Woori-Net

Woori Net is a telecom equipment specialist founded in January 2000 by researchers who came from Samsung Electronics' network division, with its core business being transmission equipment (POTN, packet-optical transport devices, access gateways, cellular-IoT) alongside an OLED display organic materials business.

According to the 2025 annual report, the MSPP (PTN and related) product group accounted for 32.0% of revenue, the cellular-IoT product group 16.1%, and the access gateway (AGW) product group 7.3%.

Sales are directed at the three major telecom operators (KT, LG Uplus, SK Group) as well as public infrastructure entities such as the Korea National Railway, the Korea Expressway Corporation, KEPCO, and private network operators, with indirect supply to local governments, police, and fire authorities via system integrators.

OLED materials are supplied to Chinese display makers, forming a separate business line from the domestic telecom equipment operation.

In terms of competitive positioning, Woori Net is cited as having held the number one domestic market share in packet transport network (PTN) equipment last year, though rivals such as Kowiber exist in the broader optical transport market with share divided by specific product segment.

A key growth pillar is quantum encryption, where the company is described as the only transmission equipment maker with in-house capability across the full range of quantum security technologies -- QKD (quantum key distribution), QKMS (quantum key management), QENC (quantum encryption devices), and PQC (post-quantum cryptography).

Because revenue with major telecom customers is often finalized only after passing benchmarking tests (BMT) at the point revenue occurs, a conventional order-backlog concept does not apply, and multi-product annual unit-price contracts mean individual contract values are not fixed in advance.

This structure is a key reason why the presence or absence of specific large projects, such as the defense broadband integrated network, has an outsized effect on annual results.

Consolidated revenue for 2025 was KRW 75.5 billion, down sharply from KRW 131.6 billion in 2024, reflecting the base effect from a large share of roughly KRW 79.9 billion in revenue from the defense broadband integrated network equipment project (executed July 2023 to September 2024) being concentrated in the prior year's first half.

Operating profit accordingly fell from KRW 20.1 billion (operating margin 15.2%) in 2024 to KRW 1.9 billion (operating margin 2.6%) in 2025, and net income attributable to owners shrank from KRW 20.4 billion to KRW 3.7 billion.

On a quarterly basis, through Q2 2025 the company still posted revenue of KRW 25.1 billion and operating profit of KRW 2.7 billion, retaining some residual defense-project benefit, but by Q3 2025 (KRW 17.5 billion revenue, KRW 0.5 billion operating profit) and Q4 2025 (KRW 17.7 billion revenue, KRW 0.3 billion operating loss) the revenue gap left by the project's conclusion became more evident.

Q1 2026 saw revenue of KRW 11.8 billion, an operating loss of KRW 4.0 billion, and a net loss attributable to owners of KRW 3.3 billion, reflecting a combination of seasonal weakness and order timing delays, before Q2 2026 turned positive again with revenue of KRW 22.4 billion, operating profit of KRW 0.5 billion, and net income attributable to owners of KRW 0.9 billion.

Summing the trailing four quarters (Q3 2025 through Q2 2026), revenue totals roughly KRW 69.4 billion, but the large Q1 loss left the period with a net loss attributable to owners.

Looking further back, 2022 revenue was KRW 62.3 billion with an operating loss of KRW 6.9 billion, before the company turned profitable in 2023 with revenue of KRW 119.1 billion and operating profit of KRW 8.5 billion, and then posted record revenue and profit in 2024 on the defense project effect -- a pattern that shows results swinging repeatedly depending on the presence of large projects.

Operating cash flow in 2025 (KRW 16.6 billion) was solid relative to net income, whereas in 2023 operating cash flow was negative KRW 14.8 billion, a year showing a large divergence from reported net income.

In the domestic transmission equipment market, the transition to 5G standalone (SA) mode and traffic growth driven by physical AI applications such as autonomous vehicles and humanoid robots have emerged as key demand variables.

Hana Securities analyst Kim Hong-sik assessed that large-scale new equipment adoption, along with shorter replacement cycles and higher unit prices from more demanding specifications, is expected as equipment load increases.

The government-led 5G SA network transition is cited as generating new backbone transmission equipment demand as operators replace existing LTE cores with dedicated 5G cores.

In addition, the government mandated, through an amendment to the Quantum Technology Industry Act, that central and local governments and public institutions establish and apply plans for securing quantum security technologies such as post-quantum cryptography (PQC) and quantum key distribution (QKD), expanding support from R&D into industrialization, supply chains, security, and defense.

A white paper published by the National Information Society Agency and the Ministry of Science and ICT projected that the global quantum encryption communication market would grow at a compound annual rate of 39.8% to reach roughly KRW 24.6 trillion by 2030, with the government presenting a roadmap to build quantum encryption communication for core national networks by 2028 and develop satellite-based quantum encryption communication by 2030.

In terms of competitive structure, SK Telecom and KT have been upgrading their own QKD technologies while transferring technology to domestic equipment makers including Kowiber and Woori Net to build out the supply chain, positioning small and mid-cap equipment makers as one pillar of a telecom-operator-led quantum security value chain.

Meanwhile, the broader optical communication and telecom equipment theme saw sharp short-term swings in the first half of 2026 tied to expectations around U.S. big tech investment in silicon photonics and data centers, with one senior research fellow at the Korea Capital Market Institute noting that while the industry's long-term outlook is positive, companies lacking a clear link to actual earnings could end up as mere theme stocks.

Hana Securities, in a March 2026 report, estimated 2026 revenue at KRW 115.8 billion and operating profit at KRW 8.5 billion, observing that excluding one-off factors, the company could set record results.

In the same report, Hana Securities raised its 12-month target price to KRW 15,000, applying a target price-to-book multiple of 1.5x to its 2026 forward book value per share estimate.

The company participated in the April 2026 World IT Show, exhibiting a packet-based hybrid quantum encryption transmission device co-developed with SK Broadband, described as a dual-encryption structure applying both QKD-distributed quantum keys and PQC algorithm keys simultaneously, and reported to have already been field-tested on Korea Electric Power Corporation's communication network.

The government's plan to upgrade and expand its open quantum testbed, extending the existing Seoul-Pangyo-Daejeon route nationwide and verifying interoperability with quantum communication networks in Japan and Singapore, leaves open the possibility of geographic expansion in related equipment demand.

That said, the timing of Korea's 2026 spectrum reallocation and auction and telecom operators' 5G-SA investment schedule remain unconfirmed variables that could directly affect the timing of transmission equipment orders.

Given the company's revenue recognition structure, whether new large public or defense projects are ordered is likely to significantly determine the direction of quarterly results, and whether the Q2 2026 return to profit continues will depend on order flow in the second half.