PER, EPS, PBR and BPS are calculated in-house from the last 4 quarters (2025Q3–2026Q2) · Dividend yield is based on ₩0 per share · Prices as of the 2026-10-02 close
Seronics is an electronic-parts maker centered on LCD TV components and solar parts whose core operating results remain volatile, while its separate equity stake in cathode-material maker L&F adds an additional asset and earnings variable.
2025 consolidated revenue fell to KRW 164.9bn year over year, operating profit turned negative at roughly -KRW 2.6bn, and the net loss widened to about KRW 32.1bn.
The trailing four quarters (2025Q3-2026Q2) show a positive sum of net income attributable to owners, yet quarterly operating profit swung between gains and losses, indicating limited consistency in core profitability.
Seronics has been known as the largest shareholder of cathode-material maker L&F, a structure through which the equity stake influences non-operating results and asset value.
Total equity has declined every year since 2022, falling to about KRW 94.2bn in 2025, while the debt ratio climbed from the 70% range to about 130%.
In February 2026, the company disposed of 192,005 treasury shares via off-hours block trade to secure operating funds and repay borrowings.
Seronics is an electronic-parts maker headquartered in Gumi, North Gyeongsang Province, operating on two main pillars: an electronics segment producing TV input devices, kitchen TVs and bathroom speakerphones, and a solar segment producing PV ribbon for solar modules.
The electronics segment centers on LCD TV input devices, FFC cables and kitchen TVs, while also handling optical-sheet subcontracting. Key customers reportedly include large domestic electronics and display makers such as LG Electronics and LG Display.
Through subsidiaries, the company also sells electronic-parts injection products and solar-cell parts in Korea and North America.
In terms of governance, founding-family brothers and an affiliate, Kwangsung Electronics, have been listed among Seronics's major shareholders, and the same management team also runs cathode-material maker L&F.
Seronics has been identified as L&F's largest shareholder, creating a structure in which this stake affects the company's asset value and non-operating results.
Some media outlets have recently described Seronics as related to power-conversion devices, though its official business reports still identify electronic parts and solar-parts production and sales as the core business.
As a supplier dependent on finished-goods makers' sales performance and inventory levels, the company is directly exposed to the TV and display end-market cycle.
| Quarter | Revenue | Operating profit | Op. margin |
|---|---|---|---|
| 2025Q2 | ₩39.5B | -₩3.4B | −8.5% |
| 2025Q3 | ₩40B | ₩900M | 2.4% |
| 2025Q4 | ₩34.5B | -₩63,005,722 | −0.2% |
| 2026Q1 | ₩45.4B | -₩600M | −1.3% |
| 2026Q2 | ₩42.7B | -₩4.5B | −10.5% |
| Year | Revenue | Operating profit | Net income (parent) | Op. margin | ROE | Debt-to-equity |
|---|---|---|---|---|---|---|
| 2022 | ₩218.7B | ₩500M | ₩90.1B | 0.2% | 45.3% | 70.4% |
| 2023 | ₩201.7B | ₩400M | -₩28.7B | 0.2% | −16.9% | 84.9% |
| 2024 | ₩202.5B | ₩7.3B | -₩53.9B | 3.6% | −44.2% | 102.6% |
| 2025 | ₩164.9B | -₩2.6B | -₩31.5B | −1.6% | −35.4% | 130.3% |
Consolidated basis (financial statements including subsidiaries) · Final figures from DART filings · Net income attributable to owners of the parent · Data as of 2026-09-04
Consolidated revenue in 2025 came to KRW 164.9bn, down from KRW 202.5bn in 2024; per an Edaily report, revenue of about KRW 164.9bn represented an 18.5% year-over-year decline. Operating profit turned negative at about -KRW 2.6bn that year, and the net loss widened to about KRW 32.1bn, an expansion of 39.4%.
Looking at the multi-year trend, revenue moved from KRW 218.7bn (2022) to KRW 201.7bn (2023), KRW 202.5bn (2024) and KRW 164.9bn (2025), broadly contracting, while the operating margin improved from 0.2% in 2022-2023 to 3.6% in 2024 before deteriorating again to -1.6% in 2025.
