SL (005850)

SL Corporation (005850) is a Korean automotive parts maker focused on vehicle lighting, supplying headlamps and rear lamps mainly to Hyundai and Kia. As lamp modules add cameras and sensors, SL is extending into ADAS-adjacent sensing, the perception layer of the Hyundai robotics value chain. In Q1 2026 it reported revenue of ₩1.39 trillion, up 12.5%.

Ticker005850
ExchangeKOSPI
SectorConsumer Discretionary · Auto Parts (Lighting & Sensing)
CountrySouth Korea
Last updated2026-06-08
Financial snapshotas of2026-06-08

Next event:Next report · H1 2026 반기보고서 (semi-annual report), estimated · Estimated from Korea's 45-day semi-annual filing deadline; not company-confirmed. Last report: Q1 2026 분기보고서 filed 2026-05-15. (source)

Latest reported quarter:Q1 2026 (ended Mar 31, 2026) (reported2026-05-15)

SL Corporation posted Q1 2026 consolidated revenue of ₩1.39 trillion, up 12.5% year over year, with operating profit of ₩143.8 billion, up 20.5%, and net profit of ₩135.8 billion, up 30.6%. Profit attributable to owners rose 32.3% to ₩132.2 billion as lighting demand and product mix improved.

Revenue₩1.39T+12.5%YoY · ₩1,388.0B consolidated
Operating profit₩143.8B+20.5%YoY · OP margin ~10.4%
Net profit₩135.8B+30.6%YoY
Net profit (owners)₩132.2B+32.3%YoY

Primary source

Revenue by segment

Automotive lighting & parts (HQ, consolidated)₩1.39T · 100%of revenue+12.5% YoY

Recent & upcoming events

  • · Q1 2026 분기보고서 filed.Consolidated revenue ₩1.39T (+12.5%), operating profit ₩143.8B (+20.5%), net profit ₩135.8B (+30.6%); margins expanded on stronger lighting demand and mix. (source)
  • · FY2025 사업보고서 filed.Full-year 2025 revenue ₩5.24T (+5.4%) and operating profit ₩407B (+3.0%); net profit attributable to owners ₩311B, a softer year before the Q1 2026 reacceleration. (source)

Consolidated totals are from the DART Q1 2026 분기보고서. SL reports as a single automotive-parts (lighting) business, so the segment row equals consolidated revenue; SL has no separate product-line segment disclosure in the API data.

Figures are as of 2026-06-08 and reflect the most recent public filings/IR releases; they are updated after each earnings report.

What does SL Corporation do?

SL Corporation started in 1954 as Samlip Industrial and took the SL name in 2004. It makes vehicle lighting: headlamps, rear lamps, and the related electrification and chassis modules, mirrors, and front-end modules that go with them (SL company outline). The largest customers are Hyundai and Kia, which makes SL one of the group’s core parts suppliers rather than a diversified conglomerate. In Q1 2026 the company reported consolidated revenue of ₩1.39 trillion (DART 분기보고서).

The interesting shift is what a headlamp is becoming. A modern lamp is no longer just a light. It is an optical module that increasingly houses cameras and sensors, and SL is developing headlamp-integrated LiDAR with the sensor startup SOSLAB for self-driving use, with features for sensor durability, longer detection range, and self-cleaning. That moves SL from illumination toward perception, the part of a vehicle that sees and interprets the road.

Why is SL Corporation part of the Hyundai robotics value chain?

The Hyundai robotics value chain runs from the Atlas humanoid down through the parts, software, and logistics that the group’s affiliates supply. SL sits in the sensing layer. A humanoid or a mobile robot has the same first problem a self-driving car has: it has to read its surroundings before it can act. The optics, LED, and camera-and-sensor integration SL builds for automotive lighting is the same family of capability a robot needs to localize and perceive.

SL’s description of its own direction makes the link concrete.

