PER, EPS, PBR and BPS are calculated in-house from the last 4 quarters (2025Q3–2026Q2) · Dividend yield is based on ₩50 per share · Prices as of the 2026-10-02 close
Coweaver returned to annual operating profit in 2025 but slipped back into an operating loss in the first half of 2026, underscoring earnings volatility tied to the timing of telecom and public-sector orders.
2025 revenue reached KRW 62.6 billion with operating profit of KRW 0.3 billion, reversing the 2024 operating loss of KRW 7.6 billion, but the company posted an operating loss again in the first half of 2026.
Q4 2025 revenue of KRW 26.4 billion and operating profit of KRW 4.6 billion drove full-year results, while Q1 and Q2 2026 posted operating losses of KRW 2.2 billion and KRW 1.3 billion, respectively.
The company supplies ROADM, POTN and PTN optical transport equipment to Korea's three major telecom operators (KT, SK Telecom, LG Uplus) and wholly owns its subsidiary WeaverBridge.
The company continues technology cooperation with KT in quantum key distribution (QKD), while AI data center and 6G infrastructure expansion have emerged as new growth themes.
The debt ratio fell from 28.2% in 2022 to 16.1% in 2025, improving financial stability, though operating cash flow has swung sharply between positive and negative from year to year.
Founded in 2000, Coweaver is a specialized optical transport equipment maker that designs and produces WDM, ROADM, PTN, MSPP, POTN and 5G-PON systems for wired and wireless network buildouts.
Its core customers are Korea's three major telecom operators, KT, SK Telecom and LG Uplus, and it holds proprietary technology spanning backbone networks (ROADM/POTN), metro networks (PTS/OTN) and access networks (5G-PON/optical terminals).
The company wholly owns its subsidiary WeaverBridge to pursue business synergies and has prior overseas project experience, including backbone network construction in Myanmar.
More recently, it has been expanding its next-generation product lineup around quantum key distribution (QKD) and AI-based optical line supervision (OLS) systems, with management saying it aims to accelerate commercialization.
In the quantum encryption field, Coweaver is among the domestic manufacturers, alongside WOORINET, that produce equipment based on technology licensed from KT.
Korea's optical transport equipment market is served by a small number of domestic players including Coweaver, WOORINET, Telefield and Hanwool Materials Science, alongside price and technology competition from larger global vendors such as Huawei and Nokia.
Revenue is heavily dependent on the timing of capital expenditure orders from telecom operators and public institutions such as the Korea Expressway Corporation and Korea Rail Network Authority, reflecting the project-based nature of the business.
The company has also been moving to diversify into RF measurement equipment and communication equipment testing.
| Quarter | Revenue | Operating profit | Op. margin |
|---|---|---|---|
| 2025Q2 | ₩14.2B | -₩700M | −4.7% |
| 2025Q3 | ₩13.2B | -₩1.8B | −13.3% |
| 2025Q4 | ₩26.4B | ₩4.6B | 17.4% |
| 2026Q1 | ₩12.4B | -₩2.2B | −17.6% |
| 2026Q2 | ₩12B | -₩1.3B | −10.6% |
| Year | Revenue | Operating profit | Net income (parent) | Op. margin | ROE | Debt-to-equity |
|---|---|---|---|---|---|---|
| 2022 | ₩89.6B | ₩300M | ₩4.5B | 0.3% | 91.7% | 28.2% |
| 2023 | ₩83.4B | -₩2.6B | ₩800M | −3.1% | 0.6% | 25.8% |
| 2024 | ₩46.8B | -₩7.6B | -₩4.1B | −16.3% | −3.2% | 19.3% |
| 2025 | ₩62.6B | ₩300M | ₩3.5B | 0.5% | 2.2% | 16.1% |
Consolidated basis (financial statements including subsidiaries) · Final figures from DART filings · Net income attributable to owners of the parent · Data as of 2026-08-23
Coweaver's 2025 consolidated revenue came to KRW 62.6 billion, up from KRW 46.8 billion in 2024, with operating profit of KRW 0.3 billion (a 0.5% operating margin), marking a reversal from the 2024 operating loss of KRW 7.6 billion (-16.3% margin).
Net income attributable to owners also improved from a loss of KRW 4.1 billion in 2024 to a profit of KRW 3.5 billion in 2025.
Notably, 2023 revenue stood at KRW 83.4 billion alongside an operating loss of KRW 2.6 billion (-3.1% margin), illustrating how both revenue scale and profitability have swung considerably from year to year.