Net income attributable to owners was a large positive KRW 90.1bn only in 2022, followed by three consecutive years of losses: -KRW 28.7bn (2023), -KRW 53.9bn (2024) and -KRW 31.5bn (2025), suggesting that swings in non-operating items far larger than operating profit or loss have driven bottom-line results.
On a quarterly basis, 2025Q2 showed revenue of KRW 39.5bn with an operating loss of KRW 3.4bn and a net loss of KRW 21.6bn, while 2025Q3 saw revenue of KRW 40.0bn and a return to operating profit of KRW 0.9bn, yet still posted a net loss of KRW 12.8bn; 2025Q4 narrowed the operating loss to about KRW 0.06bn while net income turned positive at KRW 19.9bn.
This pattern continued into 2026, with 1Q26 revenue of KRW 45.4bn, an operating loss of KRW 0.6bn and a net loss of KRW 2.7bn, and 2Q26 revenue of KRW 42.7bn, an operating loss of KRW 4.5bn alongside net income of KRW 14.1bn — periods in which operating losses and net profit coexisted repeatedly.
This sizable gap between operating results and net income suggests non-operating items outside the core business (potentially including equity-method gains tied to affiliates) materially affect reported earnings.
Total equity fell from KRW 204.4bn in 2022 to KRW 94.2bn in 2025 on cumulative losses, while the debt ratio rose from 70.4% to 130.3% over the same period, increasing financial leverage.
Seronics's electronics segment is directly exposed to the LCD TV market cycle, with finished-goods makers' sales performance and inventory levels acting as the key swing factors for revenue.
A technical analysis report published in 2021 projected the global display market would grow from USD 114.5bn in 2018 to USD 117.5bn by 2025 at a compound annual rate of 2.62%, suggesting a mature industry with a gradual growth trajectory.
Intensifying low-cost competition from Chinese and other later-entrant makers has made cost competitiveness and stable customer relationships key competitive factors.
The solar segment is a niche business focused specifically on PV ribbon, smaller in scale than large solar cell and module makers and different in character from major domestic conglomerates' solar businesses such as Hanwha Solutions.
Meanwhile, L&F, of which Seronics has been the largest shareholder, has been classified among Korea's top-tier cathode-material producers by capacity, an industry with a separate cycle tied to EV and ESS demand.
As a result, Seronics can be viewed as carrying dual, heterogeneous industry exposure: a mature electronic-parts and display business on one hand, and a differently cyclical battery-materials business through its equity stake on the other.
Publicly available search materials did not confirm specific revenue or profit guidance, or new capacity or order schedules, from Seronics management.
However, the treasury-share disposal resolved by the board in February 2026 explicitly cited operating-fund procurement and repayment of financial-institution borrowings as its purpose, indicating the company is actively managing financial leverage.
The return to net profit over the trailing four quarters is a positive development, but this profit is likely to have stemmed more from non-operating items than from core-business improvement, meaning the sustainability of future results depends on whether operating profit or loss itself improves.
The solar PV-ribbon segment is known to have built technical capability partly through a technology alliance with Sankometal, but no recent order or capacity-expansion disclosures were confirmed in the search materials.
The electronics segment remains structured around heavy dependence on a small number of large customers such as LG Electronics, meaning changes in those customers' production and inventory policies are likely to directly affect results.
Regarding the L&F stake, that company's earnings and share-price trends are expected to continue influencing Seronics's non-operating results and asset value, though this remains a variable separate from Seronics's own business performance.
Seronics's share price appears to trade at a level reflecting a certain premium over net asset value, a point that contrasts somewhat with the company's recent low or negative core operating margin.
As net income returned to positive over the trailing four quarters, profit-based valuation metrics that were difficult to compute during the years of sustained annual net losses have become calculable again, a notable feature of the current period.
However, given that this net-income improvement may stem substantially from non-operating items, interpreting profit-based metrics likely requires cross-checking against the core operating-margin trend.
On dividends, no payout has been confirmed in recent years, making shareholder-return policy comparatively conservative relative to peers that do pay dividends.
Overall, Seronics's valuation reflects two intertwined variables — the core business's earnings trajectory and the value of its L&F stake — and interpretation requires caution when these two variables move in different directions.
