps shift or major downstream customers cancel orders, this 9 billion yuan inventory could face impairment risks.
Third, Eoptolink's overseas revenue accounts for over 96% of its total. With ongoing uncertainty around the Federal Reserve's interest rate cut expectations, exchange rate fluctuations have become the most significant uncontrollable variable affecting Eoptolink's performance. The quarter-on-quarter decline in net profit attributable to shareholders in Q1 2026 was partly due to exchange losses. It remains to be seen whether the company will increase its use of foreign exchange hedging to mitigate the impact of financial expenses on net profit.
Fourth, Eoptolink is a typical stock whose fortunes are tied to North American tech giants. The capital expenditures of Microsoft, Google, and Meta directly determine Eoptolink's viability. As long as these major companies continue spending heavily on GPUs and optical modules, Eoptolink's investment thesis holds. However, if these giants reduce their expenditures, a severe valuation correction could occur, an area requiring close monitoring.
A popular saying in the market recently aptly describes the high favor the optical communication industry has enjoyed. However, during periods of rapid industry growth, potential risks are often overlooked.
A fundamental principle is that trees cannot grow to the sky, and neither can stock prices—especially after a stock has already risen more than tenfold and earnings growth begins to slow.
The author notes that these are personal views, for reference only, and do not constitute investment advice.
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