On a quarterly basis, Q4 2025 revenue jumped to KRW 26.4 billion with operating profit of KRW 4.6 billion, driving the full-year turnaround, while Q3 2025 saw revenue of KRW 13.2 billion alongside an operating loss of KRW 1.8 billion, highlighting substantial quarter-to-quarter variance.
In 2026, the company reverted to losses, posting an operating loss of KRW 2.2 billion on revenue of KRW 12.4 billion in Q1 and an operating loss of KRW 1.3 billion on revenue of KRW 12.0 billion in Q2.
Net income attributable to owners over the most recent four quarters (Q3 2025 through Q2 2026) totaled roughly KRW 2.8 billion, suggesting the seemingly one-off strength of Q4 2025 accounted for a large share of the annual result.
Operating cash flow swung from a net inflow of KRW 16.2 billion in 2023 to a net outflow of KRW 11.4 billion in 2024 and back to a net inflow of KRW 3.7 billion in 2025, with the amplitude of cash generation exceeding that of reported profit.
The debt ratio steadily declined from 28.2% in 2022 to 16.1% in 2025, reflecting a comparatively stable financial structure.
The optical transport equipment industry is a classic order-driven business, with demand shaped by telecom operators' backbone, metro and access network investment cycles and by public institutions' dedicated network construction budgets.
More recently, the expansion of AI data centers and demand for high-capacity traffic processing, together with national 6G research and development initiatives, have emerged as new demand drivers.
The government has finalized a policy framework covering 2026 through 2028 to support upgrades to information and communication infrastructure, suggesting continued network investment and policy support during this period.
The domestic market is served by a small number of local vendors, including Coweaver, sharing demand from the three telecom operators and public institutions, alongside ongoing price competition from larger overseas vendors.
In quantum key distribution, the Ministry of Science and ICT is pursuing an expanded quantum testbed and a post-quantum cryptography (PQC) pilot conversion program, while telecom operators such as KT and SK Telecom develop proprietary technology and collaborate with domestic manufacturers to supply commercial equipment.
Within this landscape, Coweaver maintains a technology cooperation relationship with KT and is listed among the domestic manufacturers of quantum encryption equipment.
That said, telecom capital expenditure fluctuates considerably year to year depending on traffic growth rates and capital allocation priorities, and new investment volumes remain in a phase of relative moderation following the peak of the 5G buildout cycle, which stands as a structural variable.
The company has stated it aims to accelerate the expansion and commercialization of next-generation product lines, including quantum key distribution and AI-based optical line supervision systems, which can be read as an attempt to add a new growth axis beyond its traditional telecom-centric revenue base.
Coweaver's inclusion among the manufacturers of quantum encryption equipment built on technology licensed from KT links the company to potential future participation in public-sector, financial and defense-related projects.
Demand for upgraded optical networks driven by AI data center expansion, together with whether telecom operators resume backbone and metro network investment, remain the key variables for future results.
If the pattern of large orders concentrating in specific quarters, as seen in Q4 2025, repeats, quarter-to-quarter earnings volatility is likely to persist for the time being.
The pace of execution of government 6G research funding and quantum technology policy programs, as well as the timing of the three telecom operators' capital expenditure budget allocations, are also key items to monitor.
However, the timing and scale at which these new business opportunities translate into revenue have not yet been disclosed as confirmed figures, and will need to be verified through actual contract and order disclosures.
Coweaver swung from a loss in 2024 to a profit in 2025, only to post an operating loss again in the first half of 2026, meaning that any earnings-based valuation multiple needs to be considered alongside the one-off nature of certain quarters.
During past loss-making periods, earnings-based multiples carried little meaning, and the multiple now forming amid the recent return to profit is not straightforwardly comparable to multiples from earlier periods of stable profitability.
Relative to net assets, the stock trades below book value, which may suggest the market is weighing the sustainability of a future earnings recovery more heavily than current asset value.
Dividends have been paid at a modest level each year, though the yield itself runs below the industry average, leaving earnings trends and progress on new business lines as the central variables for assessment rather than dividend income.
Financial stability indicators such as the declining debt ratio have shown an improving trend, which can serve as a useful reference point for asset-based assessment.