SL is “developing LiDAR products in collaboration with SOSLAB, introducing a product integrated into the headlamp with technology that improves the durability of sensors, extended detection range, and sensor cleaning functions for the era of self-driving.”

— SL Corporation, company overview

That perception work is automotive today, but it is the kind of sensing the group’s robots will lean on as physical AI moves from cars to machines that walk and carry.

What did SL Corporation report most recently?

In Q1 2026 (the quarter ended March 31, 2026), SL posted consolidated revenue of ₩1.39 trillion, up 12.5% year over year, operating profit of ₩143.8 billion, up 20.5%, and net profit of ₩135.8 billion, up 30.6%, with profit attributable to owners up 32.3% to ₩132.2 billion (DART 분기보고서). Operating margin widened to about 10.4% as lighting demand and product mix improved, a clean reacceleration off a softer 2025.

For the full year 2025, SL reported revenue of ₩5.24 trillion, up 5.4%, operating profit of ₩407 billion, up 3.0%, and net profit attributable to owners of ₩311 billion (DART 사업보고서), a slower year that set up the sharp Q1 2026 step-up.

What are the risks for SL Corporation?

  • Customer concentration. SL leans heavily on Hyundai and Kia volumes, so its earnings track the group’s vehicle production and model cycle.
  • Auto cyclicality. Lighting demand follows the car market, which moves with the economy, incentives, and the EV transition.
  • Sensing is early. The LiDAR and ADAS sensing push is promising but small next to the core lamp business, so the robotics-perception angle is an option, not today’s profit.
  • Competition and pricing. Automotive lighting is competitive globally, and lamp suppliers face constant pressure on price and on keeping pace with LED and sensor integration.

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Frequently asked questions about SL Corporation

What does SL Corporation do?

SL Corporation, founded in 1954 as Samlip Industrial and renamed in 2004, is a Korean automotive parts maker specializing in vehicle lighting: headlamps, rear lamps, and related electrification and chassis modules. Its largest customers are Hyundai and Kia. In Q1 2026 it reported consolidated revenue of ₩1.39 trillion (DART 분기보고서). SL is also moving into sensing, developing LiDAR integrated into the headlamp with partner SOSLAB for self-driving applications.

Why is SL Corporation part of the Hyundai robotics value chain?

SL is a long-time Hyundai-Kia lighting supplier whose work is drifting from pure illumination toward perception. Modern lamp modules increasingly carry cameras and sensors, and SL is developing headlamp-integrated LiDAR for advanced driver assistance. That optics-and-perception capability overlaps with the vision a mobile or humanoid robot needs to read its surroundings, which is why SL sits in the sensing layer of the Hyundai robotics value chain.

What was SL Corporation's latest quarterly revenue?

SL Corporation reported Q1 2026 consolidated revenue of ₩1.39 trillion (the quarter ended March 31, 2026), up 12.5% year over year, with operating profit of ₩143.8 billion (+20.5%) and net profit of ₩135.8 billion (+30.6%). Profit attributable to owners rose 32.3% to ₩132.2 billion (DART 분기보고서).

When does SL Corporation next report earnings?

Korean issuers do not pre-announce earnings dates. SL's next regulatory filing is the H1 2026 반기보고서 (semi-annual report), due around August 14, 2026 under Korea's 45-day semi-annual deadline. That date is estimated, not company-confirmed. SL last filed its Q1 2026 분기보고서 on May 15, 2026 (DART).

Sources & references

  1. 에스엘 분기보고서 (2026.03) · Q1 2026 quarterly report · SL Corporation / DART (FSS), 2026-05-15
  2. 에스엘 사업보고서 (2025.12) · FY2025 annual report · SL Corporation / DART (FSS), 2026-03-18
  3. Company Outline — SL corporation (headlamps, electrification modules, mirrors, FEM) · SL Corporation, 2026-01-01
  4. Hyundai Motor Group Announces AI Robotics Strategy to Lead Human-Centered Robotics Era at CES 2026 · Hyundai Motor Group, 2026-01-05