Wavelength Opto reported a much stronger profit profile for the first half of 2026, with earnings growth far outpacing revenue. The company posted revenue of 243 million yuan for the period, up 8.89% from a year earlier. Net profit attributable to shareholders reached 28.85 million yuan, a 102.65% increase, while non-recurring adjusted net profit came in at 24.26 million yuan, up 127.31%.
Operating cash flow also improved sharply, swinging from negative 2.37 million yuan in the same period last year to positive 28.08 million yuan, a year-over-year increase of 1283%. The company also proposed a dividend plan of 1 yuan for every 10 shares.
Based in Nanjing, Wavelength Opto is less widely known than fellow optics player ML Optics in the same city. Since its 2023 listing, the company’s revenue has grown steadily, but profitability had been less impressive. The original article said overseas brands still dominate the higher-end optical components market, leaving domestic companies with relatively weak share in that segment.
A product mix reset drove most of the earnings jump
The clearest change in the latest half-year report was inside the company’s business structure. According to the article, that shift accounted for about 76% of the profit increase.
- Optical components generated 116 million yuan in revenue, up 29.35%, with gross margin rising 6.87 percentage points to 34.30%.
- Optical assemblies brought in 109 million yuan, up 5.87%, while gross margin increased 1.72 percentage points to 35.37%.
- Optical system solutions fell to 18.34 million yuan, down 40.53%, though gross margin still improved 6.62 percentage points to 32.43%.
The result was straightforward: higher-margin businesses got larger, and the shrinking segment became less important. Overall gross margin rose from 30.07% to 34.64%, an increase of 4.57 percentage points. Based on 243 million yuan in revenue, the increase in gross profit was about 11.1 million yuan, equal to 76% of the 14.61 million yuan increase in net profit.
In other words, the earnings surge did not come from a one-off transformational event. It came from a quieter adjustment in what the company was selling and where it was making money.
A less visible theme: replacing germanium with chalcogenide glass
Revenue rose 8.89% in the first half, but operating cost increased only 1.78%. That gap suggests scale effects are beginning to show. The article noted that optical components are a capital-intensive business, so higher capacity utilization tends to lower fixed cost per unit.
The more important detail may sit deeper in the materials stack. Germanium has long been a core material in infrared optics, but it is costly and subject to significant price swings. Wavelength Opto has been developing chalcogenide glass materials in recent years. The original report said those materials offer lower cost, lighter weight, and are better suited for small-size precision molding and mass production.
According to Securities Times’ analysis of the interim report, substitution from germanium to chalcogenide glass is accelerating. The article framed this not as a short-term cost cut, but as a change in the underlying materials system. If the substitution is completed, Wavelength Opto’s cost curve in infrared optics could move structurally lower. The article argued that this longer-term benefit has barely been reflected in the company’s current valuation.
Expense control helped, and the 2025 base was low
Part of the sharp growth rate also came from the comparison base. In the first half of 2025, Wavelength Opto’s non-recurring adjusted net profit was only 10.67 million yuan. With the denominator this small, even a moderate improvement in profit would produce a large year-over-year increase.
Sales efficiency improved as well. Selling expenses rose only 1.22% in the first half, well below the 8.89% increase in revenue, indicating that each yuan of selling expense generated more revenue than before.
The controlling shareholder case remains unresolved
The article also mapped out a timeline tied to the company’s ongoing legal overhang. On June 18, 2026, Wavelength Opto said controlling shareholder Huang Shengdi had been released on bail pending trial over what the company described as falsely declaring exports of germanium-containing lenses.
The article said customs inspection began in April 2025, the case was transferred to the anti-smuggling department in July, and the company then halted the export business involved in the case.
For full-year 2025, the company went through what the article called a period of “revenue growth without profit growth,” as sharp germanium price volatility and inventory write-downs weighed on earnings. But the same event also pushed the company to accelerate the replacement of germanium with chalcogenide glass after the export business was suspended.
By the first half of 2026, infrared business revenue had increased 19.77% year over year, with margin improving at the same time. The article’s point was that the data now shows a forced transition is already feeding into operating results. Even so, the direction of the criminal case involving the controlling shareholder remains uncertain.
Semiconductor growth was fast, but the business is still small
Another bright spot in the half-year report was the semiconductor and broader pan-semiconductor segment. Revenue in that area was about 35 million yuan in the first half, including about 18 million yuan from semiconductor business, up 83% from a year earlier.
The company’s products now cover mature-process collimated light source systems, optical lenses used with light sources in advanced-process lithography equipment, and key parts for metrology and inspection equipment.
Still, the article cautioned against reading too much into the growth rate alone. Semiconductor revenue of 18 million yuan remains very small, and the 83% increase comes off a low base. The segment currently accounts for only about 7.4% of total revenue, making it more of a valuation support story than a major profit contributor at this stage.
Peer comparison and valuation leave little room for disappointment
The article compared Wavelength Opto with peers. ML Optics already gets 37% of its revenue from semiconductor business, has entered the supply chains of major customers including KLA, Camtek, and Meta, and reports a gross margin of 54%. Its positioning is more high-end, though the article suggested the elasticity there is no longer large.
Fuguang Co. follows a different route centered on security and military specialty optics. Wavelength Opto, by contrast, is trying to move from industrial laser optics toward semiconductor optics. The article described that path as being in an early scaling phase, with meaningful upside potential but less certainty than the other two companies.
The market is already pricing in a lot
Using the latest market capitalization, Wavelength Opto is trading at around 184x PE on a trailing twelve-month basis, according to the article. Even using projected full-year 2026 profit, PE would still be above 130x.
There is also a balance-sheet point worth watching. Accounts receivable rose 19.64% year over year, noticeably faster than revenue growth, which the article said suggests collection pressure should not be ignored.
For a company still in the middle of a business transition, and with only 18 million yuan in semiconductor revenue so far, the market price already reflects a fairly optimistic set of expectations. The profit doubling is real. Whether the stock can justify another leg higher, the article argued, will need more quarterly data.
The original article was published by the WeChat public account Deepwater Finance Club and written by Wuhai.