PER, EPS, PBR and BPS are all calculated in-house (the same method as Naver and Toss) · Dividend yield = cash dividend per share from DART filings (supplemented by KRX) ÷ current price · As of 2026-08-23
The company swung from a KRW 7.6 billion operating loss in 2024 to a KRW 0.3 billion operating profit in 2025, with net income attributable to owners improving to KRW 3.5 billion. While the annual result was driven by a concentration of large orders in the fourth quarter, profitability recovered close to breakeven. The debt ratio also fell to 16.1%, alongside improved financial soundness.
Coweaver is listed among the manufacturers of quantum encryption equipment built on technology licensed from KT, participating in the domestic quantum key distribution manufacturing ecosystem. The company is also expanding its next-generation product lineup, including AI-based optical line supervision systems.
With the government having finalized a policy framework for upgrading information and communication infrastructure covering 2026-2028, the execution of related policy funding could provide a favorable environment for these new businesses.
The company has secured all three major telecom operators, KT, SK Telecom and LG Uplus, as core customers and holds proprietary technology spanning backbone, metro and access network segments. This relatively diversifies the risk of revenue concentration on any single telecom operator.
The company posted operating losses in both Q1 and Q2 2026, meaning the 2025 turnaround to profit was not sustained.
Net income attributable to owners summed over the most recent four quarters came to only about KRW 2.8 billion, suggesting the seemingly one-off profit in Q4 2025 accounted for a large share of the annual result.
Revenue itself swung sharply from year to year, falling from KRW 83.4 billion in 2023 to KRW 46.8 billion in 2024 before rising again to KRW 62.6 billion in 2025.
Operating cash flow also reversed from a net inflow of KRW 16.2 billion in 2023 to a net outflow of KRW 11.4 billion in 2024, reflecting the wide swings characteristic of an order-dependent business.
The specific revenue contribution or contract scale from new businesses such as quantum encryption and AI infrastructure has not yet been confirmed through disclosed figures.
Given that these are early-stage businesses centered on policy funding and national research projects, it may take time before they translate into commercial revenue.
A significant portion of revenue depends on the timing of specific project orders from telecom operators and public institutions, so quarterly volatility can widen if results concentrate in a particular quarter or if orders are delayed. The surge in Q4 2025 results followed by renewed weakness in H1 2026 illustrates this pattern.
With network capital expenditure by the three telecom operators in a phase of relative moderation following the peak of the 5G buildout, any delay in the resumption of new investment could also delay a recovery in optical transport equipment orders.
A shift in telecom operators' capital allocation priorities toward data center and AI-related investment could also affect orders for traditional transport equipment.
Beyond competition among a small number of domestic vendors, price competition from larger overseas vendors such as Huawei persists, and the competitive landscape in the new quantum key distribution business is also fluid amid telecom operators' own technology development and expanding cooperation with other companies. Falling behind in technology standards and certification competition could affect market position.
The legal filing deadline for the Q3 2026 quarterly report is November 16, and it will be important to check whether the first-half operating loss trend continued into the third quarter.
The government's 2026 post-quantum cryptography (PQC) pilot conversion program runs through December 15, so it is worth watching for related industry developments and any disclosed commercialization progress among domestic manufacturers.
The three telecom operators are expected to disclose their 2027 capital expenditure guidance alongside Q4 2026 earnings announcements, which will serve as a key indicator for gauging the scale of optical transport equipment orders.
It will be worth monitoring for any new contract or order disclosures related to the 6G national research project and quantum key distribution business, to gauge when these new business lines begin translating into actual revenue.
Coweaver swung from a loss in 2024 to a profit in 2025, only to post an operating loss again in the first half of 2026, once again illustrating the volatility inherent in an order-driven business dependent on the timing of telecom and public-sector procurement.
While a surge in Q4 2025 revenue and operating profit drove the full-year turnaround, cumulative profit over the most recent four quarters has remained relatively modest, leaving the sustainability of earnings as a key question.
The expansion of quantum key distribution and AI-based new product lines is cited as a new growth axis, but the specific scale and timing of revenue contribution have not yet been disclosed as confirmed figures.
It is worth noting that financial stability indicators, such as the declining debt ratio, have shown a steady improving trend.
Going forward, the timing of a resumption in telecom operators' capital expenditure, the pace of execution of 6G and quantum technology policy funding, and quarterly order and revenue disclosures are likely to be the key variables determining the direction of the company's results.
Investors should continue to monitor disclosed quarterly earnings and new business contract information before forming any judgment.
Report written 2026-09-29 · Data as of 2026-09-28
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