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 2026-09-04
Seronics has been identified as the largest shareholder of cathode-material maker L&F, and media reports have repeatedly noted that Seronics's stake value drew market attention whenever L&F's share price rallied sharply.
This is a factor that can affect the company's asset value independent of core business results, though the realization and timing of this value depend on L&F's business performance and market conditions.
The sum of net income attributable to owners was positive from 2025Q3 through 2026Q2, with 2025Q4 and 2026Q2 in particular showing positive net income despite operating losses.
This shows non-operating factors have recently turned favorable, though the persistence of this profit heavily depends on the future direction of those non-operating items.
Operating cash flow (CFO) remained positive every year from 2022 through 2025, including years with net losses, suggesting that a meaningful portion of the accounting losses may stem from non-cash items. Maintained cash generation is a relevant reference point for financial flexibility.
Consolidated revenue fell from KRW 218.7bn in 2022 to KRW 164.9bn in 2025, while the operating margin declined from 0.2% to -1.6% over the same period.
Belonging to the mature LCD TV parts industry and facing ongoing low-cost competition from Chinese and other later entrants makes a revenue recovery structurally challenging. The solar segment is also a niche business concentrated on a specific material, PV ribbon, which limits its scale.
Total equity contracted for three consecutive years, from KRW 204.4bn in 2022 to KRW 94.2bn in 2025, reflecting the cumulative impact of successive net losses. Over the same period, the debt ratio rose sharply from 70.4% to 130.3%, increasing the financial leverage burden. Continued equity erosion could necessitate further balance-sheet remediation measures.
The recent return to net profit may owe more to non-operating items than to improvement in operating results, warranting caution regarding earnings quality. Operating profit or loss itself has still frequently recorded losses on a quarterly basis, meaning a recovery in core profitability has not been confirmed.
If non-operating items move in the opposite direction going forward, the recent net-profit trend could reverse again.
A portion of Seronics's asset value and non-operating results is reportedly linked to its L&F stake. If L&F's battery-materials business performance or share price weakens, related losses could transfer negatively to Seronics's own results and asset value. This is an external variable outside Seronics's own business control.
The electronics segment is exposed to a maturing LCD TV market and heavy dependence on a small number of large customers, so revenue and margin pressure could persist from customers' production-policy changes or intensifying price competition with later entrants such as Chinese makers.
The solar segment, focused on a specific material niche, is also exposed to substitute technologies and raw-material price volatility.
Amid shrinking equity and a debt ratio that has risen to roughly 130% from successive net losses, the company disposed of treasury shares in February 2026 to secure operating funds and repay borrowings.
While this is a balance-sheet remediation measure, it also signals that the company has been making considerable efforts to secure funding. The possibility of needing additional capital raising cannot be ruled out if losses continue to accumulate.
Seronics's Q3 2026 results disclosure should be checked to see whether operating profit stabilizes into positive territory and whether the recent net-profit trend continues.
A point to examine how L&F's earnings and share-price trends affect Seronics's non-operating results and asset value.
Watch for additional disclosures related to balance-sheet remediation, such as further treasury-share disposals or progress on debt repayment.
A point to check whether dividend policy changes for fiscal year 2026 and to confirm finalized financial statements.
Seronics combines a mature core business in LCD TV parts and solar parts with a separate asset and earnings variable stemming from its stake in cathode-material maker L&F.
The 2025 annual results show a difficult year marked by declining revenue, a swing to operating loss, and a widened net loss, alongside shrinking equity and a rising debt ratio.
However, on a trailing four-quarter basis, net income has turned positive, likely driven more by non-operating items than by improvement in operating results itself, warranting careful interpretation.
The February 2026 treasury-share disposal signals the company is pursuing balance-sheet remediation while also suggesting a need to secure funding. The L&F stake value is an important pillar of Seronics's valuation, but it should be considered a variable that moves independently of Seronics's own business performance.
Overall, this is a stock where both the structural improvement of the core business and the direction of affiliate-related non-operating items warrant continued monitoring.
Report written 2026-09-05 · Data as of 2026-09-04
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